Re: [PATCH 08/11] dt-bindings: display/msm: add mdp-opp-table to dpu-sdm845

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On Sun, Jun 26, 2022 at 02:25:10AM +0300, Dmitry Baryshkov wrote:
> On SDM845 platforms DPU device tree node contains child object
> mdp-opp-table providing OPP table for the DPU. Add it to the list of
> properties to let sdm845.dtsi to validate.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
>  .../devicetree/bindings/display/msm/dpu-sdm845.yaml      | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml b/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> index 0dc16326bf8e..cc95adcf8f11 100644
> --- a/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> +++ b/Documentation/devicetree/bindings/display/msm/dpu-sdm845.yaml
> @@ -50,6 +50,10 @@ properties:
>      maxItems: 1
>  
>    operating-points-v2: true
> +
> +  mdp-opp-table:

Is there another kind of opp-table besides mdp? Node names should be 
generic.

> +    $ref: /schemas/opp/opp-v2.yaml#
> +
>    ports:
>      $ref: /schemas/graph.yaml#/properties/ports
>      description: |
> @@ -116,11 +120,12 @@ examples:
>                            <0x0aeb0000 0x2008>;
>                      reg-names = "mdp", "vbif";
>  
> -                    clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> +                    clocks = <&gcc GCC_DISP_AXI_CLK>,
> +                             <&dispcc DISP_CC_MDSS_AHB_CLK>,

What does the OPP table have to do with clocks? Adding a clock anywhere 
but the end is an ABI break.

>                               <&dispcc DISP_CC_MDSS_AXI_CLK>,
>                               <&dispcc DISP_CC_MDSS_MDP_CLK>,
>                               <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> -                    clock-names = "iface", "bus", "core", "vsync";
> +                    clock-names = "gcc-bus", "iface", "bus", "core", "vsync";
>  
>                      interrupt-parent = <&mdss>;
>                      interrupts = <0>;
> -- 
> 2.35.1
> 
> 



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