linux-kernel - Re: [PATCH v11 1/5] arm64: dts: qcom: add data-lanes and link-freuencies into dp

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Message-ID: <97065624-2fcf-9b83-9129-27c88d49d946@linaro.org>
Date:   Fri, 9 Dec 2022 15:57:22 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>,
        dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run, swboyd@...omium.org, dianders@...omium.org,
        vkoul@...nel.org, daniel@...ll.ch, airlied@...ux.ie,
        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 v11 1/5] arm64: dts: qcom: add data-lanes and
 link-freuencies into dp_out endpoint

On 08/12/2022 23:36, 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
> 
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---
>  arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi   | 6 +++++-
>  arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi | 6 +++++-
>  2 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..93b0cde 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>;
> -	data-lanes = <0 1>;
> +};
> +
> +&dp_out {
> +    data-lanes = <0  1>;

Why adding two spaces? Just cut previous line and paste it, don't change it.

> +    link-frequencies = /bits/ 64 <1620000000 2700000000 5400000000>;
>  };
>  
>  &pm6150_adc {
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> index c11e371..3c7a9d8 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>;
> -	data-lanes = <0 1>;
> +};
> +
> +&dp_out {
> +	data-lanes = <0  1>;

Ditto


Best regards,
Krzysztof