On Thu, 22 Feb 2024 at 01:19, Bjorn Andersson <quic_bjora...@quicinc.com> wrote:
>
> The max frequency listed in the DPU opp-table is 506MHz, this is not
> sufficient to drive a 4k@60 display, resulting in constant underrun.
>
> Add the missing MDP_CLK turbo frequency of 608MHz to the opp-table to
> fix this.
I think we might want to keep this disabled for ChromeOS devices. Doug?
>
> Signed-off-by: Bjorn Andersson <quic_bjora...@quicinc.com>
> ---
> arch/arm64/boot/dts/qcom/sc7280.dtsi | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index a19c278ebec9..a2a6717c6c87 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -4417,6 +4417,11 @@ opp-506666667 {
> opp-hz = /bits/ 64
> <506666667>;
> required-opps =
> <&rpmhpd_opp_nom>;
> };
> +
> + opp-608000000 {
> + opp-hz = /bits/ 64
> <608000000>;
> + required-opps =
> <&rpmhpd_opp_turbo>;
> + };
> };
> };
>
>
> --
> 2.25.1
>
--
With best wishes
Dmitry
