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

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

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-txid
+            - 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>;
+    };

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/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/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>
-
+#include <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_NUMBER 3
-#endif
 
 #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/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/sys_riscv.c

@@ -10,7 +10,7 @@
 
 static long riscv_sys_mmap(unsigned long addr, unsigned long len,
 			   unsigned long prot, unsigned long flags,
-			   unsigned long fd, off_t offset,
+			   unsigned long fd, unsigned long offset,
 			   unsigned long page_shift_offset)
 {
 	if (unlikely(offset & (~PAGE_MASK >> page_shift_offset)))

drivers/gpu/drm/ttm/ttm_bo_util.c

@@ -307,6 +307,14 @@ pgprot_t ttm_io_prot(struct ttm_buffer_object *bo, struct ttm_resource *res,
 		caching = res->bus.caching;
 	}
 
+#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
+	/* Downgrade cached mapping for non-snooping devices */
+	if (!bo->bdev->dma_coherent && caching == ttm_cached)
+		caching = ttm_write_combined;
+#endif
+
 	return ttm_prot_from_caching(caching, tmp);
 }
 EXPORT_SYMBOL(ttm_io_prot);

drivers/gpu/drm/ttm/ttm_device.c

@@ -246,6 +246,12 @@ int ttm_device_init(struct ttm_device *bdev, const struct ttm_device_funcs *func
 	list_add_tail(&bdev->device_list, &glob->device_list);
 	mutex_unlock(&ttm_global_mutex);
 
+#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
+	bdev->dma_coherent = dev->dma_coherent;
+#endif
+
 	return 0;
 }
 EXPORT_SYMBOL(ttm_device_init);

drivers/gpu/drm/ttm/ttm_module.c

@@ -74,7 +74,8 @@ pgprot_t ttm_prot_from_caching(enum ttm_caching caching, pgprot_t tmp)
 #endif /* CONFIG_UML */
 #endif /* __i386__ || __x86_64__ */
 #if defined(__ia64__) || defined(__arm__) || defined(__aarch64__) || \
-	defined(__powerpc__) || defined(__mips__) || defined(__loongarch__)
+	defined(__powerpc__) || defined(__mips__) || defined(__loongarch__) || \
+	defined(__riscv)
 	if (caching == ttm_write_combined)
 		tmp = pgprot_writecombine(tmp);
 	else

drivers/gpu/drm/ttm/ttm_tt.c

@@ -154,6 +154,14 @@ static void ttm_tt_init_fields(struct ttm_tt *ttm,
 			       enum ttm_caching caching,
 			       unsigned long extra_pages)
 {
+#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
+	/* Downgrade cached mapping for non-snooping devices */
+	if (!bo->bdev->dma_coherent && caching == ttm_cached)
+		caching = ttm_write_combined;
+#endif
+
 	ttm->num_pages = (PAGE_ALIGN(bo->base.size) >> PAGE_SHIFT) + extra_pages;
 	ttm->page_flags = page_flags;
 	ttm->dma_address = NULL;

drivers/gpu/drm/xe/xe_pci.c

@@ -242,7 +242,7 @@ static const struct xe_device_desc dg1_desc = {
 	.has_gsc_nvm = 1,
 	.has_heci_gscfi = 1,
 	.max_gt_per_tile = 1,
-	.require_force_probe = true,
+	.require_force_probe = false,
 };
 
 static const u16 dg2_g10_ids[] = { INTEL_DG2_G10_IDS(NOP), INTEL_ATS_M150_IDS(NOP), 0 };
@@ -266,7 +266,7 @@ static const struct xe_device_desc ats_m_desc = {
 	.pre_gmdid_media_ip = &media_ip_xehpm,
 	.dma_mask_size = 46,
 	.max_gt_per_tile = 1,
-	.require_force_probe = true,
+	.require_force_probe = false,
 
 	DG2_FEATURES,
 	.has_display = false,
@@ -277,7 +277,7 @@ static const struct xe_device_desc dg2_desc = {
 	.pre_gmdid_media_ip = &media_ip_xehpm,
 	.dma_mask_size = 46,
 	.max_gt_per_tile = 1,
-	.require_force_probe = true,
+	.require_force_probe = false,
 
 	DG2_FEATURES,
 	.has_display = true,
@@ -295,7 +295,7 @@ static const __maybe_unused struct xe_device_desc pvc_desc = {
 	.has_heci_gscfi = 1,
 	.max_gt_per_tile = 1,
 	.max_remote_tiles = 1,
-	.require_force_probe = true,
+	.require_force_probe = false,
 	.has_mbx_power_limits = false,
 };
 

drivers/irqchip/irq-sg2042-msi.c

@@ -30,6 +30,7 @@ struct sg204x_msi_chip_info {
  * @doorbell_addr:	see TRM, 10.1.32, GP_INTR0_SET
  * @irq_first:		First vectors number that MSIs starts
  * @num_irqs:		Number of vectors for MSIs
+ * @irq_type:		IRQ type for MSIs
  * @msi_map:		mapping for allocated MSI vectors.
  * @msi_map_lock:	Lock for msi_map
  * @chip_info:		chip specific infomations
@@ -41,6 +42,7 @@ struct sg204x_msi_chipdata {
 
 	u32					irq_first;
 	u32					num_irqs;
+	unsigned int				irq_type;
 
 	unsigned long				*msi_map;
 	struct mutex				msi_map_lock;
@@ -137,14 +139,14 @@ static int sg204x_msi_parent_domain_alloc(struct irq_domain *domain, unsigned in
 	fwspec.fwnode = domain->parent->fwnode;
 	fwspec.param_count = 2;
 	fwspec.param[0] = data->irq_first + hwirq;
-	fwspec.param[1] = IRQ_TYPE_EDGE_RISING;
+	fwspec.param[1] = data->irq_type;
 
 	ret = irq_domain_alloc_irqs_parent(domain, virq, 1, &fwspec);
 	if (ret)
 		return ret;
 
 	d = irq_domain_get_irq_data(domain->parent, virq);
-	return d->chip->irq_set_type(d, IRQ_TYPE_EDGE_RISING);
+	return d->chip->irq_set_type(d, data->irq_type);
 }
 
 static int sg204x_msi_middle_domain_alloc(struct irq_domain *domain, unsigned int virq,
@@ -212,6 +214,7 @@ static const struct msi_parent_ops sg2042_msi_parent_ops = {
 				   MSI_FLAG_PCI_MSI_STARTUP_PARENT)
 
 #define SG2044_MSI_FLAGS_SUPPORTED (MSI_GENERIC_FLAGS_MASK |		\
+				    MSI_FLAG_MULTI_PCI_MSI |		\
 				    MSI_FLAG_PCI_MSIX)
 
 static const struct msi_parent_ops sg2044_msi_parent_ops = {
@@ -297,6 +300,7 @@ static int sg2042_msi_probe(struct platform_device *pdev)
 	}
 
 	data->irq_first = (u32)args.args[0];
+	data->irq_type = (unsigned int)args.args[1];
 	data->num_irqs = (u32)args.args[args.nargs - 1];
 
 	mutex_init(&data->msi_map_lock);

drivers/irqchip/irq-sifive-plic.c

@@ -179,12 +179,14 @@ static int plic_set_affinity(struct irq_data *d,
 	if (cpu >= nr_cpu_ids)
 		return -EINVAL;
 
-	plic_irq_disable(d);
+	/* Invalidate the original routing entry */
+	plic_irq_toggle(irq_data_get_effective_affinity_mask(d), d, 0);
 
 	irq_data_update_effective_affinity(d, cpumask_of(cpu));
 
+	/* Setting the new routing entry if irq is enabled */
 	if (!irqd_irq_disabled(d))
-		plic_irq_enable(d);
+		plic_irq_toggle(irq_data_get_effective_affinity_mask(d), d, 1);
 
 	return IRQ_SET_MASK_OK_DONE;
 }

drivers/net/ethernet/stmicro/stmmac/dwmac-sophgo.c

@@ -7,11 +7,16 @@
 
 #include <linux/clk.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 
 #include "stmmac_platform.h"
 
+struct sophgo_dwmac_data {
+	bool has_internal_rx_delay;
+};
+
 static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,
 				    struct plat_stmmacenet_data *plat_dat,
 				    struct stmmac_resources *stmmac_res)
@@ -32,6 +37,7 @@ static int sophgo_sg2044_dwmac_init(struct platform_device *pdev,
 static int sophgo_dwmac_probe(struct platform_device *pdev)
 {
 	struct plat_stmmacenet_data *plat_dat;
+	const struct sophgo_dwmac_data *data;
 	struct stmmac_resources stmmac_res;
 	struct device *dev = &pdev->dev;
 	int ret;
@@ -50,11 +56,23 @@ static int sophgo_dwmac_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
+	data = device_get_match_data(&pdev->dev);
+	if (data && data->has_internal_rx_delay) {
+		plat_dat->phy_interface = phy_fix_phy_mode_for_mac_delays(plat_dat->phy_interface,
+									  false, true);
+		if (plat_dat->phy_interface == PHY_INTERFACE_MODE_NA)
+			return -EINVAL;
+	}
+
 	return stmmac_dvr_probe(dev, plat_dat, &stmmac_res);
 }
 
+static const struct sophgo_dwmac_data sg2042_dwmac_data = {
+	.has_internal_rx_delay = true,
+};
+
 static const struct of_device_id sophgo_dwmac_match[] = {
-	{ .compatible = "sophgo,sg2042-dwmac" },
+	{ .compatible = "sophgo,sg2042-dwmac", .data = &sg2042_dwmac_data },
 	{ .compatible = "sophgo,sg2044-dwmac" },
 	{ /* sentinel */ }
 };

drivers/net/phy/phy-core.c

@@ -101,6 +101,49 @@ const char *phy_rate_matching_to_str(int rate_matching)
 }
 EXPORT_SYMBOL_GPL(phy_rate_matching_to_str);
 
+/**
+ * phy_fix_phy_mode_for_mac_delays - Convenience function for fixing PHY
+ * mode based on whether mac adds internal delay
+ *
+ * @interface: The current interface mode of the port
+ * @mac_txid: True if the mac adds internal tx delay
+ * @mac_rxid: True if the mac adds internal rx delay
+ *
+ * Return fixed PHY mode, or PHY_INTERFACE_MODE_NA if the interface can
+ * not apply the internal delay
+ */
+phy_interface_t phy_fix_phy_mode_for_mac_delays(phy_interface_t interface,
+						bool mac_txid, bool mac_rxid)
+{
+	if (!phy_interface_mode_is_rgmii(interface))
+		return interface;
+
+	if (mac_txid && mac_rxid) {
+		if (interface == PHY_INTERFACE_MODE_RGMII_ID)
+			return PHY_INTERFACE_MODE_RGMII;
+		return PHY_INTERFACE_MODE_NA;
+	}
+
+	if (mac_txid) {
+		if (interface == PHY_INTERFACE_MODE_RGMII_ID)
+			return PHY_INTERFACE_MODE_RGMII_RXID;
+		if (interface == PHY_INTERFACE_MODE_RGMII_TXID)
+			return PHY_INTERFACE_MODE_RGMII;
+		return PHY_INTERFACE_MODE_NA;
+	}
+
+	if (mac_rxid) {
+		if (interface == PHY_INTERFACE_MODE_RGMII_ID)
+			return PHY_INTERFACE_MODE_RGMII_TXID;
+		if (interface == PHY_INTERFACE_MODE_RGMII_RXID)
+			return PHY_INTERFACE_MODE_RGMII;
+		return PHY_INTERFACE_MODE_NA;
+	}
+
+	return interface;
+}
+EXPORT_SYMBOL_GPL(phy_fix_phy_mode_for_mac_delays);
+
 /**
  * phy_interface_num_ports - Return the number of links that can be carried by
  *			     a given MAC-PHY physical link. Returns 0 if this is

drivers/nvmem/Kconfig

@@ -335,6 +335,18 @@ config NVMEM_SNVS_LPGPR
 	  This driver can also be built as a module. If so, the module
 	  will be called nvmem-snvs-lpgpr.
 
+config NVMEM_SOPHGO_EFUSE
+	tristate "Sophgo eFuse support"
+	depends on ARCH_SOPHGO || COMPILE_TEST
+	default ARCH_SOPHGO
+	help
+	  Say y here to enable support for reading eFuses on Sophgo SoCs
+	  such as the CV1800B. These are e.g. used to store factory programmed
+	  calibration data required for the builtin ethernet PHY.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called nvmem-sophgo-efuse.
+
 config NVMEM_SPMI_SDAM
 	tristate "SPMI SDAM Support"
 	depends on SPMI

drivers/nvmem/Makefile

@@ -68,6 +68,8 @@ obj-$(CONFIG_NVMEM_SC27XX_EFUSE)	+= nvmem-sc27xx-efuse.o
 nvmem-sc27xx-efuse-y			:= sc27xx-efuse.o
 obj-$(CONFIG_NVMEM_SNVS_LPGPR)		+= nvmem_snvs_lpgpr.o
 nvmem_snvs_lpgpr-y			:= snvs_lpgpr.o
+obj-$(CONFIG_NVMEM_SOPHGO_EFUSE)	+= nvmem-sophgo-efuse.o
+nvmem-sophgo-efuse-y			:= sophgo-efuse.o
 obj-$(CONFIG_NVMEM_SPMI_SDAM)		+= nvmem_qcom-spmi-sdam.o
 nvmem_qcom-spmi-sdam-y			+= qcom-spmi-sdam.o
 obj-$(CONFIG_NVMEM_SPRD_EFUSE)		+= nvmem_sprd_efuse.o

drivers/nvmem/sophgo-efuse.c

@@ -0,0 +1,176 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Sophgo SoC eFuse driver
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/cleanup.h>
+#include <linux/iopoll.h>
+#include <linux/math.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/nvmem-provider.h>
+#include <linux/platform_device.h>
+
+#define SG2044_EFUSE_CONTENT_SIZE		0x400
+
+#define SG2044_EFUSE_MD				0x000
+#define SG2044_EFUSE_ADR			0x004
+#define SG2044_EFUSE_RD_DATA			0x00c
+
+#define SG2044_EFUSE_MODE			GENMASK(1, 0)
+#define SG2044_EFUSE_MODE_READ			2
+
+#define SG2044_EFUSE_BOOT_DONE			BIT(7)
+#define SG2044_BOOT_TIMEOUT			10000
+
+#define SG2044_EFUSE_ADR_ADDR			GENMASK(7, 0)
+
+#define SG2044_EFUSE_ALIGN			4
+
+struct sophgo_efuses {
+	void __iomem *base;
+	struct clk_bulk_data *clks;
+	int num_clks;
+	struct mutex mutex;
+};
+
+static int sg2044_efuse_wait_mode(struct sophgo_efuses *efuse)
+{
+	u32 value;
+
+	return readl_poll_timeout(efuse->base + SG2044_EFUSE_MD, value,
+				  FIELD_GET(SG2044_EFUSE_MODE, value) == 0,
+				  1, SG2044_BOOT_TIMEOUT);
+}
+
+static int sg2044_efuse_set_mode(struct sophgo_efuses *efuse, int mode)
+{
+	u32 val = readl(efuse->base + SG2044_EFUSE_MD);
+
+	val &= ~SG2044_EFUSE_MODE;
+	val |= FIELD_PREP(SG2044_EFUSE_MODE, mode);
+
+	writel(val, efuse->base + SG2044_EFUSE_MD);
+
+	return sg2044_efuse_wait_mode(efuse);
+}
+
+static u32 sg2044_efuses_read_strip(struct sophgo_efuses *efuse,
+				    unsigned int offset, u32 *strip)
+{
+	u32 val = FIELD_PREP(SG2044_EFUSE_ADR_ADDR, offset);
+	int ret;
+
+	guard(mutex)(&efuse->mutex);
+
+	writel(val, efuse->base + SG2044_EFUSE_ADR);
+
+	ret = sg2044_efuse_set_mode(efuse, SG2044_EFUSE_MODE_READ);
+	if (ret < 0)
+		return ret;
+
+	*strip = readl(efuse->base + SG2044_EFUSE_RD_DATA);
+
+	return 0;
+}
+
+static int sg2044_efuses_read(void *context, unsigned int offset, void *val,
+			      size_t bytes)
+{
+	struct sophgo_efuses *efuse = context;
+	unsigned int start, start_offset, end, i;
+	u32 value;
+	u8 *buf;
+	int ret;
+
+	start = rounddown(offset, SG2044_EFUSE_ALIGN);
+	end = roundup(offset + bytes, SG2044_EFUSE_ALIGN);
+	start_offset = offset - start;
+
+	start /= SG2044_EFUSE_ALIGN;
+	end /= SG2044_EFUSE_ALIGN;
+
+	ret = readl_poll_timeout(efuse->base + SG2044_EFUSE_MD, value,
+				 (value & SG2044_EFUSE_BOOT_DONE),
+				 1, SG2044_BOOT_TIMEOUT);
+	if (ret < 0)
+		return ret;
+
+	buf = kzalloc(end - start, GFP_KERNEL);
+	if (!buf)
+		return -ENOMEM;
+
+	for (i = start; i < end; i++) {
+		ret = sg2044_efuses_read_strip(efuse, i, &value);
+		if (ret)
+			goto failed;
+
+		memcpy(&buf[(i - start) * 4], &value, SG2044_EFUSE_ALIGN);
+	}
+
+	memcpy(val, buf + start_offset, bytes);
+
+failed:
+	kfree(buf);
+
+	return ret;
+}
+
+static int sophgo_efuses_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct sophgo_efuses *efuse;
+	struct nvmem_config config = {
+		.dev = &pdev->dev,
+		.add_legacy_fixed_of_cells = true,
+		.read_only = true,
+		.reg_read = sg2044_efuses_read,
+		.stride = 1,
+		.word_size = 1,
+		.name = "sophgo-efuse",
+		.id = NVMEM_DEVID_AUTO,
+		.root_only = true,
+	};
+
+	efuse = devm_kzalloc(dev, sizeof(*efuse), GFP_KERNEL);
+	if (!efuse)
+		return -ENOMEM;
+
+	efuse->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(efuse->base))
+		return PTR_ERR(efuse->base);
+
+	efuse->num_clks = devm_clk_bulk_get_all_enabled(&pdev->dev, &efuse->clks);
+	if (efuse->num_clks < 0)
+		return dev_err_probe(dev, efuse->num_clks, "failed to get clocks\n");
+
+	config.priv = efuse;
+	config.size = SG2044_EFUSE_CONTENT_SIZE;
+
+	return PTR_ERR_OR_ZERO(devm_nvmem_register(config.dev, &config));
+}
+
+static const struct of_device_id sophgo_efuses_of_match[] = {
+	{ .compatible = "sophgo,sg2044-efuse", },
+	{}
+};
+
+MODULE_DEVICE_TABLE(of, sophgo_efuses_of_match);
+
+static struct platform_driver sophgo_efuses_driver = {
+	.driver = {
+		.name = "sophgo_efuse",
+		.of_match_table = sophgo_efuses_of_match,
+	},
+	.probe = sophgo_efuses_probe,
+};
+
+module_platform_driver(sophgo_efuses_driver);
+
+MODULE_AUTHOR("Inochi Amaoto <inochiama@gmail.com>");
+MODULE_DESCRIPTION("Sophgo efuse driver");
+MODULE_LICENSE("GPL");

drivers/pci/controller/cadence/Kconfig

@@ -42,6 +42,15 @@ config PCIE_CADENCE_PLAT_EP
 	  endpoint mode. This PCIe controller may be embedded into many
 	  different vendors SoCs.
 
+config PCIE_SG2042_HOST
+	tristate "Sophgo SG2042 PCIe controller (host mode)"
+	depends on OF && (ARCH_SOPHGO || COMPILE_TEST)
+	select PCIE_CADENCE_HOST
+	help
+	  Say Y here if you want to support the Sophgo SG2042 PCIe platform
+	  controller in host mode. Sophgo SG2042 PCIe controller uses Cadence
+	  PCIe core.
+
 config PCI_J721E
 	tristate
 	select PCIE_CADENCE_HOST if PCI_J721E_HOST != n
@@ -67,4 +76,5 @@ config PCI_J721E_EP
 	  Say Y here if you want to support the TI J721E PCIe platform
 	  controller in endpoint mode. TI J721E PCIe controller uses Cadence PCIe
 	  core.
+
 endmenu

drivers/pci/controller/cadence/Makefile

@@ -4,3 +4,4 @@ obj-$(CONFIG_PCIE_CADENCE_HOST) += pcie-cadence-host.o
 obj-$(CONFIG_PCIE_CADENCE_EP) += pcie-cadence-ep.o
 obj-$(CONFIG_PCIE_CADENCE_PLAT) += pcie-cadence-plat.o
 obj-$(CONFIG_PCI_J721E) += pci-j721e.o
+obj-$(CONFIG_PCIE_SG2042_HOST) += pcie-sg2042.o

drivers/pci/controller/cadence/pcie-cadence-host.c

@@ -531,7 +531,7 @@ static int cdns_pcie_host_init_address_translation(struct cdns_pcie_rc *rc)
 	cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_PCI_ADDR1(0), addr1);
 	cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(0), desc1);
 
-	if (pcie->ops->cpu_addr_fixup)
+	if (pcie->ops && pcie->ops->cpu_addr_fixup)
 		cpu_addr = pcie->ops->cpu_addr_fixup(pcie, cpu_addr);
 
 	addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(12) |

drivers/pci/controller/cadence/pcie-cadence.c

@@ -92,7 +92,7 @@ void cdns_pcie_set_outbound_region(struct cdns_pcie *pcie, u8 busnr, u8 fn,
 	cdns_pcie_writel(pcie, CDNS_PCIE_AT_OB_REGION_DESC1(r), desc1);
 
 	/* Set the CPU address */
-	if (pcie->ops->cpu_addr_fixup)
+	if (pcie->ops && pcie->ops->cpu_addr_fixup)
 		cpu_addr = pcie->ops->cpu_addr_fixup(pcie, cpu_addr);
 
 	addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(nbits) |
@@ -123,7 +123,7 @@ void cdns_pcie_set_outbound_region_for_normal_msg(struct cdns_pcie *pcie,
 	}
 
 	/* Set the CPU address */
-	if (pcie->ops->cpu_addr_fixup)
+	if (pcie->ops && pcie->ops->cpu_addr_fixup)
 		cpu_addr = pcie->ops->cpu_addr_fixup(pcie, cpu_addr);
 
 	addr0 = CDNS_PCIE_AT_OB_REGION_CPU_ADDR0_NBITS(17) |

drivers/pci/controller/cadence/pcie-cadence.h

@@ -468,7 +468,7 @@ static inline u32 cdns_pcie_ep_fn_readl(struct cdns_pcie *pcie, u8 fn, u32 reg)
 
 static inline int cdns_pcie_start_link(struct cdns_pcie *pcie)
 {
-	if (pcie->ops->start_link)
+	if (pcie->ops && pcie->ops->start_link)
 		return pcie->ops->start_link(pcie);
 
 	return 0;
@@ -476,13 +476,13 @@ static inline int cdns_pcie_start_link(struct cdns_pcie *pcie)
 
 static inline void cdns_pcie_stop_link(struct cdns_pcie *pcie)
 {
-	if (pcie->ops->stop_link)
+	if (pcie->ops && pcie->ops->stop_link)
 		pcie->ops->stop_link(pcie);
 }
 
 static inline bool cdns_pcie_link_up(struct cdns_pcie *pcie)
 {
-	if (pcie->ops->link_up)
+	if (pcie->ops && pcie->ops->link_up)
 		return pcie->ops->link_up(pcie);
 
 	return true;

drivers/pci/controller/cadence/pcie-sg2042.c

@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * pcie-sg2042 - PCIe controller driver for Sophgo SG2042 SoC
+ *
+ * Copyright (C) 2025 Sophgo Technology Inc.
+ * Copyright (C) 2025 Chen Wang <unicorn_wang@outlook.com>
+ */
+
+#include <linux/mod_devicetable.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+
+#include "pcie-cadence.h"
+
+/*
+ * SG2042 only supports 4-byte aligned access, so for the rootbus (i.e. to
+ * read/write the Root Port itself, read32/write32 is required. For
+ * non-rootbus (i.e. to read/write the PCIe peripheral registers, supports
+ * 1/2/4 byte aligned access, so directly using read/write should be fine.
+ */
+
+static struct pci_ops sg2042_pcie_root_ops = {
+	.map_bus	= cdns_pci_map_bus,
+	.read		= pci_generic_config_read32,
+	.write		= pci_generic_config_write32,
+};
+
+static struct pci_ops sg2042_pcie_child_ops = {
+	.map_bus	= cdns_pci_map_bus,
+	.read		= pci_generic_config_read,
+	.write		= pci_generic_config_write,
+};
+
+static int sg2042_pcie_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct pci_host_bridge *bridge;
+	struct cdns_pcie *pcie;
+	struct cdns_pcie_rc *rc;
+	int ret;
+
+	bridge = devm_pci_alloc_host_bridge(dev, sizeof(*rc));
+	if (!bridge)
+		return dev_err_probe(dev, -ENOMEM, "Failed to alloc host bridge!\n");
+
+	bridge->ops = &sg2042_pcie_root_ops;
+	bridge->child_ops = &sg2042_pcie_child_ops;
+
+	rc = pci_host_bridge_priv(bridge);
+	pcie = &rc->pcie;
+	pcie->dev = dev;
+
+	platform_set_drvdata(pdev, pcie);
+
+	pm_runtime_set_active(dev);
+	pm_runtime_no_callbacks(dev);
+	devm_pm_runtime_enable(dev);
+
+	ret = cdns_pcie_init_phy(dev, pcie);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init phy!\n");
+
+	ret = cdns_pcie_host_setup(rc);
+	if (ret) {
+		dev_err_probe(dev, ret, "Failed to setup host!\n");
+		cdns_pcie_disable_phy(pcie);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void sg2042_pcie_remove(struct platform_device *pdev)
+{
+	struct cdns_pcie *pcie = platform_get_drvdata(pdev);
+	struct device *dev = &pdev->dev;
+	struct cdns_pcie_rc *rc;
+
+	rc = container_of(pcie, struct cdns_pcie_rc, pcie);
+	cdns_pcie_host_disable(rc);
+
+	cdns_pcie_disable_phy(pcie);
+
+	pm_runtime_disable(dev);
+}
+
+static int sg2042_pcie_suspend_noirq(struct device *dev)
+{
+	struct cdns_pcie *pcie = dev_get_drvdata(dev);
+
+	cdns_pcie_disable_phy(pcie);
+
+	return 0;
+}
+
+static int sg2042_pcie_resume_noirq(struct device *dev)
+{
+	struct cdns_pcie *pcie = dev_get_drvdata(dev);
+	int ret;
+
+	ret = cdns_pcie_enable_phy(pcie);
+	if (ret) {
+		dev_err(dev, "failed to enable PHY\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static DEFINE_NOIRQ_DEV_PM_OPS(sg2042_pcie_pm_ops,
+			       sg2042_pcie_suspend_noirq,
+			       sg2042_pcie_resume_noirq);
+
+static const struct of_device_id sg2042_pcie_of_match[] = {
+	{ .compatible = "sophgo,sg2042-pcie-host" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, sg2042_pcie_of_match);
+
+static struct platform_driver sg2042_pcie_driver = {
+	.driver = {
+		.name		= "sg2042-pcie",
+		.of_match_table	= sg2042_pcie_of_match,
+		.pm		= pm_sleep_ptr(&sg2042_pcie_pm_ops),
+	},
+	.probe		= sg2042_pcie_probe,
+	.remove		= sg2042_pcie_remove,
+};
+module_platform_driver(sg2042_pcie_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("PCIe controller driver for SG2042 SoCs");
+MODULE_AUTHOR("Chen Wang <unicorn_wang@outlook.com>");

drivers/pci/quirks.c

@@ -6338,3 +6338,26 @@ static void pci_mask_replay_timer_timeout(struct pci_dev *pdev)
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_GLI, 0x9750, pci_mask_replay_timer_timeout);
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_GLI, 0x9755, pci_mask_replay_timer_timeout);
 #endif
+
+/*
+ * PCI switches integrated into Intel Arc GPUs have BAR0 that prevents
+ * resizing the BARs of the GPU device due to that bridge BAR0 pinning the
+ * bridge window it's under in place. Nothing in pcieport requires that
+ * BAR0.
+ *
+ * Release and disable BAR0 permanently by clearing its flags to prevent
+ * anything from assigning it again.
+ */
+static void pci_release_bar0(struct pci_dev *pdev)
+{
+	struct resource *res = pci_resource_n(pdev, 0);
+
+	if (!res->parent)
+		return;
+
+	pci_release_resource(pdev, 0);
+	res->flags = 0;
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, 0x4fa0, pci_release_bar0);
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, 0x4fa1, pci_release_bar0);
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_INTEL, 0xe2ff, pci_release_bar0);

include/asm-generic/rwonce.h

@@ -50,10 +50,12 @@
 	__READ_ONCE(x);							\
 })
 
+#ifndef __WRITE_ONCE
 #define __WRITE_ONCE(x, val)						\
 do {									\
 	*(volatile typeof(x) *)&(x) = (val);				\
 } while (0)
+#endif
 
 #define WRITE_ONCE(x, val)						\
 do {									\

include/drm/ttm/ttm_caching.h

@@ -47,7 +47,8 @@ enum ttm_caching {
 
 	/**
 	 * @ttm_cached: Fully cached like normal system memory, requires that
-	 * devices snoop the CPU cache on accesses.
+	 * devices snoop the CPU cache on accesses. Downgraded to
+	 * ttm_write_combined when the snooping capaiblity is missing.
 	 */
 	ttm_cached
 };

include/drm/ttm/ttm_device.h

@@ -225,6 +225,15 @@ struct ttm_device {
 	 */
 	const struct ttm_device_funcs *funcs;
 
+#if defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_DEVICE) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU) || \
+	defined(CONFIG_ARCH_HAS_SYNC_DMA_FOR_CPU_ALL)
+	/**
+	 * @dma_coherent: if the device backed is dma-coherent.
+	 */
+	bool dma_coherent;
+#endif
+
 	/**
 	 * @sysman: Resource manager for the system domain.
 	 * Access via ttm_manager_type.

include/linux/phy.h

@@ -1795,6 +1795,9 @@ static inline bool phy_is_pseudo_fixed_link(struct phy_device *phydev)
 	return phydev->is_pseudo_fixed_link;
 }
 
+phy_interface_t phy_fix_phy_mode_for_mac_delays(phy_interface_t interface,
+						bool mac_txid, bool mac_rxid);
+
 int phy_save_page(struct phy_device *phydev);
 int phy_select_page(struct phy_device *phydev, int page);
 int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);

tools/perf/pmu-events/arch/riscv/mapfile.csv

@@ -20,5 +20,6 @@
 0x489-0x8000000000000008-0x[[:xdigit:]]+,v1,sifive/p550,core
 0x489-0x8000000000000[1-6]08-0x[9b][[:xdigit:]]+,v1,sifive/p650,core
 0x5b7-0x0-0x0,v1,thead/c900-legacy,core
+0x5b7-0x80000000090c0d00-0x2047000,v1,thead/c900-legacy,core
 0x67e-0x80000000db0000[89]0-0x[[:xdigit:]]+,v1,starfive/dubhe-80,core
 0x31e-0x8000000000008a45-0x[[:xdigit:]]+,v1,andes/ax45,core