Re: [v1] arm64/dts/qcom/sc7280: update mdp clk to max supported value to support higher refresh rates

[Stephen Boyd]

Quoting Vinod Polimera (2022-02-21 05:12:06)
> Panels with higher refresh rate will need mdp clk above 300Mhz.
> Select max frequency for mdp clock during bootup, dpu driver will
> scale down the clock as per usecase when first update from the framework is received.
>
> Signed-off-by: Vinod Polimera <quic_vpolimer@xxxxxxxxxxx>

Please add a Fixes tag.

> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index baf1653..7af96fc 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2895,7 +2895,7 @@
>                                 assigned-clocks = <&dispcc DISP_CC_MDSS_MDP_CLK>,
>                                                 <&dispcc DISP_CC_MDSS_VSYNC_CLK>,
>                                                 <&dispcc DISP_CC_MDSS_AHB_CLK>;
> -                               assigned-clock-rates = <300000000>,
> +                               assigned-clock-rates = <506666667>,

Why not simply remove the clock assignment and set the rate based on the
OPP when the driver probes?

>                                                         <19200000>,
>                                                         <19200000>;
>                                 operating-points-v2 = <&mdp_opp_table>;