linux-kernel - Re: [PATCH v16 1/5] arm64: dts: qcom: add data-lanes and link-freuencies into dp

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Date:   Tue, 3 Jan 2023 09:11:34 -0800
From:   Kuogee Hsieh <quic_khsieh@...cinc.com>
To:     <dri-devel@...ts.freedesktop.org>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <agross@...nel.org>,
        <dmitry.baryshkov@...aro.org>, <andersson@...nel.org>,
        <konrad.dybcio@...ainline.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <devicetree@...r.kernel.org>,
        <airlied@...il.com>
CC:     <quic_abhinavk@...cinc.com>, <quic_sbillaka@...cinc.com>,
        <freedreno@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v16 1/5] arm64: dts: qcom: add data-lanes and
 link-freuencies into dp_out endpoint

Hi Krzysztof/Dmitry,

Would you please review this patch.

Thanks,


On 12/27/2022 9:44 AM, Kuogee Hsieh wrote:
> Move data-lanes property from mdss_dp node to dp_out endpoint. Also
> add link-frequencies property into dp_out endpoint as well. The last
> frequency specified at link-frequencies will be the max link rate
> supported by DP.
>
> Changes in v5:
> -- revert changes at sc7180.dtsi and sc7280.dtsi
> -- add &dp_out to sc7180-trogdor.dtsi and sc7280-herobrine.dtsi
>
> Changes in v6:
> -- add data-lanes and link-frequencies to yaml
>
> Changes in v7:
> -- change 160000000 to 1620000000
> -- separate yaml to different patch
>
> Changes in v8:
> -- correct Bjorn mail address to kernel.org
>
> Changes in v9:
> -- use symbol rate (hz) for link-frequencies at dp_out at sc7180_trogdor.dtsi
>
> Changes in v13:
> -- delete an extra space at data-lanes
>
> Changes in v15:
> -- replace space with tab at sc7180-trogdor.dtsi
>
> Changes in v16:
> -- rename dp_out with mdss_dp_Out and keep the order
>
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---
>   arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi   | 4 ++++
>   arch/arm64/boot/dts/qcom/sc7180.dtsi           | 2 +-
>   arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 4 ++++
>   arch/arm64/boot/dts/qcom/sc7280.dtsi           | 2 +-
>   4 files changed, 10 insertions(+), 2 deletions(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> index eae22e6..21fbaff 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -814,7 +814,11 @@ hp_i2c: &i2c9 {
>   	status = "okay";
>   	pinctrl-names = "default";
>   	pinctrl-0 = <&dp_hot_plug_det>;
> +};
> +
> +&mdss_dp_out {
>   	data-lanes = <0 1>;
> +	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000>;
>   };
>   
>   &pm6150_adc {
> diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> index 58976a1b..0a90cce 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
> @@ -3119,7 +3119,7 @@
>   
>   					port@1 {
>   						reg = <1>;
> -						dp_out: endpoint { };
> +						mdss_dp_out: endpoint { };
>   					};
>   				};
>   
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> index c11e371..3f6f1c9 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> @@ -442,7 +442,11 @@ ap_i2c_tpm: &i2c14 {
>   	status = "okay";
>   	pinctrl-names = "default";
>   	pinctrl-0 = <&dp_hot_plug_det>;
> +};
> +
> +&mdss_dp_out {
>   	data-lanes = <0 1>;
> +	link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000 8100000000>;
>   };
>   
>   &mdss_mdp {
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 2125803..43ef6dc 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -4135,7 +4135,7 @@
>   
>   					port@1 {
>   						reg = <1>;
> -						dp_out: endpoint { };
> +						mdss_dp_out: endpoint { };
>   					};
>   				};
>