linux-kernel - Re: [PATCH v5 1/3] arm64: dts: qcom: add data-lanes and link-freuencies into dp

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Date:   Wed, 30 Nov 2022 11:20:45 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>
Cc:     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, bjorn.andersson@...aro.org,
        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 v5 1/3] arm64: dts: qcom: add data-lanes and
 link-freuencies into dp_out endpoint

On Wed, 30 Nov 2022 at 02:12, Kuogee Hsieh <quic_khsieh@...cinc.com> 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

Bindings update?

>
> 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 754d2d6..39f0844 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
> @@ -812,7 +812,11 @@ hp_i2c: &i2c9 {
>         status = "okay";
>         pinctrl-names = "default";
>         pinctrl-0 = <&dp_hot_plug_det>;
> -       data-lanes = <0 1>;
> +};
> +
> +&dp_out {
> +    data-lanes = <0  1>;
> +    link-frequencies = /bits/ 64 <160000000 270000000 540000000>;
>  };
>
>  &pm6150_adc {
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> index 93e39fc..b7c343d 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine.dtsi
> @@ -440,7 +440,11 @@ 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>;
> +       link-frequencies = /bits/ 64 <160000000 270000000 540000000 810000000>;
>  };
>
>  &mdss_mdp {
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>


-- 
With best wishes
Dmitry