[PATCH 1/1] usb_kbd: remove match string

[Peter Robinson]

On Fri, 2 Jan 2026 at 14:36, Marek Vasut <marek.vasut at mailbox.org> wrote:
>
> On 1/2/26 3:22 PM, Peter Robinson wrote:
> > On Fri, 2 Jan 2026 at 13:47, Marek Vasut <marek.vasut at mailbox.org> 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.
>
> I can imagine laptop keyboard can have the same thing, either for power
> regulator or for backlight under keys.

To date the backlights have been controlled under different
interfaces, at least on the Lenovo laptops, the Pinebooks (the only
laptops we have in U-Boot) don't have fancy interfaces like that and
the power buttons are some times different GPIO buttons.

I think, at least for what we support ATM, this patch should be fine.

> >> 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
>
> OK