Re: [PATCH 07/18] dt-bindings: display: rockchip: dw-hdmi: Allow "ref" as clock name

[Heiko Stuebner <heiko@sntech.de>]

Am Mittwoch, 8. Dezember 2021, 16:12:19 CET schrieb Sascha Hauer:
> "vpll" is a misnomer. A clock input to a device should be named after
> the usage in the device, not after the clock that drives it. On the
> rk3568 the same clock is driven by the HPLL.
> To fix that, this patch renames the vpll clock to ref clock.  The clock
> name "vpll" is left for compatibility to old device trees.

Can't we just say that the binding only takes the "ref" name, but
the code still allows "vpll".

I think I remember Rob suggesting something similar in the past.

I don't think that we need to keep the binding(-validation)
compatible with old devicetrees, but the kernel itself should stay
compatible.


Heiko


> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  .../bindings/display/rockchip/rockchip,dw-hdmi.yaml         | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
> index 6e09dd2ee05ac..2ab6578033da2 100644
> --- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
> +++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
> @@ -48,10 +48,14 @@ properties:
>            - cec
>            - grf
>            - vpll
> +          - ref
>        - enum:
>            - grf
>            - vpll
> -      - const: vpll
> +          - ref
> +      - enum:
> +          - vpll
> +          - ref
>  
>    ddc-i2c-bus:
>      $ref: /schemas/types.yaml#/definitions/phandle
>