linux-kernel - Re: [PATCH v2] arm64: dts: qcom: sc7280: Add Display Port node

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Date:   Mon, 30 Aug 2021 21:28:52 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Kuogee Hsieh <khsieh@...eaurora.org>
Cc:     robdclark@...il.com, sean@...rly.run, swboyd@...omium.org,
        vkoul@...nel.org, agross@...nel.org, robh+dt@...nel.org,
        devicetree@...r.kernel.org, abhinavk@...eaurora.org,
        aravindh@...eaurora.org, mkrishn@...eaurora.org,
        kalyan_t@...eaurora.org, rajeevny@...eaurora.org,
        freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] arm64: dts: qcom: sc7280: Add Display Port node

On Mon 30 Aug 11:04 CDT 2021, Kuogee Hsieh wrote:

> Changes in v2:
> -- break this patch into 3 patches
> 

It's only the DRM tree that want the changelog above '---', please move
it down.

Also, why isn't this "patch n/3" if there's three patches?

> Signed-off-by: Kuogee Hsieh <khsieh@...eaurora.org>
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 88 +++++++++++++++++++++++++++++++++++-
>  1 file changed, 87 insertions(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index c29226b..f224029 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -3202,6 +3202,13 @@
>  							remote-endpoint = <&edp_in>;
>  						};
>  					};
> +
> +					port@2 {
> +                                                reg = <2>;
> +                                                dpu_intf0_out: endpoint {
> +                                                        remote-endpoint = <&dp_in>;
> +                                                };
> +                                        };

This block seems to be indented with spaces?

>  				};
>  
>  				mdp_opp_table: mdp-opp-table {
> @@ -3389,6 +3396,78 @@
>  					};
>  				};
>  			};
> +
> +			msm_dp: displayport-controller@...0000 {

Prefixing the labels of all the mdss children mdss_ instead has the
benefit that the nodes group naturally in the board dts.

> +				status = "disabled";
> +				compatible = "qcom,sc7180-dp", "qcom,sc7280-dp";

This isn't a sc7180-dp block.

> +
> +				reg = <0 0x0ae90000 0 0x1400>;
> +
> +				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",

There seems to be some spaced among the tabs here.

> +						"stream_pixel";
> +				#clock-cells = <1>;
> +				assigned-clocks = <&dispcc DISP_CC_MDSS_DP_LINK_CLK_SRC>,
> +						  <&dispcc DISP_CC_MDSS_DP_PIXEL_CLK_SRC>;
> +				assigned-clock-parents = <&dp_phy 0>, <&dp_phy 1>;
> +				phys = <&dp_phy>;
> +				phy-names = "dp";
> +
> +				operating-points-v2 = <&dp_opp_table>;
> +				power-domains = <&rpmhpd SC7280_CX>;
> +
> +				#sound-dai-cells = <0>;
> +
> +				ports {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					port@0 {
> +						reg = <0>;
> +						dp_in: endpoint {
> +							remote-endpoint = <&dpu_intf0_out>;
> +						};
> +					};
> +
> +					port@1 {
> +						reg = <1>;
> +						dp_out: endpoint { };
> +					};
> +				};
> +
> +				dp_opp_table: opp-table {
> +					compatible = "operating-points-v2";
> +
> +					opp-160000000 {
> +						opp-hz = /bits/ 64 <160000000>;
> +						required-opps = <&rpmhpd_opp_low_svs>;
> +					};
> +
> +					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>;
> +					};
> +				};
> +			};
>  		};
>  
>  		dispcc: clock-controller@...0000 {
> @@ -3398,7 +3477,8 @@
>  				 <&gcc GCC_DISP_GPLL0_CLK_SRC>,
>  				 <&dsi_phy 0>,
>  				 <&dsi_phy 1>,
> -				 <0>, <0>,
> +			  	 <&dp_phy 0>,
> +			  	 <&dp_phy 1>,

Same here, seems to be some spaces among the tabs on both of these
lines.

>  				 <&msm_edp 0>,
>  				 <&msm_edp 1>;
>  			clock-names = "bi_tcxo", "gcc_disp_gpll0_clk",
> @@ -3525,6 +3605,12 @@
>                                  };
>                          };
>  
> +			dp_hot_plug_det: dp-hot-plug-det {
> +				pins = "gpio47";
> +				function = "dp_hot";
> +				bias-disable;
> +                        };

This seems to be indented with spaces?

Regards,
Bjorn

> +
>  			qspi_clk: qspi-clk {
>  				pins = "gpio14";
>  				function = "qspi_clk";
> -- 
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>