Re: [PATCH v5 3/5] arm64: dts: qcom: sm8350: add dp controller

[Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>]

On 17/03/2023 11:12, Neil Armstrong wrote:
> Add the Display Port controller subnode to the MDSS node.
>
> Tested-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx> #SM8350-HDK
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> ---
>   arch/arm64/boot/dts/qcom/sm8350.dtsi | 74 ++++++++++++++++++++++++++++++++++++
>   1 file changed, 74 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8350.dtsi b/arch/arm64/boot/dts/qcom/sm8350.dtsi
> index 975ab4cbe57e..37ae4a948be1 100644
> --- a/arch/arm64/boot/dts/qcom/sm8350.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8350.dtsi
> @@ -2415,6 +2415,80 @@ dpu_intf2_out: endpoint {
>   							remote-endpoint = <&mdss_dsi1_in>;
>   						};
>   					};
> +
> +					port@2 {
> +						reg = <2>;
> +						dpu_intf0_out: endpoint {
> +							remote-endpoint = <&mdss_dp_in>;
> +						};
> +					};
> +				};
> +			};
> +
> +			mdss_dp: displayport-controller@ae90000 {
> +				compatible = "qcom,sm8350-dp";
> +				reg = <0 0xae90000 0 0x200>,
> +				      <0 0xae90200 0 0x200>,
> +				      <0 0xae90400 0 0x600>,
> +				      <0 0xae91000 0 0x400>,
> +				      <0 0xae91400 0 0x400>;
> +				interrupt-parent = <&mdss>;
> +				interrupts = <12>;
> +				clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> +					 <&dispcc DISP_CC_MDSS_DP_AUX_CLK>,
> +					 <&dispcc DISP_CC_MDSS_DP_LINK_CLK>,
> +					 <&dispcc DISP_CC_MDSS_DP_LINK_INTF_CLK>,
> +					 <&dispcc DISP_CC_MDSS_DP_PIXEL_CLK>;
> +				clock-names = "core_iface",
> +					      "core_aux",
> +					      "ctrl_link",
> +			                      "ctrl_link_iface",
> +					      "stream_pixel";
> +
> +				assigned-clocks = <&dispcc DISP_CC_MDSS_DP_LINK_CLK_SRC>,
> +						  <&dispcc DISP_CC_MDSS_DP_PIXEL_CLK_SRC>;
> +				assigned-clock-parents = <&usb_1_qmpphy QMP_USB43DP_DP_LINK_CLK>,
> +							 <&usb_1_qmpphy QMP_USB43DP_DP_VCO_DIV_CLK>;
> +
> +				phys = <&usb_1_qmpphy QMP_USB43DP_DP_PHY>;
> +			        phy-names = "dp";
> +
> +			        #sound-dai-cells = <0>;
> +
> +				operating-points-v2 = <&dp_opp_table>;
> +				power-domains = <&rpmhpd SM8350_MMCX>;
> +
> +				status = "disabled";
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +
> +					port@0 {
> +						reg = <0>;
> +						mdss_dp_in: endpoint {
> +							remote-endpoint = <&dpu_intf0_out>;
> +						};
> +					};
> +				};
> +
> +				dp_opp_table: opp-table {
> +					compatible = "operating-points-v2";

I think we still need an OPP entry for RBR rate (160000000). Downstream 
would resort to low_svs in such case, the min voltage for MMCX domain.

> +
> +					opp-270000000 {
> +						opp-hz = /bits/ 64 <270000000>;
> +						required-opps = <&rpmhpd_opp_svs>;
> +					};
> +
> +					opp-540000000 {
> +						opp-hz = /bits/ 64 <540000000>;
> +						required-opps = <&rpmhpd_opp_svs_l1>;
> +					};
> +
> +					opp-810000000 {
> +						opp-hz = /bits/ 64 <810000000>;
> +						required-opps = <&rpmhpd_opp_nom>;
> +					};
>   				};
>   			};
>   

--
With best wishes
Dmitry