REVYOS: HACK: xe: force DG1/DG2/ATS/PVC use xe driver

Signed-off-by: Han Gao <rabenda.cn@gmail.com>

.mailmap

@@ -305,6 +305,10 @@ Henrik Rydberg <rydberg@bitmath.org>
 Herbert Xu <herbert@gondor.apana.org.au>
 Huacai Chen <chenhuacai@kernel.org> <chenhc@lemote.com>
 Huacai Chen <chenhuacai@kernel.org> <chenhuacai@loongson.cn>
+Icenowy Zheng <uwu@icenowy.me> <zhengxingda@iscas.ac.cn>
+Icenowy Zheng <uwu@icenowy.me> <icenowy@aosc.io>
+Icenowy Zheng <uwu@icenowy.me> <icenowy@aosc.xyz>
+Icenowy Zheng <uwu@icenowy.me> <icenowy@sipeed.com>
 Ike Panhc <ikepanhc@gmail.com> <ike.pan@canonical.com>
 J. Bruce Fields <bfields@fieldses.org> <bfields@redhat.com>
 J. Bruce Fields <bfields@fieldses.org> <bfields@citi.umich.edu>

Documentation/devicetree/bindings/display/bridge/thead,th1520-dw-hdmi.yaml

@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/thead,th1520-dw-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-Head TH1520 DesignWare HDMI TX Encoder
+
+maintainers:
+  - Icenowy Zheng <uwu@icenowy.me>
+
+description:
+  The HDMI transmitter is a Synopsys DesignWare HDMI TX controller
+  paired with a DesignWare HDMI Gen2 TX PHY.
+
+allOf:
+  - $ref: /schemas/display/bridge/synopsys,dw-hdmi.yaml#
+
+properties:
+  compatible:
+    enum:
+      - thead,th1520-dw-hdmi
+
+  reg-io-width:
+    const: 4
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: iahb
+      - const: isfr
+      - const: cec
+      - const: pix
+
+  resets:
+    items:
+      - description: Main reset
+      - description: Configuration APB reset
+
+  reset-names:
+    items:
+      - const: main
+      - const: apb
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Input port connected to DC8200 DPU "DP" output
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: HDMI output port
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - reg-io-width
+  - clocks
+  - clock-names
+  - resets
+  - reset-names
+  - interrupts
+  - ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
+    #include <dt-bindings/reset/thead,th1520-reset.h>
+
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      hdmi@ffef540000 {
+        compatible = "thead,th1520-dw-hdmi";
+        reg = <0xff 0xef540000 0x0 0x40000>;
+        reg-io-width = <4>;
+        interrupts = <111 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk_vo CLK_HDMI_PCLK>,
+                 <&clk_vo CLK_HDMI_SFR>,
+                 <&clk_vo CLK_HDMI_CEC>,
+                 <&clk_vo CLK_HDMI_PIXCLK>;
+        clock-names = "iahb", "isfr", "cec", "pix";
+        resets = <&rst_vo TH1520_RESET_ID_HDMI>,
+                 <&rst_vo TH1520_RESET_ID_HDMI_APB>;
+        reset-names = "main", "apb";
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+          port@0 {
+            reg = <0>;
+
+            hdmi_in: endpoint {
+              remote-endpoint = <&dpu_out_dp1>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+
+            hdmi_out_conn: endpoint {
+              remote-endpoint = <&hdmi_conn_in>;
+            };
+          };
+        };
+      };
+    };

Documentation/devicetree/bindings/display/msm/gmu.yaml

@@ -124,6 +124,40 @@ allOf:
           contains:
             enum:
               - qcom,adreno-gmu-623.0
+    then:
+      properties:
+        reg:
+          items:
+            - description: Core GMU registers
+            - description: Resource controller registers
+            - description: GMU PDC registers
+        reg-names:
+          items:
+            - const: gmu
+            - const: rscc
+            - const: gmu_pdc
+        clocks:
+          items:
+            - description: GMU clock
+            - description: GPU CX clock
+            - description: GPU AXI clock
+            - description: GPU MEMNOC clock
+            - description: GPU AHB clock
+            - description: GPU HUB CX clock
+        clock-names:
+          items:
+            - const: gmu
+            - const: cxo
+            - const: axi
+            - const: memnoc
+            - const: ahb
+            - const: hub
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
               - qcom,adreno-gmu-635.0
               - qcom,adreno-gmu-660.1
               - qcom,adreno-gmu-663.0

Documentation/devicetree/bindings/display/verisilicon,dc.yaml

@@ -0,0 +1,146 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/verisilicon,dc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Verisilicon DC-series display controllers
+
+maintainers:
+  - Icenowy Zheng <uwu@icenowy.me>
+
+properties:
+  $nodename:
+    pattern: "^display@[0-9a-f]+$"
+
+  compatible:
+    items:
+      - enum:
+          - thead,th1520-dc8200
+      - const: verisilicon,dc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 4
+    items:
+      - description: DC Core clock
+      - description: DMA AXI bus clock
+      - description: Configuration AHB bus clock
+      - description: Pixel clock of output 0
+      - description: Pixel clock of output 1
+
+  clock-names:
+    minItems: 4
+    items:
+      - const: core
+      - const: axi
+      - const: ahb
+      - const: pix0
+      - const: pix1
+
+  resets:
+    items:
+      - description: DC Core reset
+      - description: DMA AXI bus reset
+      - description: Configuration AHB bus reset
+
+  reset-names:
+    items:
+      - const: core
+      - const: axi
+      - const: ahb
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: The first output channel , endpoint 0 should be
+          used for DPI format output and endpoint 1 should be used
+          for DP format output.
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: The second output channel if the DC variant
+          supports. Follow the same endpoint addressing rule with
+          the first port.
+
+    required:
+      - port@0
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - ports
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: thead,th1520-dc8200
+    then:
+      properties:
+        clocks:
+          minItems: 5
+        ports:
+          required:
+            - port@0
+            - port@1
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
+    #include <dt-bindings/reset/thead,th1520-reset.h>
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+
+      display@ffef600000 {
+        compatible = "thead,th1520-dc8200", "verisilicon,dc";
+        reg = <0xff 0xef600000 0x0 0x100000>;
+        interrupts = <93 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clk_vo CLK_DPU_CCLK>,
+                 <&clk_vo CLK_DPU_ACLK>,
+                 <&clk_vo CLK_DPU_HCLK>,
+                 <&clk_vo CLK_DPU_PIXELCLK0>,
+                 <&clk_vo CLK_DPU_PIXELCLK1>;
+        clock-names = "core", "axi", "ahb", "pix0", "pix1";
+        resets = <&rst TH1520_RESET_ID_DPU_CORE>,
+                 <&rst TH1520_RESET_ID_DPU_AXI>,
+                 <&rst TH1520_RESET_ID_DPU_AHB>;
+        reset-names = "core", "axi", "ahb";
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+          };
+
+          port@1 {
+            reg = <1>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            dpu_out_dp1: endpoint@1 {
+              reg = <1>;
+              remote-endpoint = <&hdmi_in>;
+            };
+          };
+        };
+      };
+    };

Documentation/devicetree/bindings/eeprom/at25.yaml

@@ -56,6 +56,7 @@ properties:
     $ref: /schemas/types.yaml#/definitions/uint32
     description:
       Total eeprom size in bytes.
+      Also used for FRAMs without device ID where the size cannot be detected.
 
   address-width:
     $ref: /schemas/types.yaml#/definitions/uint32
@@ -146,4 +147,11 @@ examples:
             reg = <1>;
             spi-max-frequency = <40000000>;
         };
+
+        fram@2 {
+            compatible = "cypress,fm25", "atmel,at25";
+            reg = <2>;
+            spi-max-frequency = <20000000>;
+            size = <2048>;
+        };
     };

Documentation/devicetree/bindings/net/sophgo,sg2044-dwmac.yaml

@@ -70,6 +70,25 @@ required:
 
 allOf:
   - $ref: snps,dwmac.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: sophgo,sg2042-dwmac
+    then:
+      properties:
+        phy-mode:
+          enum:
+            - rgmii-rxid
+            - rgmii-id
+    else:
+      properties:
+        phy-mode:
+          enum:
+            - rgmii
+            - rgmii-rxid
+            - rgmii-txid
+            - rgmii-id
 
 unevaluatedProperties: false
 

Documentation/devicetree/bindings/nvmem/sophgo,efuse.yaml

@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/nvmem/sophgo,efuse.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SoC eFuse-based NVMEM
+
+description:
+  Sophgo SoCs contain factory-programmed eFuses used to store ROM patch,
+  public key and other factory information.
+
+maintainers:
+  - Inochi Amaoto <inochiama@gmail.com>
+
+allOf:
+  - $ref: nvmem.yaml#
+
+properties:
+  compatible:
+    enum:
+      - sophgo,sg2044-efuse
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    items:
+      - description: Core clock
+      - description: APB clock
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: core
+      - const: apb
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    efuse@40000000 {
+        compatible = "sophgo,sg2044-efuse";
+        reg = <0x40000000 0x1000>;
+        #address-cells = <1>;
+        #size-cells = <1>;
+        clocks = <&clk 0>,
+                 <&clk 1>;
+        clock-names = "core", "apb";
+    };
+
+...

Documentation/devicetree/bindings/pci/sophgo,sg2042-pcie-host.yaml

@@ -0,0 +1,64 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pci/sophgo,sg2042-pcie-host.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Sophgo SG2042 PCIe Host (Cadence PCIe Wrapper)
+
+description:
+  Sophgo SG2042 PCIe host controller is based on the Cadence PCIe core.
+
+maintainers:
+  - Chen Wang <unicorn_wang@outlook.com>
+
+properties:
+  compatible:
+    const: sophgo,sg2042-pcie-host
+
+  reg:
+    maxItems: 2
+
+  reg-names:
+    items:
+      - const: reg
+      - const: cfg
+
+  vendor-id:
+    const: 0x1f1c
+
+  device-id:
+    const: 0x2042
+
+  msi-parent: true
+
+allOf:
+  - $ref: cdns-pcie-host.yaml#
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pcie@62000000 {
+      compatible = "sophgo,sg2042-pcie-host";
+      device_type = "pci";
+      reg = <0x62000000  0x00800000>,
+            <0x48000000  0x00001000>;
+      reg-names = "reg", "cfg";
+      #address-cells = <3>;
+      #size-cells = <2>;
+      ranges = <0x81000000 0 0x00000000 0xde000000 0 0x00010000>,
+               <0x82000000 0 0xd0400000 0xd0400000 0 0x0d000000>;
+      bus-range = <0x00 0xff>;
+      vendor-id = <0x1f1c>;
+      device-id = <0x2042>;
+      cdns,no-bar-match-nbits = <48>;
+      msi-parent = <&msi>;
+    };

Documentation/devicetree/bindings/pinctrl/toshiba,visconti-pinctrl.yaml

@@ -50,18 +50,20 @@ patternProperties:
       groups:
         description:
           Name of the pin group to use for the functions.
-        $ref: /schemas/types.yaml#/definitions/string
-        enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp,
-               i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp,
-               spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp,
-               spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp,
-               uart0_grp, uart1_grp, uart2_grp, uart3_grp,
-               pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp,
-               pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp,
-               pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp,
-               pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp,
-               pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp,
-               pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp]
+        items:
+          enum: [i2c0_grp, i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp,
+                 i2c5_grp, i2c6_grp, i2c7_grp, i2c8_grp,
+                 spi0_grp, spi0_cs0_grp, spi0_cs1_grp, spi0_cs2_grp,
+                 spi1_grp, spi2_grp, spi3_grp, spi4_grp, spi5_grp, spi6_grp,
+                 uart0_grp, uart1_grp, uart2_grp, uart3_grp,
+                 pwm0_gpio4_grp, pwm0_gpio8_grp, pwm0_gpio12_grp,
+                 pwm0_gpio16_grp, pwm1_gpio5_grp, pwm1_gpio9_grp,
+                 pwm1_gpio13_grp, pwm1_gpio17_grp, pwm2_gpio6_grp,
+                 pwm2_gpio10_grp, pwm2_gpio14_grp, pwm2_gpio18_grp,
+                 pwm3_gpio7_grp, pwm3_gpio11_grp, pwm3_gpio15_grp,
+                 pwm3_gpio19_grp, pcmif_out_grp, pcmif_in_grp]
+        minItems: 1
+        maxItems: 8
 
       drive-strength:
         enum: [2, 4, 6, 8, 16, 24, 32]

Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml

@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/thead,th1520-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-HEAD TH1520 PWM
+
+maintainers:
+  - Jisheng Zhang <jszhang@kernel.org>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    enum:
+      - thead,th1520-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+additionalProperties: false
+
+examples:
+  - |
+
+    pwm@ec01c000 {
+        compatible = "thead,th1520-pwm";
+        reg = <0xec01c000 0x1000>;
+        clocks = <&clk 1>;
+        #pwm-cells = <3>;
+    };

Documentation/devicetree/bindings/usb/thead,th1520-usb.yaml

@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/usb/thead,th1520-usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-HEAD TH1520 DWC3 USB Controller Glue
+
+maintainers:
+  - Jisheng Zhang <jszhang@kernel.org>
+
+properties:
+  compatible:
+    const: thead,th1520-usb
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 4
+
+  clock-names:
+    items:
+      - const: ref
+      - const: bus_early
+      - const: phy
+      - const: suspend
+
+  ranges: true
+
+  '#address-cells':
+    enum: [ 1, 2 ]
+
+  '#size-cells':
+    enum: [ 1, 2 ]
+
+# Required child node:
+
+patternProperties:
+  "^usb@[0-9a-f]+$":
+    $ref: snps,dwc3.yaml#
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - ranges
+
+additionalProperties: false
+
+examples:
+  - |
+
+    usb {
+          compatible = "thead,th1520-usb";
+          reg = <0xec03f000 0x1000>;
+          clocks = <&clk 1>,
+                   <&clk 2>,
+                   <&clk 3>,
+                   <&clk 4>;
+          clock-names = "ref", "bus_early", "phy", "suspend";
+          ranges;
+          #address-cells = <1>;
+          #size-cells = <1>;
+
+          usb@e7040000 {
+                compatible = "snps,dwc3";
+                reg = <0xe7040000 0x10000>;
+                interrupts = <68>;
+                dr_mode = "host";
+          };
+    };

Documentation/devicetree/bindings/vendor-prefixes.yaml

@@ -1704,6 +1704,8 @@ patternProperties:
     description: Variscite Ltd.
   "^vdl,.*":
     description: Van der Laan b.v.
+  "^verisilicon,.*":
+    description: VeriSilicon Microelectronics (Shanghai) Co., Ltd.
   "^vertexcom,.*":
     description: Vertexcom Technologies, Inc.
   "^via,.*":

Documentation/netlink/specs/dpll.yaml

@@ -599,6 +599,8 @@ operations:
         reply: &pin-attrs
           attributes:
             - id
+            - module-name
+            - clock-id
             - board-label
             - panel-label
             - package-label

Documentation/netlink/specs/fou.yaml

@@ -52,7 +52,7 @@ attribute-sets:
         name: local-v6
         type: binary
         checks:
-          min-len: 16
+          exact-len: 16
       -
         name: peer-v4
         type: u32
@@ -60,7 +60,7 @@ attribute-sets:
         name: peer-v6
         type: binary
         checks:
-          min-len: 16
+          exact-len: 16
       -
         name: peer-port
         type: u16

Documentation/wmi/driver-development-guide.rst

@@ -54,6 +54,7 @@ to matching WMI devices using a struct wmi_device_id table:
 ::
 
   static const struct wmi_device_id foo_id_table[] = {
+         /* Only use uppercase letters! */
          { "936DA01F-9ABD-4D9D-80C7-02AF85C822A8", NULL },
          { }
   };

MAINTAINERS

@@ -8391,6 +8391,13 @@ F:	Documentation/devicetree/bindings/display/brcm,bcm2835-*.yaml
 F:	drivers/gpu/drm/vc4/
 F:	include/uapi/drm/vc4_drm.h
 
+DRM DRIVERS FOR VERISILICON DISPLAY CONTROLLER IP
+M:	Icenowy Zheng <zhengxingda@iscas.ac.cn>
+L:	dri-devel@lists.freedesktop.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/verisilicon,dc.yaml
+F:	drivers/gpu/drm/verisilicon/
+
 DRM DRIVERS FOR VIVANTE GPU IP
 M:	Lucas Stach <l.stach@pengutronix.de>
 R:	Russell King <linux+etnaviv@armlinux.org.uk>
@@ -21757,12 +21764,15 @@ F:	Documentation/devicetree/bindings/reset/thead,th1520-reset.yaml
 F:	arch/riscv/boot/dts/thead/
 F:	drivers/clk/thead/clk-th1520-ap.c
 F:	drivers/firmware/thead,th1520-aon.c
+F:	drivers/gpu/drm/bridge/th1520-dw-hdmi.c
 F:	drivers/mailbox/mailbox-th1520.c
 F:	drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c
 F:	drivers/pinctrl/pinctrl-th1520.c
 F:	drivers/pmdomain/thead/
+F:	drivers/power/reset/th1520-aon-reboot.c
 F:	drivers/power/sequencing/pwrseq-thead-gpu.c
 F:	drivers/reset/reset-th1520.c
+F:	drivers/usb/dwc3/dwc3-thead.c
 F:	include/dt-bindings/clock/thead,th1520-clk-ap.h
 F:	include/dt-bindings/power/thead,th1520-power.h
 F:	include/dt-bindings/reset/thead,th1520-reset.h

Makefile

@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 VERSION = 6
 PATCHLEVEL = 17
-SUBLEVEL = 7
+SUBLEVEL = 11
 EXTRAVERSION =
 NAME = Baby Opossum Posse
 

arch/arc/include/asm/bitops.h

@@ -133,6 +133,8 @@ static inline __attribute__ ((const)) int fls(unsigned int x)
  */
 static inline __attribute__ ((const)) unsigned long __fls(unsigned long x)
 {
+	if (__builtin_constant_p(x))
+		return x ? BITS_PER_LONG - 1 - __builtin_clzl(x) : 0;
 	/* FLS insn has exactly same semantics as the API */
 	return	__builtin_arc_fls(x);
 }

arch/arm/boot/dts/broadcom/bcm47189-luxul-xap-1440.dts

@@ -55,8 +55,8 @@
 	mdio {
 		/delete-node/ switch@1e;
 
-		bcm54210e: ethernet-phy@0 {
-			reg = <0>;
+		bcm54210e: ethernet-phy@25 {
+			reg = <25>;
 		};
 	};
 };

arch/arm/boot/dts/nvidia/tegra20-asus-tf101.dts

@@ -502,6 +502,9 @@
 			compatible = "asahi-kasei,ak8974";
 			reg = <0xe>;
 
+			interrupt-parent = <&gpio>;
+			interrupts = <TEGRA_GPIO(N, 5) IRQ_TYPE_EDGE_RISING>;
+
 			avdd-supply = <&vdd_3v3_sys>;
 			dvdd-supply = <&vdd_1v8_sys>;
 
@@ -515,7 +518,7 @@
 			reg = <0x1a>;
 
 			interrupt-parent = <&gpio>;
-			interrupts = <TEGRA_GPIO(X, 1) IRQ_TYPE_EDGE_BOTH>;
+			interrupts = <TEGRA_GPIO(X, 3) IRQ_TYPE_EDGE_BOTH>;
 
 			gpio-controller;
 			#gpio-cells = <2>;

arch/arm/boot/dts/nvidia/tegra30-lg-p880.dts

@@ -108,8 +108,8 @@
 	i2c@7000c400 {
 		touchscreen@20 {
 			rmi4-f11@11 {
-				syna,clip-x-high = <1110>;
-				syna,clip-y-high = <1973>;
+				syna,clip-x-high = <1440>;
+				syna,clip-y-high = <2560>;
 
 				touchscreen-inverted-y;
 			};

arch/arm/boot/dts/nxp/imx/imx51-zii-rdu1.dts

@@ -259,7 +259,7 @@
 	pinctrl-0 = <&pinctrl_audmux>;
 	status = "okay";
 
-	ssi2 {
+	mux-ssi2 {
 		fsl,audmux-port = <1>;
 		fsl,port-config = <
 			(IMX_AUDMUX_V2_PTCR_SYN |
@@ -271,7 +271,7 @@
 		>;
 	};
 
-	aud3 {
+	mux-aud3 {
 		fsl,audmux-port = <2>;
 		fsl,port-config = <
 			IMX_AUDMUX_V2_PTCR_SYN

arch/arm/boot/dts/nxp/imx/imx6ul.dtsi

@@ -339,7 +339,7 @@
 					#sound-dai-cells = <0>;
 					compatible = "fsl,imx6ul-sai", "fsl,imx6sx-sai";
 					reg = <0x02030000 0x4000>;
-					interrupts = <GIC_SPI 24 IRQ_TYPE_LEVEL_HIGH>;
+					interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
 					clocks = <&clks IMX6UL_CLK_SAI3_IPG>,
 						 <&clks IMX6UL_CLK_SAI3>,
 						 <&clks IMX6UL_CLK_DUMMY>, <&clks IMX6UL_CLK_DUMMY>;

arch/arm/boot/dts/nxp/imx/imx6ull-engicam-microgea-rmm.dts

@@ -136,7 +136,7 @@
 		interrupt-parent = <&gpio2>;
 		interrupts = <8 IRQ_TYPE_EDGE_FALLING>;
 		reset-gpios = <&gpio2 14 GPIO_ACTIVE_LOW>;
-		report-rate-hz = <6>;
+		report-rate-hz = <60>;
 		/* settings valid only for Hycon touchscreen */
 		touchscreen-size-x = <1280>;
 		touchscreen-size-y = <800>;

arch/arm/crypto/Kconfig

@@ -4,7 +4,7 @@ menu "Accelerated Cryptographic Algorithms for CPU (arm)"
 
 config CRYPTO_CURVE25519_NEON
 	tristate
-	depends on KERNEL_MODE_NEON
+	depends on KERNEL_MODE_NEON && !CPU_BIG_ENDIAN
 	select CRYPTO_KPP
 	select CRYPTO_LIB_CURVE25519_GENERIC
 	select CRYPTO_ARCH_HAVE_LIB_CURVE25519

arch/arm/mach-at91/pm_suspend.S

@@ -689,6 +689,10 @@ sr_dis_exit:
 	bic	tmp2, tmp2, #AT91_PMC_PLL_UPDT_ID
 	str	tmp2, [pmc, #AT91_PMC_PLL_UPDT]
 
+	/* save acr */
+	ldr	tmp2, [pmc, #AT91_PMC_PLL_ACR]
+	str	tmp2, .saved_acr
+
 	/* save div. */
 	mov	tmp1, #0
 	ldr	tmp2, [pmc, #AT91_PMC_PLL_CTRL0]
@@ -758,7 +762,7 @@ sr_dis_exit:
 	str	tmp1, [pmc, #AT91_PMC_PLL_UPDT]
 
 	/* step 2. */
-	ldr	tmp1, =AT91_PMC_PLL_ACR_DEFAULT_PLLA
+	ldr	tmp1, .saved_acr
 	str	tmp1, [pmc, #AT91_PMC_PLL_ACR]
 
 	/* step 3. */
@@ -1207,6 +1211,8 @@ ENDPROC(at91_pm_suspend_in_sram)
 #endif
 .saved_mckr:
 	.word 0
+.saved_acr:
+	.word 0
 .saved_pllar:
 	.word 0
 .saved_sam9_lpr:

arch/arm64/boot/dts/freescale/imx8-ss-img.dtsi

@@ -67,7 +67,6 @@ img_subsys: bus@58000000 {
 		power-domains = <&pd IMX_SC_R_CSI_0>;
 		fsl,channel = <0>;
 		fsl,num-irqs = <32>;
-		status = "disabled";
 	};
 
 	gpio0_mipi_csi0: gpio@58222000 {
@@ -144,7 +143,6 @@ img_subsys: bus@58000000 {
 		power-domains = <&pd IMX_SC_R_CSI_1>;
 		fsl,channel = <0>;
 		fsl,num-irqs = <32>;
-		status = "disabled";
 	};
 
 	gpio0_mipi_csi1: gpio@58242000 {

arch/arm64/boot/dts/freescale/imx8dxl-ss-conn.dtsi

@@ -27,8 +27,8 @@
 		compatible = "nxp,imx8dxl-dwmac-eqos", "snps,dwmac-5.10a";
 		reg = <0x5b050000 0x10000>;
 		interrupt-parent = <&gic>;
-		interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
-			     <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>;
+		interrupts = <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
+			     <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-names = "macirq", "eth_wake_irq";
 		clocks = <&eqos_lpcg IMX_LPCG_CLK_4>,
 			 <&eqos_lpcg IMX_LPCG_CLK_6>,

arch/arm64/boot/dts/freescale/imx8dxl-ss-hsio.dtsi

@@ -54,3 +54,8 @@
 		interrupt-names = "dma";
 	};
 };
+
+&pcieb_ep {
+	interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
+	interrupt-names = "dma";
+};

arch/arm64/boot/dts/freescale/imx8mp-kontron-bl-osm-s.dts

@@ -16,11 +16,20 @@
 		ethernet1 = &eqos;
 	};
 
-	extcon_usbc: usbc {
-		compatible = "linux,extcon-usb-gpio";
+	connector {
+		compatible = "gpio-usb-b-connector", "usb-b-connector";
+		id-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+		label = "Type-C";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_usb1_id>;
-		id-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
+		type = "micro";
+		vbus-supply = <&reg_usb1_vbus>;
+
+		port {
+			usb_dr_connector: endpoint {
+				remote-endpoint = <&usb3_dwc>;
+			};
+		};
 	};
 
 	leds {
@@ -230,9 +239,15 @@
 	hnp-disable;
 	srp-disable;
 	dr_mode = "otg";
-	extcon = <&extcon_usbc>;
 	usb-role-switch;
+	role-switch-default-mode = "peripheral";
 	status = "okay";
+
+	port {
+		usb3_dwc: endpoint {
+			remote-endpoint = <&usb_dr_connector>;
+		};
+	};
 };
 
 &usb_dwc3_1 {
@@ -261,7 +276,6 @@
 };
 
 &usb3_phy0 {
-	vbus-supply = <&reg_usb1_vbus>;
 	status = "okay";
 };
 

arch/arm64/boot/dts/freescale/imx8qm-mek.dts

@@ -217,8 +217,8 @@
 		compatible = "nxp,cbdtu02043", "gpio-sbu-mux";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_typec_mux>;
-		select-gpios = <&lsio_gpio4 6 GPIO_ACTIVE_LOW>;
-		enable-gpios = <&lsio_gpio4 19 GPIO_ACTIVE_HIGH>;
+		select-gpios = <&lsio_gpio4 6 GPIO_ACTIVE_HIGH>;
+		enable-gpios = <&lsio_gpio4 19 GPIO_ACTIVE_LOW>;
 		orientation-switch;
 
 		port {

arch/arm64/boot/dts/rockchip/rk3399-op1.dtsi

@@ -3,7 +3,7 @@
  * Copyright (c) 2016-2017 Fuzhou Rockchip Electronics Co., Ltd
  */
 
-#include "rk3399.dtsi"
+#include "rk3399-base.dtsi"
 
 / {
 	cluster0_opp: opp-table-0 {

arch/arm64/boot/dts/rockchip/rk3566-bigtreetech-cb2.dtsi

@@ -120,7 +120,7 @@
 		compatible = "regulator-fixed";
 		regulator-name = "vcc3v3_pcie";
 		enable-active-high;
-		gpios = <&gpio0 RK_PB1 GPIO_ACTIVE_HIGH>;
+		gpios = <&gpio4 RK_PB1 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pcie_drv>;
 		regulator-always-on;
@@ -187,7 +187,7 @@
 	vcc5v0_usb2b: regulator-vcc5v0-usb2b {
 		compatible = "regulator-fixed";
 		enable-active-high;
-		gpio = <&gpio0 RK_PC4 GPIO_ACTIVE_HIGH>;
+		gpio = <&gpio4 RK_PC4 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&vcc5v0_usb2b_en>;
 		regulator-name = "vcc5v0_usb2b";
@@ -199,7 +199,7 @@
 	vcc5v0_usb2t: regulator-vcc5v0-usb2t {
 		compatible = "regulator-fixed";
 		enable-active-high;
-		gpios = <&gpio0 RK_PD5 GPIO_ACTIVE_HIGH>;
+		gpios = <&gpio3 RK_PD5 GPIO_ACTIVE_HIGH>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&vcc5v0_usb2t_en>;
 		regulator-name = "vcc5v0_usb2t";

arch/arm64/boot/dts/rockchip/rk3566-pinetab2.dtsi

@@ -789,7 +789,7 @@
 	vccio1-supply = <&vccio_acodec>;
 	vccio2-supply = <&vcc_1v8>;
 	vccio3-supply = <&vccio_sd>;
-	vccio4-supply = <&vcc_1v8>;
+	vccio4-supply = <&vcca1v8_pmu>;
 	vccio5-supply = <&vcc_1v8>;
 	vccio6-supply = <&vcc1v8_dvp>;
 	vccio7-supply = <&vcc_3v3>;

arch/arm64/boot/dts/rockchip/rk3568-odroid-m1.dts

@@ -482,6 +482,8 @@
 };
 
 &i2s1_8ch {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s1m0_sclktx &i2s1m0_lrcktx &i2s1m0_sdi0 &i2s1m0_sdo0>;
 	rockchip,trcm-sync-tx-only;
 	status = "okay";
 };

arch/arm64/boot/dts/rockchip/rk3576.dtsi

@@ -269,12 +269,6 @@
 			opp-microvolt = <900000 900000 950000>;
 			clock-latency-ns = <40000>;
 		};
-
-		opp-2208000000 {
-			opp-hz = /bits/ 64 <2208000000>;
-			opp-microvolt = <950000 950000 950000>;
-			clock-latency-ns = <40000>;
-		};
 	};
 
 	cluster1_opp_table: opp-table-cluster1 {
@@ -341,12 +335,6 @@
 			opp-microvolt = <925000 925000 950000>;
 			clock-latency-ns = <40000>;
 		};
-
-		opp-2304000000 {
-			opp-hz = /bits/ 64 <2304000000>;
-			opp-microvolt = <950000 950000 950000>;
-			clock-latency-ns = <40000>;
-		};
 	};
 
 	gpu_opp_table: opp-table-gpu {
@@ -2311,8 +2299,6 @@
 			interrupts = <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
 			pinctrl-names = "default";
 			pinctrl-0 = <&i2c9m0_xfer>;
-			resets = <&cru SRST_I2C9>, <&cru SRST_P_I2C9>;
-			reset-names = "i2c", "apb";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";

arch/arm64/boot/dts/rockchip/rk3588-opp.dtsi

@@ -115,7 +115,7 @@
 		};
 	};
 
-	gpu_opp_table: opp-table {
+	gpu_opp_table: opp-table-gpu {
 		compatible = "operating-points-v2";
 
 		opp-300000000 {

arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi

@@ -382,14 +382,12 @@
 	cap-mmc-highspeed;
 	mmc-ddr-1_8v;
 	mmc-hs200-1_8v;
-	mmc-hs400-1_8v;
-	mmc-hs400-enhanced-strobe;
 	mmc-pwrseq = <&emmc_pwrseq>;
 	no-sdio;
 	no-sd;
 	non-removable;
 	pinctrl-names = "default";
-	pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk &emmc_data_strobe>;
+	pinctrl-0 = <&emmc_bus8 &emmc_cmd &emmc_clk>;
 	vmmc-supply = <&vcc_3v3_s3>;
 	vqmmc-supply = <&vcc_1v8_s3>;
 	status = "okay";

arch/arm64/boot/dts/rockchip/rk3588j.dtsi

@@ -66,7 +66,7 @@
 		};
 	};
 
-	gpu_opp_table: opp-table {
+	gpu_opp_table: opp-table-gpu {
 		compatible = "operating-points-v2";
 
 		opp-300000000 {

arch/arm64/boot/dts/rockchip/rk3588s-orangepi-5.dts

@@ -14,8 +14,8 @@
 		gpios = <&gpio0 RK_PC5 GPIO_ACTIVE_HIGH>;
 		regulator-name = "vcc3v3_pcie20";
 		regulator-boot-on;
-		regulator-min-microvolt = <1800000>;
-		regulator-max-microvolt = <1800000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
 		startup-delay-us = <50000>;
 		vin-supply = <&vcc5v0_sys>;
 	};

arch/arm64/boot/dts/xilinx/versal-net.dtsi

@@ -556,7 +556,7 @@
 			reg = <0 0xf12a0000 0 0x100>;
 			interrupts = <0 200 4>, <0 201 4>;
 			interrupt-names = "alarm", "sec";
-			calibration = <0x8000>;
+			calibration = <0x7FFF>;
 		};
 
 		sdhci0: mmc@f1040000 {

arch/arm64/boot/dts/xilinx/zynqmp-zcu106-revA.dts

@@ -808,8 +808,8 @@
 			pins = "MIO54", "MIO56", "MIO57", "MIO58", "MIO59",
 			       "MIO60", "MIO61", "MIO62", "MIO63";
 			bias-disable;
-			drive-strength = <4>;
-			slew-rate = <SLEW_RATE_SLOW>;
+			drive-strength = <12>;
+			slew-rate = <SLEW_RATE_FAST>;
 		};
 	};
 

arch/arm64/boot/dts/xilinx/zynqmp.dtsi

@@ -550,6 +550,7 @@
 			reg = <0x0 0xfec10000 0x0 0x1000>;
 			clock-names = "apb_pclk";
 			cpu = <&cpu0>;
+			status = "disabled";
 		};
 
 		cpu1_debug: debug@fed10000 {
@@ -557,6 +558,7 @@
 			reg = <0x0 0xfed10000 0x0 0x1000>;
 			clock-names = "apb_pclk";
 			cpu = <&cpu1>;
+			status = "disabled";
 		};
 
 		cpu2_debug: debug@fee10000 {
@@ -564,6 +566,7 @@
 			reg = <0x0 0xfee10000 0x0 0x1000>;
 			clock-names = "apb_pclk";
 			cpu = <&cpu2>;
+			status = "disabled";
 		};
 
 		cpu3_debug: debug@fef10000 {
@@ -571,6 +574,7 @@
 			reg = <0x0 0xfef10000 0x0 0x1000>;
 			clock-names = "apb_pclk";
 			cpu = <&cpu3>;
+			status = "disabled";
 		};
 
 		/* GDMA */

arch/arm64/kernel/acpi.c

@@ -197,8 +197,6 @@ out:
  */
 void __init acpi_boot_table_init(void)
 {
-	int ret;
-
 	/*
 	 * Enable ACPI instead of device tree unless
 	 * - ACPI has been disabled explicitly (acpi=off), or
@@ -252,12 +250,10 @@ done:
 		 * behaviour, use acpi=nospcr to disable console in ACPI SPCR
 		 * table as default serial console.
 		 */
-		ret = acpi_parse_spcr(earlycon_acpi_spcr_enable,
+		acpi_parse_spcr(earlycon_acpi_spcr_enable,
 			!param_acpi_nospcr);
-		if (!ret || param_acpi_nospcr || !IS_ENABLED(CONFIG_ACPI_SPCR_TABLE))
-			pr_info("Use ACPI SPCR as default console: No\n");
-		else
-			pr_info("Use ACPI SPCR as default console: Yes\n");
+		pr_info("Use ACPI SPCR as default console: %s\n",
+				param_acpi_nospcr ? "No" : "Yes");
 
 		if (IS_ENABLED(CONFIG_ACPI_BGRT))
 			acpi_table_parse(ACPI_SIG_BGRT, acpi_parse_bgrt);

arch/arm64/kernel/probes/kprobes.c

@@ -49,7 +49,10 @@ void *alloc_insn_page(void)
 	addr = execmem_alloc(EXECMEM_KPROBES, PAGE_SIZE);
 	if (!addr)
 		return NULL;
-	set_memory_rox((unsigned long)addr, 1);
+	if (set_memory_rox((unsigned long)addr, 1)) {
+		execmem_free(addr);
+		return NULL;
+	}
 	return addr;
 }
 

arch/arm64/kvm/hyp/nvhe/ffa.c

@@ -437,7 +437,7 @@ static void __do_ffa_mem_xfer(const u64 func_id,
 	struct ffa_mem_region_attributes *ep_mem_access;
 	struct ffa_composite_mem_region *reg;
 	struct ffa_mem_region *buf;
-	u32 offset, nr_ranges;
+	u32 offset, nr_ranges, checked_offset;
 	int ret = 0;
 
 	if (addr_mbz || npages_mbz || fraglen > len ||
@@ -474,7 +474,12 @@ static void __do_ffa_mem_xfer(const u64 func_id,
 		goto out_unlock;
 	}
 
-	if (fraglen < offset + sizeof(struct ffa_composite_mem_region)) {
+	if (check_add_overflow(offset, sizeof(struct ffa_composite_mem_region), &checked_offset)) {
+		ret = FFA_RET_INVALID_PARAMETERS;
+		goto out_unlock;
+	}
+
+	if (fraglen < checked_offset) {
 		ret = FFA_RET_INVALID_PARAMETERS;
 		goto out_unlock;
 	}

arch/arm64/kvm/sys_regs.c

@@ -2515,19 +2515,23 @@ static bool bad_redir_trap(struct kvm_vcpu *vcpu,
 	.val = 0,				\
 }
 
-/* sys_reg_desc initialiser for known cpufeature ID registers */
-#define AA32_ID_SANITISED(name) {		\
-	ID_DESC(name),				\
-	.visibility = aa32_id_visibility,	\
-	.val = 0,				\
-}
-
 /* sys_reg_desc initialiser for writable ID registers */
 #define ID_WRITABLE(name, mask) {		\
 	ID_DESC(name),				\
 	.val = mask,				\
 }
 
+/*
+ * 32bit ID regs are fully writable when the guest is 32bit
+ * capable. Nothing in the KVM code should rely on 32bit features
+ * anyway, only 64bit, so let the VMM do its worse.
+ */
+#define AA32_ID_WRITABLE(name) {		\
+	ID_DESC(name),				\
+	.visibility = aa32_id_visibility,	\
+	.val = GENMASK(31, 0),			\
+}
+
 /* sys_reg_desc initialiser for cpufeature ID registers that need filtering */
 #define ID_FILTERED(sysreg, name, mask) {	\
 	ID_DESC(sysreg),				\
@@ -3039,40 +3043,39 @@ static const struct sys_reg_desc sys_reg_descs[] = {
 
 	/* AArch64 mappings of the AArch32 ID registers */
 	/* CRm=1 */
-	AA32_ID_SANITISED(ID_PFR0_EL1),
-	AA32_ID_SANITISED(ID_PFR1_EL1),
+	AA32_ID_WRITABLE(ID_PFR0_EL1),
+	AA32_ID_WRITABLE(ID_PFR1_EL1),
 	{ SYS_DESC(SYS_ID_DFR0_EL1),
 	  .access = access_id_reg,
 	  .get_user = get_id_reg,
 	  .set_user = set_id_dfr0_el1,
 	  .visibility = aa32_id_visibility,
 	  .reset = read_sanitised_id_dfr0_el1,
-	  .val = ID_DFR0_EL1_PerfMon_MASK |
-		 ID_DFR0_EL1_CopDbg_MASK, },
+	  .val = GENMASK(31, 0) },
 	ID_HIDDEN(ID_AFR0_EL1),
-	AA32_ID_SANITISED(ID_MMFR0_EL1),
-	AA32_ID_SANITISED(ID_MMFR1_EL1),
-	AA32_ID_SANITISED(ID_MMFR2_EL1),
-	AA32_ID_SANITISED(ID_MMFR3_EL1),
+	AA32_ID_WRITABLE(ID_MMFR0_EL1),
+	AA32_ID_WRITABLE(ID_MMFR1_EL1),
+	AA32_ID_WRITABLE(ID_MMFR2_EL1),
+	AA32_ID_WRITABLE(ID_MMFR3_EL1),
 
 	/* CRm=2 */
-	AA32_ID_SANITISED(ID_ISAR0_EL1),
-	AA32_ID_SANITISED(ID_ISAR1_EL1),
-	AA32_ID_SANITISED(ID_ISAR2_EL1),
-	AA32_ID_SANITISED(ID_ISAR3_EL1),
-	AA32_ID_SANITISED(ID_ISAR4_EL1),
-	AA32_ID_SANITISED(ID_ISAR5_EL1),
-	AA32_ID_SANITISED(ID_MMFR4_EL1),
-	AA32_ID_SANITISED(ID_ISAR6_EL1),
+	AA32_ID_WRITABLE(ID_ISAR0_EL1),
+	AA32_ID_WRITABLE(ID_ISAR1_EL1),
+	AA32_ID_WRITABLE(ID_ISAR2_EL1),
+	AA32_ID_WRITABLE(ID_ISAR3_EL1),
+	AA32_ID_WRITABLE(ID_ISAR4_EL1),
+	AA32_ID_WRITABLE(ID_ISAR5_EL1),
+	AA32_ID_WRITABLE(ID_MMFR4_EL1),
+	AA32_ID_WRITABLE(ID_ISAR6_EL1),
 
 	/* CRm=3 */
-	AA32_ID_SANITISED(MVFR0_EL1),
-	AA32_ID_SANITISED(MVFR1_EL1),
-	AA32_ID_SANITISED(MVFR2_EL1),
+	AA32_ID_WRITABLE(MVFR0_EL1),
+	AA32_ID_WRITABLE(MVFR1_EL1),
+	AA32_ID_WRITABLE(MVFR2_EL1),
 	ID_UNALLOCATED(3,3),
-	AA32_ID_SANITISED(ID_PFR2_EL1),
+	AA32_ID_WRITABLE(ID_PFR2_EL1),
 	ID_HIDDEN(ID_DFR1_EL1),
-	AA32_ID_SANITISED(ID_MMFR5_EL1),
+	AA32_ID_WRITABLE(ID_MMFR5_EL1),
 	ID_UNALLOCATED(3,7),
 
 	/* AArch64 ID registers */

arch/loongarch/include/asm/hw_breakpoint.h

@@ -134,13 +134,13 @@ static inline void hw_breakpoint_thread_switch(struct task_struct *next)
 /* Determine number of BRP registers available. */
 static inline int get_num_brps(void)
 {
-	return csr_read64(LOONGARCH_CSR_FWPC) & CSR_FWPC_NUM;
+	return csr_read32(LOONGARCH_CSR_FWPC) & CSR_FWPC_NUM;
 }
 
 /* Determine number of WRP registers available. */
 static inline int get_num_wrps(void)
 {
-	return csr_read64(LOONGARCH_CSR_MWPC) & CSR_MWPC_NUM;
+	return csr_read32(LOONGARCH_CSR_MWPC) & CSR_MWPC_NUM;
 }
 
 #endif	/* __KERNEL__ */

arch/loongarch/include/asm/inst.h

@@ -77,6 +77,10 @@ enum reg2_op {
 	iocsrwrh_op     = 0x19205,
 	iocsrwrw_op     = 0x19206,
 	iocsrwrd_op     = 0x19207,
+	llacqw_op	= 0xe15e0,
+	screlw_op	= 0xe15e1,
+	llacqd_op	= 0xe15e2,
+	screld_op	= 0xe15e3,
 };
 
 enum reg2i5_op {
@@ -189,6 +193,7 @@ enum reg3_op {
 	fldxd_op	= 0x7068,
 	fstxs_op	= 0x7070,
 	fstxd_op	= 0x7078,
+	scq_op		= 0x70ae,
 	amswapw_op	= 0x70c0,
 	amswapd_op	= 0x70c1,
 	amaddw_op	= 0x70c2,

arch/loongarch/include/asm/io.h

@@ -14,7 +14,7 @@
 #include <asm/pgtable-bits.h>
 #include <asm/string.h>
 
-extern void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size);
+extern void __init __iomem *early_ioremap(phys_addr_t phys_addr, unsigned long size);
 extern void __init early_iounmap(void __iomem *addr, unsigned long size);
 
 #define early_memremap early_ioremap
@@ -25,6 +25,9 @@ extern void __init early_iounmap(void __iomem *addr, unsigned long size);
 static inline void __iomem *ioremap_prot(phys_addr_t offset, unsigned long size,
 					 pgprot_t prot)
 {
+	if (offset > TO_PHYS_MASK)
+		return NULL;
+
 	switch (pgprot_val(prot) & _CACHE_MASK) {
 	case _CACHE_CC:
 		return (void __iomem *)(unsigned long)(CACHE_BASE + offset);

arch/loongarch/include/asm/pgtable.h

@@ -424,6 +424,9 @@ static inline unsigned long pte_accessible(struct mm_struct *mm, pte_t a)
 
 static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
 {
+	if (pte_val(pte) & _PAGE_DIRTY)
+		pte_val(pte) |= _PAGE_MODIFIED;
+
 	return __pte((pte_val(pte) & _PAGE_CHG_MASK) |
 		     (pgprot_val(newprot) & ~_PAGE_CHG_MASK));
 }
@@ -547,9 +550,11 @@ static inline struct page *pmd_page(pmd_t pmd)
 
 static inline pmd_t pmd_modify(pmd_t pmd, pgprot_t newprot)
 {
-	pmd_val(pmd) = (pmd_val(pmd) & _HPAGE_CHG_MASK) |
-				(pgprot_val(newprot) & ~_HPAGE_CHG_MASK);
-	return pmd;
+	if (pmd_val(pmd) & _PAGE_DIRTY)
+		pmd_val(pmd) |= _PAGE_MODIFIED;
+
+	return __pmd((pmd_val(pmd) & _HPAGE_CHG_MASK) |
+		     (pgprot_val(newprot) & ~_HPAGE_CHG_MASK));
 }
 
 static inline pmd_t pmd_mkinvalid(pmd_t pmd)

arch/loongarch/include/uapi/asm/ptrace.h

@@ -10,10 +10,6 @@
 
 #include <linux/types.h>
 
-#ifndef __KERNEL__
-#include <stdint.h>
-#endif
-
 /*
  * For PTRACE_{POKE,PEEK}USR. 0 - 31 are GPRs,
  * 32 is syscall's original ARG0, 33 is PC, 34 is BADVADDR.
@@ -41,44 +37,44 @@ struct user_pt_regs {
 } __attribute__((aligned(8)));
 
 struct user_fp_state {
-	uint64_t fpr[32];
-	uint64_t fcc;
-	uint32_t fcsr;
+	__u64 fpr[32];
+	__u64 fcc;
+	__u32 fcsr;
 };
 
 struct user_lsx_state {
 	/* 32 registers, 128 bits width per register. */
-	uint64_t vregs[32*2];
+	__u64 vregs[32*2];
 };
 
 struct user_lasx_state {
 	/* 32 registers, 256 bits width per register. */
-	uint64_t vregs[32*4];
+	__u64 vregs[32*4];
 };
 
 struct user_lbt_state {
-	uint64_t scr[4];
-	uint32_t eflags;
-	uint32_t ftop;
+	__u64 scr[4];
+	__u32 eflags;
+	__u32 ftop;
 };
 
 struct user_watch_state {
-	uint64_t dbg_info;
+	__u64 dbg_info;
 	struct {
-		uint64_t    addr;
-		uint64_t    mask;
-		uint32_t    ctrl;
-		uint32_t    pad;
+		__u64    addr;
+		__u64    mask;
+		__u32    ctrl;
+		__u32    pad;
 	} dbg_regs[8];
 };
 
 struct user_watch_state_v2 {
-	uint64_t dbg_info;
+	__u64 dbg_info;
 	struct {
-		uint64_t    addr;
-		uint64_t    mask;
-		uint32_t    ctrl;
-		uint32_t    pad;
+		__u64    addr;
+		__u64    mask;
+		__u32    ctrl;
+		__u32    pad;
 	} dbg_regs[14];
 };
 

arch/loongarch/kernel/inst.c

@@ -141,6 +141,9 @@ bool insns_not_supported(union loongarch_instruction insn)
 	case amswapw_op ... ammindbdu_op:
 		pr_notice("atomic memory access instructions are not supported\n");
 		return true;
+	case scq_op:
+		pr_notice("sc.q instruction is not supported\n");
+		return true;
 	}
 
 	switch (insn.reg2i14_format.opcode) {
@@ -152,6 +155,15 @@ bool insns_not_supported(union loongarch_instruction insn)
 		return true;
 	}
 
+	switch (insn.reg2_format.opcode) {
+	case llacqw_op:
+	case llacqd_op:
+	case screlw_op:
+	case screld_op:
+		pr_notice("llacq and screl instructions are not supported\n");
+		return true;
+	}
+
 	switch (insn.reg1i21_format.opcode) {
 	case bceqz_op:
 		pr_notice("bceqz and bcnez instructions are not supported\n");

arch/loongarch/kernel/mem.c

@@ -13,7 +13,7 @@
 void __init memblock_init(void)
 {
 	u32 mem_type;
-	u64 mem_start, mem_end, mem_size;
+	u64 mem_start, mem_size;
 	efi_memory_desc_t *md;
 
 	/* Parse memory information */
@@ -21,7 +21,6 @@ void __init memblock_init(void)
 		mem_type = md->type;
 		mem_start = md->phys_addr;
 		mem_size = md->num_pages << EFI_PAGE_SHIFT;
-		mem_end = mem_start + mem_size;
 
 		switch (mem_type) {
 		case EFI_LOADER_CODE:
@@ -31,8 +30,6 @@ void __init memblock_init(void)
 		case EFI_PERSISTENT_MEMORY:
 		case EFI_CONVENTIONAL_MEMORY:
 			memblock_add(mem_start, mem_size);
-			if (max_low_pfn < (mem_end >> PAGE_SHIFT))
-				max_low_pfn = mem_end >> PAGE_SHIFT;
 			break;
 		case EFI_PAL_CODE:
 		case EFI_UNUSABLE_MEMORY:
@@ -49,6 +46,8 @@ void __init memblock_init(void)
 		}
 	}
 
+	max_pfn = PFN_DOWN(memblock_end_of_DRAM());
+	max_low_pfn = min(PFN_DOWN(HIGHMEM_START), max_pfn);
 	memblock_set_current_limit(PFN_PHYS(max_low_pfn));
 
 	/* Reserve the first 2MB */

arch/loongarch/kernel/numa.c

@@ -158,35 +158,9 @@ static void __init node_mem_init(unsigned int node)
 
 #ifdef CONFIG_ACPI_NUMA
 
-/*
- * add_numamem_region
- *
- * Add a uasable memory region described by BIOS. The
- * routine gets each intersection between BIOS's region
- * and node's region, and adds them into node's memblock
- * pool.
- *
- */
-static void __init add_numamem_region(u64 start, u64 end, u32 type)
-{
-	u32 node = pa_to_nid(start);
-	u64 size = end - start;
-	static unsigned long num_physpages;
+static unsigned long num_physpages;
 
-	if (start >= end) {
-		pr_debug("Invalid region: %016llx-%016llx\n", start, end);
-		return;
-	}
-
-	num_physpages += (size >> PAGE_SHIFT);
-	pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
-		node, type, start, size);
-	pr_info("       start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
-		start >> PAGE_SHIFT, end >> PAGE_SHIFT, num_physpages);
-	memblock_set_node(start, size, &memblock.memory, node);
-}
-
-static void __init init_node_memblock(void)
+static void __init info_node_memblock(void)
 {
 	u32 mem_type;
 	u64 mem_end, mem_start, mem_size;
@@ -206,12 +180,20 @@ static void __init init_node_memblock(void)
 		case EFI_BOOT_SERVICES_DATA:
 		case EFI_PERSISTENT_MEMORY:
 		case EFI_CONVENTIONAL_MEMORY:
-			add_numamem_region(mem_start, mem_end, mem_type);
+			num_physpages += (mem_size >> PAGE_SHIFT);
+			pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
+				(u32)pa_to_nid(mem_start), mem_type, mem_start, mem_size);
+			pr_info("       start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
+				mem_start >> PAGE_SHIFT, mem_end >> PAGE_SHIFT, num_physpages);
 			break;
 		case EFI_PAL_CODE:
 		case EFI_UNUSABLE_MEMORY:
 		case EFI_ACPI_RECLAIM_MEMORY:
-			add_numamem_region(mem_start, mem_end, mem_type);
+			num_physpages += (mem_size >> PAGE_SHIFT);
+			pr_info("Node%d: mem_type:%d, mem_start:0x%llx, mem_size:0x%llx Bytes\n",
+				(u32)pa_to_nid(mem_start), mem_type, mem_start, mem_size);
+			pr_info("       start_pfn:0x%llx, end_pfn:0x%llx, num_physpages:0x%lx\n",
+				mem_start >> PAGE_SHIFT, mem_end >> PAGE_SHIFT, num_physpages);
 			fallthrough;
 		case EFI_RESERVED_TYPE:
 		case EFI_RUNTIME_SERVICES_CODE:
@@ -249,22 +231,16 @@ int __init init_numa_memory(void)
 	for (i = 0; i < NR_CPUS; i++)
 		set_cpuid_to_node(i, NUMA_NO_NODE);
 
-	numa_reset_distance();
-	nodes_clear(numa_nodes_parsed);
-	nodes_clear(node_possible_map);
-	nodes_clear(node_online_map);
-	WARN_ON(memblock_clear_hotplug(0, PHYS_ADDR_MAX));
-
 	/* Parse SRAT and SLIT if provided by firmware. */
-	ret = acpi_disabled ? fake_numa_init() : acpi_numa_init();
+	if (!acpi_disabled)
+		ret = numa_memblks_init(acpi_numa_init, false);
+	else
+		ret = numa_memblks_init(fake_numa_init, false);
+
 	if (ret < 0)
 		return ret;
 
-	node_possible_map = numa_nodes_parsed;
-	if (WARN_ON(nodes_empty(node_possible_map)))
-		return -EINVAL;
-
-	init_node_memblock();
+	info_node_memblock();
 	if (!memblock_validate_numa_coverage(SZ_1M))
 		return -EINVAL;
 
@@ -272,7 +248,8 @@ int __init init_numa_memory(void)
 		node_mem_init(node);
 		node_set_online(node);
 	}
-	max_low_pfn = PHYS_PFN(memblock_end_of_DRAM());
+	max_pfn = PFN_DOWN(memblock_end_of_DRAM());
+	max_low_pfn = min(PFN_DOWN(HIGHMEM_START), max_pfn);
 
 	setup_nr_node_ids();
 	loongson_sysconf.nr_nodes = nr_node_ids;
@@ -283,26 +260,6 @@ int __init init_numa_memory(void)
 
 #endif
 
-void __init paging_init(void)
-{
-	unsigned int node;
-	unsigned long zones_size[MAX_NR_ZONES] = {0, };
-
-	for_each_online_node(node) {
-		unsigned long start_pfn, end_pfn;
-
-		get_pfn_range_for_nid(node, &start_pfn, &end_pfn);
-
-		if (end_pfn > max_low_pfn)
-			max_low_pfn = end_pfn;
-	}
-#ifdef CONFIG_ZONE_DMA32
-	zones_size[ZONE_DMA32] = MAX_DMA32_PFN;
-#endif
-	zones_size[ZONE_NORMAL] = max_low_pfn;
-	free_area_init(zones_size);
-}
-
 int pcibus_to_node(struct pci_bus *bus)
 {
 	return dev_to_node(&bus->dev);

arch/loongarch/kernel/setup.c

@@ -294,8 +294,6 @@ static void __init fdt_setup(void)
 
 	early_init_dt_scan(fdt_pointer, __pa(fdt_pointer));
 	early_init_fdt_reserve_self();
-
-	max_low_pfn = PFN_PHYS(memblock_end_of_DRAM());
 #endif
 }
 
@@ -390,7 +388,8 @@ static void __init check_kernel_sections_mem(void)
 static void __init arch_mem_init(char **cmdline_p)
 {
 	/* Recalculate max_low_pfn for "mem=xxx" */
-	max_pfn = max_low_pfn = PHYS_PFN(memblock_end_of_DRAM());
+	max_pfn = PFN_DOWN(memblock_end_of_DRAM());
+	max_low_pfn = min(PFN_DOWN(HIGHMEM_START), max_pfn);
 
 	if (usermem)
 		pr_info("User-defined physical RAM map overwrite\n");

arch/loongarch/kernel/traps.c

@@ -1131,8 +1131,8 @@ static void configure_exception_vector(void)
 	tlbrentry = (unsigned long)exception_handlers + 80*VECSIZE;
 
 	csr_write64(eentry, LOONGARCH_CSR_EENTRY);
-	csr_write64(eentry, LOONGARCH_CSR_MERRENTRY);
-	csr_write64(tlbrentry, LOONGARCH_CSR_TLBRENTRY);
+	csr_write64(__pa(eentry), LOONGARCH_CSR_MERRENTRY);
+	csr_write64(__pa(tlbrentry), LOONGARCH_CSR_TLBRENTRY);
 }
 
 void per_cpu_trap_init(int cpu)

arch/loongarch/kvm/intc/eiointc.c

@@ -439,7 +439,7 @@ static int kvm_eiointc_ctrl_access(struct kvm_device *dev,
 	spin_lock_irqsave(&s->lock, flags);
 	switch (type) {
 	case KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU:
-		if (val >= EIOINTC_ROUTE_MAX_VCPUS)
+		if (val > EIOINTC_ROUTE_MAX_VCPUS)
 			ret = -EINVAL;
 		else
 			s->num_cpu = val;

arch/loongarch/kvm/timer.c

@@ -4,6 +4,7 @@
  */
 
 #include <linux/kvm_host.h>
+#include <asm/delay.h>
 #include <asm/kvm_csr.h>
 #include <asm/kvm_vcpu.h>
 
@@ -95,6 +96,7 @@ void kvm_restore_timer(struct kvm_vcpu *vcpu)
 		 * and set CSR TVAL with -1
 		 */
 		write_gcsr_timertick(0);
+		__delay(2); /* Wait cycles until timer interrupt injected */
 
 		/*
 		 * Writing CSR_TINTCLR_TI to LOONGARCH_CSR_TINTCLR will clear

arch/loongarch/kvm/vcpu.c

@@ -133,6 +133,9 @@ static void kvm_lose_pmu(struct kvm_vcpu *vcpu)
 	 * Clear KVM_LARCH_PMU if the guest is not using PMU CSRs when
 	 * exiting the guest, so that the next time trap into the guest.
 	 * We don't need to deal with PMU CSRs contexts.
+	 *
+	 * Otherwise set the request bit KVM_REQ_PMU to restore guest PMU
+	 * before entering guest VM
 	 */
 	val = kvm_read_sw_gcsr(csr, LOONGARCH_CSR_PERFCTRL0);
 	val |= kvm_read_sw_gcsr(csr, LOONGARCH_CSR_PERFCTRL1);
@@ -140,6 +143,8 @@ static void kvm_lose_pmu(struct kvm_vcpu *vcpu)
 	val |= kvm_read_sw_gcsr(csr, LOONGARCH_CSR_PERFCTRL3);
 	if (!(val & KVM_PMU_EVENT_ENABLED))
 		vcpu->arch.aux_inuse &= ~KVM_LARCH_PMU;
+	else
+		kvm_make_request(KVM_REQ_PMU, vcpu);
 
 	kvm_restore_host_pmu(vcpu);
 }

arch/loongarch/mm/init.c

@@ -60,7 +60,6 @@ int __ref page_is_ram(unsigned long pfn)
 	return memblock_is_memory(addr) && !memblock_is_reserved(addr);
 }
 
-#ifndef CONFIG_NUMA
 void __init paging_init(void)
 {
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
@@ -72,7 +71,6 @@ void __init paging_init(void)
 
 	free_area_init(max_zone_pfns);
 }
-#endif /* !CONFIG_NUMA */
 
 void __ref free_initmem(void)
 {

arch/loongarch/mm/ioremap.c

@@ -6,7 +6,7 @@
 #include <asm/io.h>
 #include <asm-generic/early_ioremap.h>
 
-void __init __iomem *early_ioremap(u64 phys_addr, unsigned long size)
+void __init __iomem *early_ioremap(phys_addr_t phys_addr, unsigned long size)
 {
 	return ((void __iomem *)TO_CACHE(phys_addr));
 }

arch/loongarch/net/bpf_jit.c

@@ -1626,6 +1626,9 @@ static int __arch_prepare_bpf_trampoline(struct jit_ctx *ctx, struct bpf_tramp_i
 	/* Direct jump skips 5 NOP instructions */
 	else if (is_bpf_text_address((unsigned long)orig_call))
 		orig_call += LOONGARCH_BPF_FENTRY_NBYTES;
+	/* Module tracing not supported - cause kernel lockups */
+	else if (is_module_text_address((unsigned long)orig_call))
+		return -ENOTSUPP;
 
 	if (flags & BPF_TRAMP_F_CALL_ORIG) {
 		move_addr(ctx, LOONGARCH_GPR_A0, (const u64)im);

arch/loongarch/pci/pci.c

@@ -50,11 +50,11 @@ static int __init pcibios_init(void)
 	 */
 	lsize = cpu_last_level_cache_line_size();
 
-	BUG_ON(!lsize);
+	if (lsize) {
+		pci_dfl_cache_line_size = lsize >> 2;
 
-	pci_dfl_cache_line_size = lsize >> 2;
-
-	pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize);
+		pr_debug("PCI: pci_cache_line_size set to %d bytes\n", lsize);
+	}
 
 	return 0;
 }

arch/mips/boot/dts/econet/en751221.dtsi

@@ -18,7 +18,7 @@
 
 		cpu@0 {
 			device_type = "cpu";
-			compatible = "mips,mips24KEc";
+			compatible = "mips,mips34Kc";
 			reg = <0>;
 		};
 	};

arch/mips/boot/dts/lantiq/danube.dtsi

@@ -5,8 +5,12 @@
 	compatible = "lantiq,xway", "lantiq,danube";
 
 	cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
 		cpu@0 {
 			compatible = "mips,mips24Kc";
+			reg = <0>;
 		};
 	};
 
@@ -100,6 +104,8 @@
 				  0x1000000 0 0x00000000 0xae00000 0 0x200000>; /* io space */
 			reg = <0x7000000 0x8000		/* config space */
 				0xe105400 0x400>;	/* pci bridge */
+
+			device_type = "pci";
 		};
 	};
 };

arch/mips/boot/dts/lantiq/danube_easy50712.dts

@@ -4,6 +4,8 @@
 /include/ "danube.dtsi"
 
 / {
+	model = "Intel EASY50712";
+
 	chosen {
 		bootargs = "console=ttyLTQ0,115200 init=/etc/preinit";
 	};
@@ -94,7 +96,7 @@
 			lantiq,tx-burst-length = <4>;
 		};
 
-		stp0: stp@e100bb0 {
+		stp0: gpio@e100bb0 {
 			#gpio-cells = <2>;
 			compatible = "lantiq,gpio-stp-xway";
 			gpio-controller;

arch/mips/kernel/process.c

@@ -692,7 +692,7 @@ unsigned long mips_stack_top(void)
 	/* Space for the VDSO, data page & GIC user page */
 	if (current->thread.abi) {
 		top -= PAGE_ALIGN(current->thread.abi->vdso->size);
-		top -= PAGE_SIZE;
+		top -= VDSO_NR_PAGES * PAGE_SIZE;
 		top -= mips_gic_present() ? PAGE_SIZE : 0;
 
 		/* Space to randomize the VDSO base */

arch/mips/lantiq/xway/sysctrl.c

@@ -485,7 +485,7 @@ void __init ltq_soc_init(void)
 	/* add our generic xway clocks */
 	clkdev_add_pmu("10000000.fpi", NULL, 0, 0, PMU_FPI);
 	clkdev_add_pmu("1e100a00.gptu", NULL, 1, 0, PMU_GPT);
-	clkdev_add_pmu("1e100bb0.stp", NULL, 1, 0, PMU_STP);
+	clkdev_add_pmu("1e100bb0.gpio", NULL, 1, 0, PMU_STP);
 	clkdev_add_pmu("1e100c00.serial", NULL, 0, 0, PMU_ASC1);
 	clkdev_add_pmu("1e104100.dma", NULL, 1, 0, PMU_DMA);
 	clkdev_add_pmu("1e100800.spi", NULL, 1, 0, PMU_SPI);

arch/mips/mm/tlb-r4k.c

@@ -12,9 +12,11 @@
 #include <linux/init.h>
 #include <linux/sched.h>
 #include <linux/smp.h>
+#include <linux/memblock.h>
 #include <linux/mm.h>
 #include <linux/hugetlb.h>
 #include <linux/export.h>
+#include <linux/sort.h>
 
 #include <asm/cpu.h>
 #include <asm/cpu-type.h>
@@ -508,58 +510,95 @@ static int __init set_ntlb(char *str)
 
 __setup("ntlb=", set_ntlb);
 
-/* Initialise all TLB entries with unique values */
-static void r4k_tlb_uniquify(void)
+
+/* Comparison function for EntryHi VPN fields.  */
+static int r4k_vpn_cmp(const void *a, const void *b)
 {
-	int entry = num_wired_entries();
+	long v = *(unsigned long *)a - *(unsigned long *)b;
+	int s = sizeof(long) > sizeof(int) ? sizeof(long) * 8 - 1: 0;
+	return s ? (v != 0) | v >> s : v;
+}
+
+/*
+ * Initialise all TLB entries with unique values that do not clash with
+ * what we have been handed over and what we'll be using ourselves.
+ */
+static void __ref r4k_tlb_uniquify(void)
+{
+	int tlbsize = current_cpu_data.tlbsize;
+	bool use_slab = slab_is_available();
+	int start = num_wired_entries();
+	phys_addr_t tlb_vpn_size;
+	unsigned long *tlb_vpns;
+	unsigned long vpn_mask;
+	int cnt, ent, idx, i;
+
+	vpn_mask = GENMASK(cpu_vmbits - 1, 13);
+	vpn_mask |= IS_ENABLED(CONFIG_64BIT) ? 3ULL << 62 : 1 << 31;
+
+	tlb_vpn_size = tlbsize * sizeof(*tlb_vpns);
+	tlb_vpns = (use_slab ?
+		    kmalloc(tlb_vpn_size, GFP_KERNEL) :
+		    memblock_alloc_raw(tlb_vpn_size, sizeof(*tlb_vpns)));
+	if (WARN_ON(!tlb_vpns))
+		return; /* Pray local_flush_tlb_all() is good enough. */
 
 	htw_stop();
+
+	for (i = start, cnt = 0; i < tlbsize; i++, cnt++) {
+		unsigned long vpn;
+
+		write_c0_index(i);
+		mtc0_tlbr_hazard();
+		tlb_read();
+		tlb_read_hazard();
+		vpn = read_c0_entryhi();
+		vpn &= vpn_mask & PAGE_MASK;
+		tlb_vpns[cnt] = vpn;
+
+		/* Prevent any large pages from overlapping regular ones.  */
+		write_c0_pagemask(read_c0_pagemask() & PM_DEFAULT_MASK);
+		mtc0_tlbw_hazard();
+		tlb_write_indexed();
+		tlbw_use_hazard();
+	}
+
+	sort(tlb_vpns, cnt, sizeof(tlb_vpns[0]), r4k_vpn_cmp, NULL);
+
+	write_c0_pagemask(PM_DEFAULT_MASK);
 	write_c0_entrylo0(0);
 	write_c0_entrylo1(0);
 
-	while (entry < current_cpu_data.tlbsize) {
-		unsigned long asid_mask = cpu_asid_mask(&current_cpu_data);
-		unsigned long asid = 0;
-		int idx;
+	idx = 0;
+	ent = tlbsize;
+	for (i = start; i < tlbsize; i++)
+		while (1) {
+			unsigned long entryhi, vpn;
 
-		/* Skip wired MMID to make ginvt_mmid work */
-		if (cpu_has_mmid)
-			asid = MMID_KERNEL_WIRED + 1;
+			entryhi = UNIQUE_ENTRYHI(ent);
+			vpn = entryhi & vpn_mask & PAGE_MASK;
 
-		/* Check for match before using UNIQUE_ENTRYHI */
-		do {
-			if (cpu_has_mmid) {
-				write_c0_memorymapid(asid);
-				write_c0_entryhi(UNIQUE_ENTRYHI(entry));
-			} else {
-				write_c0_entryhi(UNIQUE_ENTRYHI(entry) | asid);
-			}
-			mtc0_tlbw_hazard();
-			tlb_probe();
-			tlb_probe_hazard();
-			idx = read_c0_index();
-			/* No match or match is on current entry */
-			if (idx < 0 || idx == entry)
+			if (idx >= cnt || vpn < tlb_vpns[idx]) {
+				write_c0_entryhi(entryhi);
+				write_c0_index(i);
+				mtc0_tlbw_hazard();
+				tlb_write_indexed();
+				ent++;
 				break;
-			/*
-			 * If we hit a match, we need to try again with
-			 * a different ASID.
-			 */
-			asid++;
-		} while (asid < asid_mask);
-
-		if (idx >= 0 && idx != entry)
-			panic("Unable to uniquify TLB entry %d", idx);
-
-		write_c0_index(entry);
-		mtc0_tlbw_hazard();
-		tlb_write_indexed();
-		entry++;
-	}
+			} else if (vpn == tlb_vpns[idx]) {
+				ent++;
+			} else {
+				idx++;
+			}
+		}
 
 	tlbw_use_hazard();
 	htw_start();
 	flush_micro_tlb();
+	if (use_slab)
+		kfree(tlb_vpns);
+	else
+		memblock_free(tlb_vpns, tlb_vpn_size);
 }
 
 /*
@@ -602,6 +641,7 @@ static void r4k_tlb_configure(void)
 
 	/* From this point on the ARC firmware is dead.	 */
 	r4k_tlb_uniquify();
+	local_flush_tlb_all();
 
 	/* Did I tell you that ARC SUCKS?  */
 }

arch/mips/mti-malta/malta-init.c

@@ -241,16 +241,22 @@ mips_pci_controller:
 #endif
 
 		/*
-		 * Setup the Malta max (2GB) memory for PCI DMA in host bridge
-		 * in transparent addressing mode.
+		 * Set up memory mapping in host bridge for PCI DMA masters,
+		 * in transparent addressing mode.  For EVA use the Malta
+		 * maximum of 2 GiB memory in the alias space at 0x80000000
+		 * as per PHYS_OFFSET.  Otherwise use 256 MiB of memory in
+		 * the regular space, avoiding mapping the PCI MMIO window
+		 * for DMA as it seems to confuse the system controller's
+		 * logic, causing PCI MMIO to stop working.
 		 */
-		mask = PHYS_OFFSET | PCI_BASE_ADDRESS_MEM_PREFETCH;
-		MSC_WRITE(MSC01_PCI_BAR0, mask);
-		MSC_WRITE(MSC01_PCI_HEAD4, mask);
+		mask = PHYS_OFFSET ? PHYS_OFFSET : 0xf0000000;
+		MSC_WRITE(MSC01_PCI_BAR0,
+			  mask | PCI_BASE_ADDRESS_MEM_PREFETCH);
+		MSC_WRITE(MSC01_PCI_HEAD4,
+			  PHYS_OFFSET | PCI_BASE_ADDRESS_MEM_PREFETCH);
 
-		mask &= MSC01_PCI_BAR0_SIZE_MSK;
 		MSC_WRITE(MSC01_PCI_P2SCMSKL, mask);
-		MSC_WRITE(MSC01_PCI_P2SCMAPL, mask);
+		MSC_WRITE(MSC01_PCI_P2SCMAPL, PHYS_OFFSET);
 
 		/* Don't handle target retries indefinitely.  */
 		if ((data & MSC01_PCI_CFG_MAXRTRY_MSK) ==

arch/mips/sgi-ip22/ip22-platform.c

@@ -221,3 +221,35 @@ static int __init sgi_ds1286_devinit(void)
 }
 
 device_initcall(sgi_ds1286_devinit);
+
+#define SGI_ZILOG_BASE	(HPC3_CHIP0_BASE + \
+			 offsetof(struct hpc3_regs, pbus_extregs[6]) + \
+			 offsetof(struct sgioc_regs, uart))
+
+static struct resource sgi_zilog_resources[] = {
+	{
+		.start	= SGI_ZILOG_BASE,
+		.end	= SGI_ZILOG_BASE + 15,
+		.flags	= IORESOURCE_MEM
+	},
+	{
+		.start	= SGI_SERIAL_IRQ,
+		.end	= SGI_SERIAL_IRQ,
+		.flags	= IORESOURCE_IRQ
+	}
+};
+
+static struct platform_device zilog_device = {
+	.name		= "ip22zilog",
+	.id		= 0,
+	.num_resources	= ARRAY_SIZE(sgi_zilog_resources),
+	.resource	= sgi_zilog_resources,
+};
+
+
+static int __init sgi_zilog_devinit(void)
+{
+	return platform_device_register(&zilog_device);
+}
+
+device_initcall(sgi_zilog_devinit);

arch/openrisc/kernel/module.c

@@ -55,6 +55,10 @@ int apply_relocate_add(Elf32_Shdr *sechdrs,
 			value |= *location & 0xfc000000;
 			*location = value;
 			break;
+		case R_OR1K_32_PCREL:
+			value -= (uint32_t)location;
+			*location = value;
+			break;
 		case R_OR1K_AHI16:
 			/* Adjust the operand to match with a signed LO16.  */
 			value += 0x8000;

arch/parisc/include/asm/video.h

@@ -6,7 +6,7 @@
 
 struct device;
 
-#if defined(CONFIG_STI_CORE)
+#if defined(CONFIG_STI_CORE) && defined(CONFIG_VIDEO)
 bool video_is_primary_device(struct device *dev);
 #define video_is_primary_device video_is_primary_device
 #endif

arch/parisc/kernel/unwind.c

@@ -35,6 +35,8 @@
 
 #define KERNEL_START (KERNEL_BINARY_TEXT_START)
 
+#define ALIGNMENT_OK(ptr, type) (((ptr) & (sizeof(type) - 1)) == 0)
+
 extern struct unwind_table_entry __start___unwind[];
 extern struct unwind_table_entry __stop___unwind[];
 
@@ -257,12 +259,15 @@ static int unwind_special(struct unwind_frame_info *info, unsigned long pc, int
 	if (pc_is_kernel_fn(pc, _switch_to) ||
 	    pc == (unsigned long)&_switch_to_ret) {
 		info->prev_sp = info->sp - CALLEE_SAVE_FRAME_SIZE;
-		info->prev_ip = *(unsigned long *)(info->prev_sp - RP_OFFSET);
+		if (ALIGNMENT_OK(info->prev_sp, long))
+			info->prev_ip = *(unsigned long *)(info->prev_sp - RP_OFFSET);
+		else
+			info->prev_ip = info->prev_sp = 0;
 		return 1;
 	}
 
 #ifdef CONFIG_IRQSTACKS
-	if (pc == (unsigned long)&_call_on_stack) {
+	if (pc == (unsigned long)&_call_on_stack && ALIGNMENT_OK(info->sp, long)) {
 		info->prev_sp = *(unsigned long *)(info->sp - FRAME_SIZE - REG_SZ);
 		info->prev_ip = *(unsigned long *)(info->sp - FRAME_SIZE - RP_OFFSET);
 		return 1;
@@ -370,8 +375,10 @@ static void unwind_frame_regs(struct unwind_frame_info *info)
 			info->prev_sp = info->sp - frame_size;
 			if (e->Millicode)
 				info->rp = info->r31;
-			else if (rpoffset)
+			else if (rpoffset && ALIGNMENT_OK(info->prev_sp, long))
 				info->rp = *(unsigned long *)(info->prev_sp - rpoffset);
+			else
+				info->rp = 0;
 			info->prev_ip = info->rp;
 			info->rp = 0;
 		}

arch/powerpc/kernel/eeh_driver.c

@@ -334,7 +334,7 @@ static enum pci_ers_result eeh_report_error(struct eeh_dev *edev,
 	rc = driver->err_handler->error_detected(pdev, pci_channel_io_frozen);
 
 	edev->in_error = true;
-	pci_uevent_ers(pdev, PCI_ERS_RESULT_NONE);
+	pci_uevent_ers(pdev, rc);
 	return rc;
 }
 

arch/riscv/Kconfig.errata

@@ -130,4 +130,21 @@ config ERRATA_THEAD_GHOSTWRITE
 
 	  If you don't know what to do here, say "Y".
 
+config ERRATA_THEAD_WRITE_ONCE
+	bool "Apply T-Head WRITE_ONCE errata"
+	depends on ERRATA_THEAD
+	default y
+	help
+	  The early version of T-Head C9xx cores of sg2042 & th1520 have a store
+	  merge buffer delay problem. The store merge buffer could improve the
+	  store queue performance by merging multi-store requests, but when there
+	  are no continued store requests, the prior single store request would be
+	  waiting in the store queue for a long time. That would cause signifi-
+	  cant problems for communication between multi-cores. Appending a
+	  fence w.o could immediately flush the store merge buffer and let other
+	  cores see the write result.
+
+	  This will apply the WRITE_ONCE errata to handle the non-standard beh-
+	  avior via appending a fence w.o instruction for WRITE_ONCE().
+
 endmenu # "CPU errata selection"

arch/riscv/Makefile

@@ -166,7 +166,7 @@ boot-image-$(CONFIG_KERNEL_LZO)		:= Image.lzo
 boot-image-$(CONFIG_KERNEL_ZSTD)	:= Image.zst
 boot-image-$(CONFIG_KERNEL_XZ)		:= Image.xz
 ifdef CONFIG_RISCV_M_MODE
-boot-image-$(CONFIG_ARCH_CANAAN)	:= loader.bin
+boot-image-$(CONFIG_SOC_CANAAN_K210)	:= loader.bin
 endif
 boot-image-$(CONFIG_EFI_ZBOOT)		:= vmlinuz.efi
 boot-image-$(CONFIG_XIP_KERNEL)		:= xipImage

arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi

@@ -28,7 +28,7 @@
 			riscv,isa-base = "rv64i";
 			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
 					       "zifencei", "zihpm", "xtheadvector";
-			thead,vlenb = <128>;
+			thead,vlenb = <16>;
 			#cooling-cells = <2>;
 
 			cpu0_intc: interrupt-controller {

arch/riscv/boot/dts/sophgo/sg2042-cpus.dtsi

@@ -272,6 +272,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache0>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu0_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -299,6 +300,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache0>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu1_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -326,6 +328,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache0>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu2_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -353,6 +356,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache0>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu3_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -380,6 +384,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache1>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu4_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -407,6 +412,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache1>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu5_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -434,6 +440,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache1>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu6_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -461,6 +468,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache1>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu7_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -488,6 +496,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache4>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu8_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -515,6 +524,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache4>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu9_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -542,6 +552,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache4>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu10_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -569,6 +580,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache4>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu11_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -596,6 +608,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache5>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu12_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -623,6 +636,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache5>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu13_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -650,6 +664,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache5>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu14_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -677,6 +692,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache5>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu15_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -704,6 +720,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache2>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu16_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -731,6 +748,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache2>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu17_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -758,6 +776,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache2>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu18_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -785,6 +804,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache2>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu19_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -812,6 +832,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache3>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu20_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -839,6 +860,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache3>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu21_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -866,6 +888,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache3>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu22_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -893,6 +916,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache3>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <0>;
 
 			cpu23_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -920,6 +944,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache6>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu24_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -947,6 +972,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache6>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu25_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -974,6 +1000,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache6>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu26_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1001,6 +1028,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache6>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu27_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1028,6 +1056,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache7>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu28_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1055,6 +1084,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache7>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu29_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1082,6 +1112,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache7>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu30_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1109,6 +1140,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache7>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <1>;
 
 			cpu31_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1136,6 +1168,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache8>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu32_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1163,6 +1196,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache8>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu33_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1190,6 +1224,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache8>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu34_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1217,6 +1252,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache8>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu35_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1244,6 +1280,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache9>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu36_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1271,6 +1308,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache9>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu37_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1298,6 +1336,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache9>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu38_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1325,6 +1364,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache9>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu39_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1352,6 +1392,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache12>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu40_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1379,6 +1420,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache12>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu41_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1406,6 +1448,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache12>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu42_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1433,6 +1476,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache12>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu43_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1460,6 +1504,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache13>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu44_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1487,6 +1532,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache13>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu45_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1514,6 +1560,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache13>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu46_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1541,6 +1588,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache13>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu47_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1568,6 +1616,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache10>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu48_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1595,6 +1644,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache10>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu49_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1622,6 +1672,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache10>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu50_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1649,6 +1700,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache10>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu51_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1676,6 +1728,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache11>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu52_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1703,6 +1756,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache11>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu53_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1730,6 +1784,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache11>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu54_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1757,6 +1812,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache11>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <2>;
 
 			cpu55_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1784,6 +1840,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache14>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu56_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1811,6 +1868,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache14>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu57_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1838,6 +1896,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache14>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu58_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1865,6 +1924,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache14>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu59_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1892,6 +1952,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache15>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu60_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1919,6 +1980,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache15>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu61_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1946,6 +2008,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache15>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu62_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -1973,6 +2036,7 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache15>;
 			mmu-type = "riscv,sv39";
+			numa-node-id = <3>;
 
 			cpu63_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";

arch/riscv/boot/dts/sophgo/sg2042-evb-v1.dts

@@ -164,6 +164,18 @@
 	};
 };
 
+&pcie_rc0 {
+	status = "okay";
+};
+
+&pcie_rc1 {
+	status = "okay";
+};
+
+&pcie_rc2 {
+	status = "okay";
+};
+
 &pinctrl {
 	emmc_cfg: sdhci-emmc-cfg {
 		sdhci-emmc-wp-pins {
@@ -238,6 +250,30 @@
 	status = "okay";
 };
 
+&spifmc0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
+
+&spifmc1 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
+
 &uart0 {
 	pinctrl-0 = <&uart0_cfg>;
 	pinctrl-names = "default";

arch/riscv/boot/dts/sophgo/sg2042-evb-v2.dts

@@ -152,6 +152,18 @@
 	};
 };
 
+&pcie_rc0 {
+	status = "okay";
+};
+
+&pcie_rc1 {
+	status = "okay";
+};
+
+&pcie_rc2 {
+	status = "okay";
+};
+
 &pinctrl {
 	emmc_cfg: sdhci-emmc-cfg {
 		sdhci-emmc-wp-pins {
@@ -226,6 +238,18 @@
 	status = "okay";
 };
 
+&spifmc1 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
+
 &uart0 {
 	pinctrl-0 = <&uart0_cfg>;
 	pinctrl-names = "default";

arch/riscv/boot/dts/sophgo/sg2042-milkv-pioneer.dts

@@ -128,6 +128,18 @@
 	};
 };
 
+&pcie_rc0 {
+	status = "okay";
+};
+
+&pcie_rc2 {
+	status = "okay";
+};
+
+&pcie_rc3 {
+	status = "okay";
+};
+
 &sd {
 	pinctrl-0 = <&sd_cfg>;
 	pinctrl-names = "default";
@@ -138,6 +150,30 @@
 	status = "okay";
 };
 
+&spifmc0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
+
+&spifmc1 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+		spi-tx-bus-width = <1>;
+		spi-rx-bus-width = <1>;
+	};
+};
+
 &uart0 {
 	pinctrl-0 = <&uart0_cfg>;
 	pinctrl-names = "default";

arch/riscv/boot/dts/sophgo/sg2042.dtsi

@@ -19,6 +19,26 @@
 	#size-cells = <2>;
 	dma-noncoherent;
 
+	distance-map {
+		compatible = "numa-distance-map-v1";
+		distance-matrix = <0 0 10>,
+				  <0 1 15>,
+				  <0 2 25>,
+				  <0 3 30>,
+				  <1 0 15>,
+				  <1 1 10>,
+				  <1 2 30>,
+				  <1 3 25>,
+				  <2 0 25>,
+				  <2 1 30>,
+				  <2 2 10>,
+				  <2 3 15>,
+				  <3 0 30>,
+				  <3 1 25>,
+				  <3 2 15>,
+				  <3 3 10>;
+	};
+
 	aliases {
 		serial0 = &uart0;
 	};
@@ -48,6 +68,30 @@
 		interrupt-parent = <&intc>;
 		ranges;
 
+		spifmc0: spi@7000180000 {
+			compatible = "sophgo,sg2042-spifmc-nor";
+			reg = <0x70 0x00180000 0x0 0x1000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&clkgen GATE_CLK_AHB_SF>;
+			interrupt-parent = <&intc>;
+			interrupts = <108 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rstgen RST_SF0>;
+			status = "disabled";
+		};
+
+		spifmc1: spi@7002180000 {
+			compatible = "sophgo,sg2042-spifmc-nor";
+			reg = <0x70 0x02180000 0x0 0x1000000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			clocks = <&clkgen GATE_CLK_AHB_SF>;
+			interrupt-parent = <&intc>;
+			interrupts = <109 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&rstgen RST_SF1>;
+			status = "disabled";
+		};
+
 		i2c0: i2c@7030005000 {
 			compatible = "snps,designware-i2c";
 			reg = <0x70 0x30005000 0x0 0x1000>;
@@ -190,7 +234,7 @@
 			reg-names = "clr", "doorbell";
 			msi-controller;
 			#msi-cells = <0>;
-			msi-ranges = <&intc 64 IRQ_TYPE_LEVEL_HIGH 32>;
+			msi-ranges = <&intc 64 IRQ_TYPE_EDGE_RISING 32>;
 		};
 
 		rpgate: clock-controller@7030010368 {
@@ -220,6 +264,94 @@
 			#clock-cells = <1>;
 		};
 
+		pcie_rc0: pcie@7060000000 {
+			compatible = "sophgo,sg2042-pcie-host";
+			device_type = "pci";
+			reg = <0x70 0x60000000  0x0 0x00800000>,
+			      <0x40 0x00000000  0x0 0x00001000>;
+			reg-names = "reg", "cfg";
+			linux,pci-domain = <0>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges = <0x01000000 0x0  0x00000000  0x40 0xc0000000  0x0 0x00400000>,
+				 <0x42000000 0x0  0xd0000000  0x40 0xd0000000  0x0 0x10000000>,
+				 <0x02000000 0x0  0xe0000000  0x40 0xe0000000  0x0 0x20000000>,
+				 <0x43000000 0x42 0x00000000  0x42 0x00000000  0x2 0x00000000>,
+				 <0x03000000 0x41 0x00000000  0x41 0x00000000  0x1 0x00000000>;
+			bus-range = <0x0 0xff>;
+			vendor-id = <0x1f1c>;
+			device-id = <0x2042>;
+			cdns,no-bar-match-nbits = <48>;
+			msi-parent = <&msi>;
+			status = "disabled";
+		};
+
+		pcie_rc1: pcie@7060800000 {
+			compatible = "sophgo,sg2042-pcie-host";
+			device_type = "pci";
+			reg = <0x70 0x60800000  0x0 0x00800000>,
+			      <0x44 0x00000000  0x0 0x00001000>;
+			reg-names = "reg", "cfg";
+			linux,pci-domain = <1>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges = <0x01000000 0x0  0x00000000  0x44 0xc0400000  0x0 0x00400000>,
+				 <0x42000000 0x0  0xd0000000  0x44 0xd0000000  0x0 0x10000000>,
+				 <0x02000000 0x0  0xe0000000  0x44 0xe0000000  0x0 0x20000000>,
+				 <0x43000000 0x46 0x00000000  0x46 0x00000000  0x2 0x00000000>,
+				 <0x03000000 0x45 0x00000000  0x45 0x00000000  0x1 0x00000000>;
+			bus-range = <0x0 0xff>;
+			vendor-id = <0x1f1c>;
+			device-id = <0x2042>;
+			cdns,no-bar-match-nbits = <48>;
+			msi-parent = <&msi>;
+			status = "disabled";
+		};
+
+		pcie_rc2: pcie@7062000000 {
+			compatible = "sophgo,sg2042-pcie-host";
+			device_type = "pci";
+			reg = <0x70 0x62000000  0x0 0x00800000>,
+			      <0x48 0x00000000  0x0 0x00001000>;
+			reg-names = "reg", "cfg";
+			linux,pci-domain = <2>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges = <0x01000000 0x0  0x00000000  0x48 0xc0800000  0x0 0x00400000>,
+				 <0x42000000 0x0  0xd0000000  0x48 0xd0000000  0x0 0x10000000>,
+				 <0x02000000 0x0  0xe0000000  0x48 0xe0000000  0x0 0x20000000>,
+				 <0x03000000 0x49 0x00000000  0x49 0x00000000  0x1 0x00000000>,
+				 <0x43000000 0x4a 0x00000000  0x4a 0x00000000  0x2 0x00000000>;
+			bus-range = <0x0 0xff>;
+			vendor-id = <0x1f1c>;
+			device-id = <0x2042>;
+			cdns,no-bar-match-nbits = <48>;
+			msi-parent = <&msi>;
+			status = "disabled";
+		};
+
+		pcie_rc3: pcie@7062800000 {
+			compatible = "sophgo,sg2042-pcie-host";
+			device_type = "pci";
+			reg = <0x70 0x62800000  0x0 0x00800000>,
+			      <0x4c 0x00000000  0x0 0x00001000>;
+			reg-names = "reg", "cfg";
+			linux,pci-domain = <3>;
+			#address-cells = <3>;
+			#size-cells = <2>;
+			ranges = <0x01000000 0x0  0x00000000  0x4c 0xc0c00000  0x0 0x00400000>,
+				 <0x42000000 0x0  0xf8000000  0x4c 0xf8000000  0x0 0x04000000>,
+				 <0x02000000 0x0  0xfc000000  0x4c 0xfc000000  0x0 0x04000000>,
+				 <0x43000000 0x4e 0x00000000  0x4e 0x00000000  0x2 0x00000000>,
+				 <0x03000000 0x4d 0x00000000  0x4d 0x00000000  0x1 0x00000000>;
+			bus-range = <0x0 0xff>;
+			vendor-id = <0x1f1c>;
+			device-id = <0x2042>;
+			cdns,no-bar-match-nbits = <48>;
+			msi-parent = <&msi>;
+			status = "disabled";
+		};
+
 		clint_mswi: interrupt-controller@7094000000 {
 			compatible = "sophgo,sg2042-aclint-mswi", "thead,c900-aclint-mswi";
 			reg = <0x00000070 0x94000000 0x00000000 0x00004000>;

arch/riscv/boot/dts/sophgo/sg2044-sophgo-srd3-10.dts

@@ -36,6 +36,10 @@
 	status = "okay";
 };
 
+&efuse0 {
+	status = "okay";
+};
+
 &gmac0 {
 	phy-handle = <&phy0>;
 	phy-mode = "rgmii-id";

arch/riscv/boot/dts/sophgo/sg2044.dtsi

@@ -214,7 +214,7 @@
 			reg-names = "clr", "doorbell";
 			#msi-cells = <0>;
 			msi-controller;
-			msi-ranges = <&intc 352 IRQ_TYPE_LEVEL_HIGH 512>;
+			msi-ranges = <&intc 352 IRQ_TYPE_EDGE_RISING 512>;
 			status = "disabled";
 		};
 
@@ -408,6 +408,18 @@
 			status = "disabled";
 		};
 
+		efuse0: efuse@7040000000 {
+			compatible = "sophgo,sg2044-efuse";
+			reg = <0x70 0x40000000 0x0 0x1000>;
+			#address-cells = <1>;
+			#size-cells = <1>;
+			clocks = <&clk CLK_GATE_EFUSE>,
+				 <&clk CLK_GATE_APB_EFUSE>;
+			clock-names = "core", "apb";
+			resets = <&rst RST_EFUSE0>;
+			status = "disabled";
+		};
+
 		i2c0: i2c@7040005000 {
 			compatible = "sophgo,sg2044-i2c", "snps,designware-i2c";
 			reg = <0x70 0x40005000 0x0 0x1000>;

arch/riscv/boot/dts/thead/Makefile

@@ -1,2 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a.dtb th1520-beaglev-ahead.dtb
+dtb-$(CONFIG_ARCH_THEAD) += th1520-lichee-pi-4a-16g.dtb

arch/riscv/boot/dts/thead/th1520-lichee-pi-4a-16g.dts

@@ -0,0 +1,18 @@
+// SPDX-License-Identifier: (GPL-2.0 OR MIT)
+/*
+ * Copyright (C) 2023 Han Gao <gaohan@iscas.ac.cn>
+ */
+
+/dts-v1/;
+
+#include "th1520-lichee-pi-4a.dts"
+
+/ {
+        model = "Sipeed Lichee Pi 4A 16G";
+        compatible = "sipeed,lichee-pi-4a", "sipeed,lichee-module-4a", "thead,th1520";
+
+        memory@0 {
+                device_type = "memory";
+                reg = <0x0 0x00000000 0x4 0x00000000>;
+        };
+};

arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts

@@ -4,6 +4,7 @@
  */
 
 #include "th1520-lichee-module-4a.dtsi"
+#include <dt-bindings/gpio/gpio.h>
 
 / {
 	model = "Sipeed Lichee Pi 4A";
@@ -23,14 +24,206 @@
 		serial4 = &uart4;
 		serial5 = &uart5;
 		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2c2 = &i2c2;
+		i2c3 = &i2c3;
+		i2c4 = &i2c4;
 	};
 
 	chosen {
 		stdout-path = "serial0:115200n8";
 	};
+
+	hdmi-connector {
+		compatible = "hdmi-connector";
+		type = "a";
+
+		port {
+			hdmi_con_in: endpoint {
+				remote-endpoint = <&hdmi_out_con>;
+			};
+		};
+	};
+
+	fan: pwm-fan {
+		pinctrl-names = "default";
+		pinctrl-0 = <&fan_pins>;
+		compatible = "pwm-fan";
+		#cooling-cells = <2>;
+		pwms = <&pwm 1 10000000 0>;
+		cooling-levels = <0 66 196 255>;
+	};
+
+	hub_5v: regulator-hub_5v {
+		compatible = "regulator-fixed";
+		regulator-name = "HUB_5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&ioexp3 3 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-always-on;
+	};
+
+	vcc5v_usb: regulator-vcc5v_usb {
+		compatible = "regulator-fixed";
+		regulator-name = "VCC5V_USB";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-always-on;
+	};
+
+	thermal-zones {
+		cpu-thermal {
+			polling-delay = <1000>;
+			polling-delay-passive = <1000>;
+			thermal-sensors = <&pvt 0>;
+
+			trips {
+				trip_active0: active-0 {
+					temperature = <39000>;
+					hysteresis = <5000>;
+					type = "active";
+				};
+
+				trip_active1: active-1 {
+					temperature = <50000>;
+					hysteresis = <5000>;
+					type = "active";
+				};
+
+				trip_active2: active-2 {
+					temperature = <60000>;
+					hysteresis = <5000>;
+					type = "active";
+				};
+			};
+
+			cooling-maps {
+				map-active-0 {
+					cooling-device = <&fan 1 1>;
+					trip = <&trip_active0>;
+				};
+
+				map-active-1 {
+					cooling-device = <&fan 2 2>;
+					trip = <&trip_active1>;
+				};
+
+				map-active-2 {
+					cooling-device = <&fan 3 3>;
+					trip = <&trip_active2>;
+				};
+			};
+		};
+	};
+};
+
+&aogpio {
+	sel-usb-hub-hog {
+		gpio-hog;
+		gpios = <4 GPIO_ACTIVE_HIGH>;
+		output-high;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+	i2c-sda-hold-time-ns = <300>;
+	i2c-sda-falling-time-ns = <510>;
+	i2c-scl-falling-time-ns = <510>;
+	status = "okay";
+
+	ioexp1: gpio@18 {
+		compatible = "nxp,pca9557";
+		reg = <0x18>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "cam0_dvdd12",
+				  "cam0_avdd28",
+				  "cam0_dovdd18";
+	};
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+	i2c-sda-hold-time-ns = <300>;
+	i2c-sda-falling-time-ns = <510>;
+	i2c-scl-falling-time-ns = <510>;
+	status = "okay";
+
+	ioexp2: gpio@18 {
+		compatible = "nxp,pca9557";
+		reg = <0x18>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "",
+				  "cam0_reset",
+				  "cam1_reset",
+				  "cam2_reset",
+				  "wl_host_wake",
+				  "bt_resetn",
+				  "",
+				  "bt_host_wake";
+	};
+};
+
+&i2c3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c3_pins>;
+	clock-frequency = <100000>;
+	i2c-sda-hold-time-ns = <300>;
+	i2c-sda-falling-time-ns = <510>;
+	i2c-scl-falling-time-ns = <510>;
+	status = "okay";
+
+	ioexp3: gpio@18 {
+		compatible = "nxp,pca9557";
+		reg = <0x18>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names = "tp0_rst",
+				  "",
+				  "",
+				  "vcc5v_usb",
+				  "vdd28_tp0",
+				  "vdd33_lcd0",
+				  "vdd18_lcd0",
+				  "lcd0_reset";
+	};
 };
 
 &padctrl0_apsys {
+	fan_pins: fan-0 {
+		pwm1-pins {
+			pins = "GPIO3_3"; /* PWM1 */
+			function = "pwm";
+			bias-disable;
+			drive-strength = <25>;
+			input-disable;
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+
+	i2c3_pins: i2c3-0 {
+		i2c-pins {
+			pins = "I2C3_SCL", "I2C3_SDA";
+			function = "i2c";
+			bias-disable;
+			drive-strength = <7>;
+			input-enable;
+			input-schmitt-enable;
+			slew-rate = <0>;
+		};
+	};
+
 	uart0_pins: uart0-0 {
 		tx-pins {
 			pins = "UART0_TXD";
@@ -54,8 +247,74 @@
 	};
 };
 
+&dpu {
+	status = "okay";
+};
+
+&hdmi {
+	status = "okay";
+};
+
+&hdmi_out_port {
+	hdmi_out_con: endpoint {
+		remote-endpoint = <&hdmi_con_in>;
+
+	};
+};
+
+&padctrl1_apsys {
+	i2c0_pins: i2c0-0 {
+		i2c-pins {
+			pins = "I2C0_SCL", "I2C0_SDA";
+			function = "i2c";
+			bias-disable;
+			drive-strength = <7>;
+			input-enable;
+			input-schmitt-enable;
+			slew-rate = <0>;
+		};
+	};
+
+	i2c1_pins: i2c1-0 {
+		i2c-pins {
+			pins = "I2C1_SCL", "I2C1_SDA";
+			function = "i2c";
+			bias-disable;
+			drive-strength = <7>;
+			input-enable;
+			input-schmitt-enable;
+			slew-rate = <0>;
+		};
+	};
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_pins>;
 	status = "okay";
 };
+
+&usb {
+	status = "okay";
+};
+
+&usb_dwc3 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hub_2_0: hub@1 {
+		compatible = "usb2109,2817";
+		reg = <1>;
+		peer-hub = <&hub_3_0>;
+		vdd-supply = <&hub_5v>;
+		vbus-supply = <&vcc5v_usb>;
+	};
+
+	hub_3_0: hub@2 {
+		compatible = "usb2109,817";
+		reg = <2>;
+		peer-hub = <&hub_2_0>;
+		vbus-supply = <&vcc5v_usb>;
+	};
+};

arch/riscv/boot/dts/thead/th1520.dtsi

@@ -24,8 +24,11 @@
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm", "zfh",
+					       "xtheadvector";
+			thead,vlenb = <16>;
 			reg = <0>;
 			i-cache-block-size = <64>;
 			i-cache-size = <65536>;
@@ -35,6 +38,8 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache>;
 			mmu-type = "riscv,sv39";
+			operating-points-v2 = <&cpu_opp>;
+			clocks = <&clk CLK_C910>;
 
 			cpu0_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -48,8 +53,11 @@
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm", "zfh",
+					       "xtheadvector";
+			thead,vlenb = <16>;
 			reg = <1>;
 			i-cache-block-size = <64>;
 			i-cache-size = <65536>;
@@ -59,6 +67,8 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache>;
 			mmu-type = "riscv,sv39";
+			operating-points-v2 = <&cpu_opp>;
+			clocks = <&clk CLK_C910>;
 
 			cpu1_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -72,8 +82,11 @@
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm", "zfh",
+					       "xtheadvector";
+			thead,vlenb = <16>;
 			reg = <2>;
 			i-cache-block-size = <64>;
 			i-cache-size = <65536>;
@@ -83,6 +96,8 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache>;
 			mmu-type = "riscv,sv39";
+			operating-points-v2 = <&cpu_opp>;
+			clocks = <&clk CLK_C910>;
 
 			cpu2_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -96,8 +111,11 @@
 			device_type = "cpu";
 			riscv,isa = "rv64imafdc";
 			riscv,isa-base = "rv64i";
-			riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
-					       "zifencei", "zihpm";
+			riscv,isa-extensions = "i", "m", "a", "f", "d", "c",
+					       "ziccrse", "zicntr", "zicsr",
+					       "zifencei", "zihpm", "zfh",
+					       "xtheadvector";
+			thead,vlenb = <16>;
 			reg = <3>;
 			i-cache-block-size = <64>;
 			i-cache-size = <65536>;
@@ -107,6 +125,8 @@
 			d-cache-sets = <512>;
 			next-level-cache = <&l2_cache>;
 			mmu-type = "riscv,sv39";
+			operating-points-v2 = <&cpu_opp>;
+			clocks = <&clk CLK_C910>;
 
 			cpu3_intc: interrupt-controller {
 				compatible = "riscv,cpu-intc";
@@ -125,6 +145,33 @@
 		};
 	};
 
+	cpu_opp: opp-table-cpu {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-300000000 {
+			opp-hz = /bits/ 64 <300000000>;
+			opp-microvolt = <600000>;
+		};
+
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <700000>;
+		};
+
+		opp-1500000000 {
+			opp-hz = /bits/ 64 <1500000000>;
+			opp-microvolt = <800000>;
+		};
+
+/*
+		opp-1848000000 {
+			opp-hz = /bits/ 64 <1848000000>;
+			opp-microvolt = <1000000>;
+		};
+ */
+	};
+
 	pmu {
 		compatible = "riscv,pmu";
 		riscv,event-to-mhpmcounters =
@@ -225,6 +272,13 @@
 		#clock-cells = <0>;
 	};
 
+	gpu_mem_clk: mem-clk {
+		compatible = "fixed-clock";
+		clock-frequency = <0>;
+		clock-output-names = "gpu_mem_clk";
+		#clock-cells = <0>;
+	};
+
 	stmmac_axi_config: stmmac-axi-config {
 		snps,wr_osr_lmt = <15>;
 		snps,rd_osr_lmt = <15>;
@@ -232,12 +286,30 @@
 	};
 
 	aon: aon {
-		compatible = "thead,th1520-aon";
+		compatible = "xuantie,th1520-aon", "thead,th1520-aon";
 		mboxes = <&mbox_910t 1>;
 		mbox-names = "aon";
 		resets = <&rst TH1520_RESET_ID_GPU_CLKGEN>;
 		reset-names = "gpu-clkgen";
 		#power-domain-cells = <1>;
+		opensbi-mboxes = <&mbox_910r>;
+		status = "okay";
+	};
+
+	mbox_910r: mbox@ffefc53000 {
+		compatible = "xuantie,th1520-mbox-r";
+		reg = <0xff 0xefc53000 0x0 0x4000>,
+		      <0xff 0xefc3f000 0x0 0x1000>,
+		      <0xff 0xefc47000 0x0 0x1000>,
+		      <0xff 0xefc4f000 0x0 0x1000>;
+		reg-names = "local_base",
+			    "remote_icu0",
+			    "remote_icu1",
+			    "remote_icu2";
+		clocks = <&clk CLK_PERI_APB_PCLK>;
+		clock-names = "ipg";
+		icu_cpu_id = <3>;
+		#mbox-cells = <2>;
 	};
 
 	soc {
@@ -386,6 +458,36 @@
 			status = "disabled";
 		};
 
+		i2c0: i2c@ffe7f20000 {
+			compatible = "snps,designware-i2c";
+			reg = <0xff 0xe7f20000 0x0 0x1000>;
+			clocks = <&clk CLK_I2C0>;
+			interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c1: i2c@ffe7f24000 {
+			compatible = "snps,designware-i2c";
+			reg = <0xff 0xe7f24000 0x0 0x1000>;
+			clocks = <&clk CLK_I2C1>;
+			interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c4: i2c@ffe7f28000 {
+			compatible = "snps,designware-i2c";
+			reg = <0xff 0xe7f28000 0x0 0x1000>;
+			clocks = <&clk CLK_I2C4>;
+			interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		gpio@ffe7f34000 {
 			compatible = "snps,dw-apb-gpio";
 			reg = <0xff 0xe7f34000 0x0 0x1000>;
@@ -484,6 +586,16 @@
 			thead,pad-group = <3>;
 		};
 
+		i2c2: i2c@ffec00c000 {
+			compatible = "snps,designware-i2c";
+			reg = <0xff 0xec00c000 0x0 0x1000>;
+			clocks = <&clk CLK_I2C2>;
+			interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		uart2: serial@ffec010000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0xff 0xec010000 0x0 0x4000>;
@@ -502,6 +614,20 @@
 			#clock-cells = <1>;
 		};
 
+		gpu: gpu@ffef400000 {
+			compatible = "thead,th1520-gpu", "img,img-bxm-4-64",
+				     "img,img-rogue";
+			reg = <0xff 0xef400000 0x0 0x100000>;
+			interrupt-parent = <&plic>;
+			interrupts = <102 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk_vo CLK_GPU_CORE>,
+				 <&gpu_mem_clk>,
+				 <&clk_vo CLK_GPU_CFG_ACLK>;
+			clock-names = "core", "mem", "sys";
+			power-domains = <&aon TH1520_GPU_PD>;
+			resets = <&rst TH1520_RESET_ID_GPU>;
+		};
+
 		rst: reset-controller@ffef528000 {
 			compatible = "thead,th1520-reset";
 			reg = <0xff 0xef528000 0x0 0x4f>;
@@ -515,6 +641,116 @@
 			#clock-cells = <1>;
 		};
 
+		hdmi: hdmi@ffef540000 {
+			compatible = "thead,th1520-dw-hdmi";
+			reg = <0xff 0xef540000 0x0 0x40000>;
+			reg-io-width = <4>;
+			interrupts = <111 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk_vo CLK_HDMI_PCLK>,
+				 <&clk_vo CLK_HDMI_SFR>,
+				 <&clk_vo CLK_HDMI_CEC>,
+				 <&clk_vo CLK_HDMI_PIXCLK>;
+			clock-names = "iahb", "isfr", "cec", "pix";
+			resets = <&rst TH1520_RESET_ID_HDMI>,
+				 <&rst TH1520_RESET_ID_HDMI_APB>;
+			reset-names = "main", "apb";
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+
+					hdmi_in: endpoint {
+						remote-endpoint = <&dpu_out_dp1>;
+					};
+				};
+
+				hdmi_out_port: port@1 {
+					reg = <1>;
+				};
+			};
+		};
+
+		dpu: display@ffef600000 {
+			compatible = "thead,th1520-dc8200", "verisilicon,dc";
+			reg = <0xff 0xef600000 0x0 0x100000>;
+			interrupts = <93 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&clk_vo CLK_DPU_CCLK>,
+				 <&clk_vo CLK_DPU_ACLK>,
+				 <&clk_vo CLK_DPU_HCLK>,
+				 <&clk_vo CLK_DPU_PIXELCLK0>,
+				 <&clk_vo CLK_DPU_PIXELCLK1>;
+			clock-names = "core", "axi", "ahb", "pix0", "pix1";
+			resets = <&rst TH1520_RESET_ID_DPU_CORE>,
+				 <&rst TH1520_RESET_ID_DPU_AXI>,
+				 <&rst TH1520_RESET_ID_DPU_AHB>;
+			reset-names = "core", "axi", "ahb";
+			status = "disabled";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				dpu_port0: port@0 {
+					reg = <0>;
+				};
+
+				dpu_port1: port@1 {
+					reg = <1>;
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					dpu_out_dp1: endpoint@1 {
+						reg = <1>;
+						remote-endpoint = <&hdmi_in>;
+					};
+				};
+			};
+		};
+
+		i2c3: i2c@ffec014000 {
+			compatible = "snps,designware-i2c";
+			reg = <0xff 0xec014000 0x0 0x1000>;
+			clocks = <&clk CLK_I2C3>;
+			interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		pwm: pwm@ffec01c000 {
+			compatible = "thead,th1520-pwm";
+			reg = <0xff 0xec01c000 0x0 0x4000>;
+			clocks = <&clk CLK_PWM>;
+			#pwm-cells = <3>;
+		};
+
+		misc_sysreg: misc_sysreg@ffec02c000 {
+			compatible = "thead,th1520-misc-sysreg", "syscon";
+			reg = <0xff 0xec02c000 0x0 0x1000>;
+		};
+
+		usb: usb@ffec03f000 {
+			compatible = "thead,th1520-usb";
+			reg = <0xff 0xec03f000 0x0 0x1000>;
+			thead,misc-sysreg = <&misc_sysreg>;
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+
+			usb_dwc3: usb@ffe7040000 {
+				compatible = "snps,dwc3";
+				reg = <0xff 0xe7040000 0x0 0x10000>;
+				interrupts = <68 IRQ_TYPE_LEVEL_HIGH>;
+				dr_mode = "host";
+				snps,usb3_lpm_capable;
+				status = "disabled";
+			};
+		};
+
 		dmac0: dma-controller@ffefc00000 {
 			compatible = "snps,axi-dma-1.01a";
 			reg = <0xff 0xefc00000 0x0 0x1000>;

arch/riscv/errata/thead/errata.c

@@ -168,6 +168,23 @@ static bool errata_probe_ghostwrite(unsigned int stage,
 	return true;
 }
 
+static bool errata_probe_write_once(unsigned int stage,
+				    unsigned long arch_id, unsigned long impid)
+{
+	if (!IS_ENABLED(CONFIG_ERRATA_THEAD_WRITE_ONCE))
+		return false;
+
+	/* target-c9xx cores report arch_id and impid as 0 */
+	if (arch_id != 0 || impid != 0)
+		return false;
+
+	if (stage == RISCV_ALTERNATIVES_BOOT ||
+	    stage == RISCV_ALTERNATIVES_MODULE)
+		return true;
+
+	return false;
+}
+
 static u32 thead_errata_probe(unsigned int stage,
 			      unsigned long archid, unsigned long impid)
 {
@@ -183,6 +200,9 @@ static u32 thead_errata_probe(unsigned int stage,
 
 	errata_probe_ghostwrite(stage, archid, impid);
 
+	if (errata_probe_write_once(stage, archid, impid))
+		cpu_req_errata |= BIT(ERRATA_THEAD_WRITE_ONCE);
+
 	return cpu_req_errata;
 }
 

arch/riscv/include/asm/errata_list.h

@@ -10,24 +10,7 @@
 #include <asm/insn-def.h>
 #include <asm/hwcap.h>
 #include <asm/vendorid_list.h>
-
-#ifdef CONFIG_ERRATA_ANDES
-#define ERRATA_ANDES_NO_IOCP 0
-#define ERRATA_ANDES_NUMBER 1
-#endif
-
-#ifdef CONFIG_ERRATA_SIFIVE
-#define	ERRATA_SIFIVE_CIP_453 0
-#define	ERRATA_SIFIVE_CIP_1200 1
-#define	ERRATA_SIFIVE_NUMBER 2
-#endif
-
-#ifdef CONFIG_ERRATA_THEAD
-#define	ERRATA_THEAD_MAE 0
-#define	ERRATA_THEAD_PMU 1
-#define	ERRATA_THEAD_GHOSTWRITE 2
-#define	ERRATA_THEAD_NUMBER 3
-#endif
+#include <asm/errata_list_vendors.h>
 
 #ifdef __ASSEMBLY__
 

arch/riscv/include/asm/errata_list_vendors.h

@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
+#ifndef ASM_ERRATA_LIST_VENDORS_H
+#define ASM_ERRATA_LIST_VENDORS_H
+
+#ifdef CONFIG_ERRATA_ANDES
+#define	ERRATA_ANDES_NO_IOCP 0
+#define	ERRATA_ANDES_NUMBER 1
+#endif
+
+#ifdef CONFIG_ERRATA_SIFIVE
+#define	ERRATA_SIFIVE_CIP_453 0
+#define	ERRATA_SIFIVE_CIP_1200 1
+#define	ERRATA_SIFIVE_NUMBER 2
+#endif
+
+#ifdef CONFIG_ERRATA_THEAD
+#define	ERRATA_THEAD_MAE 0
+#define	ERRATA_THEAD_PMU 1
+#define	ERRATA_THEAD_GHOSTWRITE 2
+#define	ERRATA_THEAD_WRITE_ONCE 3
+#define	ERRATA_THEAD_NUMBER 4
+#endif
+
+#endif /* ASM_ERRATA_LIST_VENDORS_H */

arch/riscv/include/asm/io.h

@@ -28,6 +28,10 @@
 #ifdef CONFIG_MMU
 #define IO_SPACE_LIMIT		(PCI_IO_SIZE - 1)
 #define PCI_IOBASE		((void __iomem *)PCI_IO_START)
+
+#define ioremap_wc(addr, size)	\
+	ioremap_prot((addr), (size), __pgprot(_PAGE_KERNEL_NC))
+
 #endif /* CONFIG_MMU */
 
 /*

arch/riscv/include/asm/pgtable.h

@@ -203,6 +203,7 @@ extern struct pt_alloc_ops pt_ops __meminitdata;
 
 #define PAGE_TABLE		__pgprot(_PAGE_TABLE)
 
+#define _PAGE_KERNEL_NC ((_PAGE_KERNEL & ~_PAGE_MTMASK) | _PAGE_NOCACHE)
 #define _PAGE_IOREMAP	((_PAGE_KERNEL & ~_PAGE_MTMASK) | _PAGE_IO)
 #define PAGE_KERNEL_IO		__pgprot(_PAGE_IOREMAP)
 

arch/riscv/include/asm/rwonce.h

@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef __ASM_RWONCE_H
+#define __ASM_RWONCE_H
+
+#include <linux/compiler_types.h>
+#include <asm/alternative-macros.h>
+#include <asm/vendorid_list.h>
+#include <asm/errata_list_vendors.h>
+
+#if defined(CONFIG_ERRATA_THEAD_WRITE_ONCE) && !defined(NO_ALTERNATIVE)
+
+#define write_once_fence()				\
+do {							\
+	asm volatile(ALTERNATIVE(			\
+		"nop",					\
+		"fence w, o",				\
+		THEAD_VENDOR_ID,			\
+		ERRATA_THEAD_WRITE_ONCE,		\
+		CONFIG_ERRATA_THEAD_WRITE_ONCE)		\
+		: : : "memory");			\
+} while (0)
+
+#define __WRITE_ONCE(x, val)				\
+do {							\
+	*(volatile typeof(x) *)&(x) = (val);		\
+	write_once_fence();				\
+} while (0)
+
+#endif /* defined(CONFIG_ERRATA_THEAD_WRITE_ONCE) && !defined(NO_ALTERNATIVE) */
+
+#include <asm-generic/rwonce.h>
+
+#endif	/* __ASM_RWONCE_H */

arch/riscv/kernel/cpu-hotplug.c

@@ -54,6 +54,7 @@ void arch_cpuhp_cleanup_dead_cpu(unsigned int cpu)
 
 	pr_notice("CPU%u: off\n", cpu);
 
+	clear_tasks_mm_cpumask(cpu);
 	/* Verify from the firmware if the cpu is really stopped*/
 	if (cpu_ops->cpu_is_stopped)
 		ret = cpu_ops->cpu_is_stopped(cpu);

arch/riscv/kernel/module-sections.c

@@ -119,6 +119,7 @@ int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
 	unsigned int num_plts = 0;
 	unsigned int num_gots = 0;
 	Elf_Rela *scratch = NULL;
+	Elf_Rela *new_scratch;
 	size_t scratch_size = 0;
 	int i;
 
@@ -168,9 +169,12 @@ int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
 		scratch_size_needed = (num_scratch_relas + num_relas) * sizeof(*scratch);
 		if (scratch_size_needed > scratch_size) {
 			scratch_size = scratch_size_needed;
-			scratch = kvrealloc(scratch, scratch_size, GFP_KERNEL);
-			if (!scratch)
+			new_scratch = kvrealloc(scratch, scratch_size, GFP_KERNEL);
+			if (!new_scratch) {
+				kvfree(scratch);
 				return -ENOMEM;
+			}
+			scratch = new_scratch;
 		}
 
 		for (size_t j = 0; j < num_relas; j++)

arch/riscv/kernel/setup.c

@@ -330,11 +330,14 @@ void __init setup_arch(char **cmdline_p)
 	/* Parse the ACPI tables for possible boot-time configuration */
 	acpi_boot_table_init();
 
+	if (acpi_disabled) {
 #if IS_ENABLED(CONFIG_BUILTIN_DTB)
-	unflatten_and_copy_device_tree();
+		unflatten_and_copy_device_tree();
 #else
-	unflatten_device_tree();
+		unflatten_device_tree();
 #endif
+	}
+
 	misc_mem_init();
 
 	init_resources();

arch/riscv/kernel/stacktrace.c

@@ -16,6 +16,22 @@
 
 #ifdef CONFIG_FRAME_POINTER
 
+/*
+ * This disables KASAN checking when reading a value from another task's stack,
+ * since the other task could be running on another CPU and could have poisoned
+ * the stack in the meantime.
+ */
+#define READ_ONCE_TASK_STACK(task, x)			\
+({							\
+	unsigned long val;				\
+	unsigned long addr = x;				\
+	if ((task) == current)				\
+		val = READ_ONCE(addr);			\
+	else						\
+		val = READ_ONCE_NOCHECK(addr);		\
+	val;						\
+})
+
 extern asmlinkage void handle_exception(void);
 extern unsigned long ret_from_exception_end;
 
@@ -69,8 +85,9 @@ void notrace walk_stackframe(struct task_struct *task, struct pt_regs *regs,
 			fp = frame->ra;
 			pc = regs->ra;
 		} else {
-			fp = frame->fp;
-			pc = ftrace_graph_ret_addr(current, &graph_idx, frame->ra,
+			fp = READ_ONCE_TASK_STACK(task, frame->fp);
+			pc = READ_ONCE_TASK_STACK(task, frame->ra);
+			pc = ftrace_graph_ret_addr(current, &graph_idx, pc,
 						   &frame->ra);
 			if (pc >= (unsigned long)handle_exception &&
 			    pc < (unsigned long)&ret_from_exception_end) {