[PATCH] Revert "dt-bindings: usb: mtk-xhci: Make all clocks required"

[Rob Herring]

On Fri, Jul 8, 2022 at 1:26 PM Nícolas F. R. A. Prado
<nfraprado at collabora.com> wrote:
>
> This reverts commit ebc4969ae125e65fdb563f66f4bfa7aec95f7eb4. That
> commit was supposed to make the binding better reflect the MediaTek XHCI
> hardware block by requiring all clocks to be present. But doing that
> also causes too much noise in the devicetrees, since it requires
> updating old MediaTek DTs to add clock handles for the fixed clocks, and
> going forward every new clock added to the binding would require even
> more updates.
>
> The commit also didn't update the example to match the changes, causing
> additional warnings.
>
> Instead let's keep the clocks optional so that old devicetrees can keep
> omitting the fixed clocks, and we'll just add the clocks as required on
> new DTs.
>
> Signed-off-by: Nícolas F. R. A. Prado <nfraprado at collabora.com>
>
> ---
>
>  Documentation/devicetree/bindings/usb/mediatek,mtk-xhci.yaml | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)

Acked-by: Rob Herring <robh at kernel.org>