forked from OERV-BSP/u-boot
9773b27e12
Quentin Schulz <foss+uboot@0leil.net> says: Due to updates to the Device Tree (migrating to onboard USB hub nodes instead of (badly) hacking things with a gpio regulator that doesn't actually work properly), we now need to enable the onboard USB hub driver in U-Boot. This anticipates upcoming breakage when 6.16 DT will be merged into U-Boot's dts/upstream. The series can be applied as is before v6.16 DT is merged or only the defconfig changes after 6.16 DT has been merged. The last two patches are simply to avoid probing devices that aren't actually routed on RK3399 Puma, which is nice to have but doesn't fix anything. Note that this depends on the following series: https://lore.kernel.org/u-boot/20250722-usb_onboard_hub_cypress_hx3-v4-0-91c3ee958c0e@thaumatec.com/ Link: https://lore.kernel.org/r/20250730-puma-usb-cypress-v1-0-b1c203c733f9@cherry.de
127 lines
3.9 KiB
YAML
127 lines
3.9 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/usb/usb-device.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Generic USB Device
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maintainers:
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- Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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description: |
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Usually, we only use device tree for hard wired USB device.
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The reference binding doc is from:
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http://www.devicetree.org/open-firmware/bindings/usb/usb-1_0.ps
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Four types of device-tree nodes are defined: "host-controller nodes"
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representing USB host controllers, "device nodes" representing USB devices,
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"interface nodes" representing USB interfaces and "combined nodes"
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representing simple USB devices.
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A combined node shall be used instead of a device node and an interface node
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for devices of class 0 or 9 (hub) with a single configuration and a single
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interface.
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A "hub node" is a combined node or an interface node that represents a USB
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hub.
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properties:
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compatible:
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contains:
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pattern: "^usb[0-9a-f]{1,4},[0-9a-f]{1,4}$"
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description: Device nodes or combined nodes.
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"usbVID,PID", where VID is the vendor id and PID the product id.
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The textual representation of VID and PID shall be in lower case
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hexadecimal with leading zeroes suppressed. The other compatible
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strings from the above standard binding could also be used,
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but a device adhering to this binding may leave out all except
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for "usbVID,PID".
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reg:
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description: the number of the USB hub port or the USB host-controller
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port to which this device is attached.
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items:
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- minimum: 1
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maximum: 255
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"#address-cells":
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description: should be 1 for hub nodes with device nodes,
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should be 2 for device nodes with interface nodes.
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enum: [1, 2]
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"#size-cells":
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const: 0
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patternProperties:
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"^interface@[0-9a-f]{1,2}(,[0-9a-f]{1,2})$":
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type: object
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description: USB interface nodes.
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The configuration component is not included in the textual
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representation of an interface-node unit address for configuration 1.
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properties:
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compatible:
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pattern: "^usbif[0-9a-f]{1,4},[0-9a-f]{1,4}.config[0-9a-f]{1,2}.[0-9a-f]{1,2}$"
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description: Interface nodes.
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"usbifVID,PID.configCN.IN", where VID is the vendor id, PID is
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the product id, CN is the configuration value and IN is the interface
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number. The textual representation of VID, PID, CN and IN shall be
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in lower case hexadecimal with leading zeroes suppressed.
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The other compatible strings from the above standard binding could
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also be used, but a device adhering to this binding may leave out
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all except for "usbifVID,PID.configCN.IN".
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reg:
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description: should be 2 cells long, the first cell represents
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the interface number and the second cell represents the
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configuration value.
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maxItems: 1
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required:
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- reg
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additionalProperties: true
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examples:
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# hub connected to port 1
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# device connected to port 2
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# device connected to port 3
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# interface 0 of configuration 1
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# interface 0 of configuration 2
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- |
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usb@11270000 {
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reg = <0x11270000 0x1000>;
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interrupts = <0x0 0x4e 0x0>;
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#address-cells = <1>;
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#size-cells = <0>;
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hub@1 {
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compatible = "usb5e3,608";
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reg = <1>;
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};
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device@2 {
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compatible = "usb123,4567";
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reg = <2>;
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};
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device@3 {
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compatible = "usb123,abcd";
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reg = <3>;
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#address-cells = <2>;
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#size-cells = <0>;
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interface@0 {
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compatible = "usbif123,abcd.config1.0";
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reg = <0 1>;
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};
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interface@0,2 {
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compatible = "usbif123,abcd.config2.0";
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reg = <0 2>;
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};
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};
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};
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