On Fri, 2 Jan 2026 at 13:47, Marek Vasut <[email protected]> wrote: > > On 1/2/26 1:56 PM, Heinrich Schuchardt wrote: > > USB keyboards are identified via a USB interface descriptor or via USB > > vendor and product IDs but never via the device-tree. > > > > Remove the device-tree match string. > The commit message is wrong, you can actually describe USB devices in > DT, see e.g. Linux: > > arch/arm/boot/dts/st/stm32mp15xx-dkx.dtsi: compatible = > "usb424,2514"; > > Documentation/devicetree/bindings/usb/microchip,usb2514.yaml: - > usb424,2514
I think there's nuance there because I think those USB hubs at times can have a GPIO to control power or something like that and hence the compat. > However, it seems this particular compatible string is ad-hoc and > unused. I wonder if this might break some users like RPi which supply > external DT and may depend on this support ? I've never seen the USB keyboards described in any of the RPi DTs
