linux-kernel - Re: [PATCH v5 11/12] arm64: dts: qcom: sc8280xp-crd: Enable EDP

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Date:   Fri, 9 Dec 2022 13:30:05 +0200
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Kalyan Thota <quic_kalyant@...cinc.com>,
        Jessica Zhang <quic_jesszhan@...cinc.com>,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Johan Hovold <johan+linaro@...nel.org>,
        Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5 11/12] arm64: dts: qcom: sc8280xp-crd: Enable EDP

On Thu, 8 Dec 2022 at 00:00, Bjorn Andersson <quic_bjorande@...cinc.com> wrote:
>
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
>
> The SC8280XP CRD has a EDP display on MDSS0 DP3, enable relevant nodes
> and link it together with the backlight control.
>
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
>
> Changes since v4:
> - None
>
>  arch/arm64/boot/dts/qcom/sc8280xp-crd.dts | 72 ++++++++++++++++++++++-
>  1 file changed, 71 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts b/arch/arm64/boot/dts/qcom/sc8280xp-crd.dts
> index f09810e3d956..a7d2384cbbe8 100644

[skipped]

> @@ -230,6 +246,54 @@ vreg_l9d: ldo9 {
>         };
>  };
>
> +&dispcc0 {
> +       status = "okay";
> +};
> +
> +&mdss0 {
> +       status = "okay";
> +};
> +
> +&mdss0_dp3 {
> +       compatible = "qcom,sc8280xp-edp";
> +       status = "okay";
> +
> +       data-lanes = <0 1 2 3>;

I hope to land Kuogee patches that move data-lanes to the endpoint
node, where they belong. Do we have any good way to proceed here?
Or would it be easier to land this patch as is and then, maybe next
cycle, move the property?

> +
> +       aux-bus {
> +               panel {
> +                       compatible = "edp-panel";
> +                       power-supply = <&vreg_edp_3p3>;
> +
> +                       backlight = <&backlight>;
> +
> +                       ports {
> +                               port {
> +                                       edp_panel_in: endpoint {
> +                                               remote-endpoint = <&mdss0_dp3_out>;
> +                                       };
> +                               };
> +                       };
> +               };
> +       };
> +
> +       ports {
> +               port@1 {
> +                       reg = <1>;
> +                       mdss0_dp3_out: endpoint {
> +                               remote-endpoint = <&edp_panel_in>;
> +                       };
> +               };
> +       };
> +};
> +
> +&mdss0_dp3_phy {
> +       status = "okay";
> +
> +       vdda-phy-supply = <&vreg_l6b>;
> +       vdda-pll-supply = <&vreg_l3b>;
> +};
> +
>  &pcie2a {
>         perst-gpios = <&tlmm 143 GPIO_ACTIVE_LOW>;
>         wake-gpios = <&tlmm 145 GPIO_ACTIVE_LOW>;
> @@ -496,6 +560,12 @@ hastings_reg_en: hastings-reg-en-state {
>  &tlmm {
>         gpio-reserved-ranges = <74 6>, <83 4>, <125 2>, <128 2>, <154 7>;
>
> +       edp_reg_en: edp-reg-en-state {
> +               pins = "gpio25";
> +               function = "gpio";
> +               output-enable;
> +       };
> +
>         kybd_default: kybd-default-state {
>                 disable-pins {
>                         pins = "gpio102";
> --
> 2.37.3
>


-- 
With best wishes
Dmitry