For some devices like cameras the system needs to know where they are mounted. ACPI has a property for this purpose, which is parsed by acpi_get_physical_device_location(): https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/06_Device_Configuration/Device_Configuration.html#pld-physical-location-of-device In DT we have similar property for video-interface-devices called orientation, but it is limited to the requirements of video devices: Documentation/devicetree/bindings/media/video-interface-devices.yaml Add a new property for usb-devices that matches the behavior of ACPI's _PLD. Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> --- Documentation/devicetree/bindings/usb/usb-device.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/usb-device.yaml b/Documentation/devicetree/bindings/usb/usb-device.yaml index da890ee60ce6..1ce79c1c3b31 100644 --- a/Documentation/devicetree/bindings/usb/usb-device.yaml +++ b/Documentation/devicetree/bindings/usb/usb-device.yaml @@ -42,6 +42,20 @@ properties: port to which this device is attached. The range is 1-255. maxItems: 1 + panel-location: + description: Describes which panel surface of the system's housing the USB + device resides on. It has the same meaning as the `ACPI`'s `_PLD` Panel + object. + $ref: /schemas/types.yaml#/definitions/uint32 + enum: + - 0 # Top. + - 1 # Bottom. + - 2 # Left. + - 3 # Right. + - 4 # Front (aka as User Facing). + - 5 # Back (aka as World Facing). + - 6 # Unknown. + "#address-cells": description: should be 1 for hub nodes with device nodes, should be 2 for device nodes with interface nodes. --- base-commit: eefa7a9c069908412f8f5d15833901d1b46ae1b2 change-id: 20241212-usb-orientation-8e3717ebb02a Best regards, -- Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
