linux-kernel - Re: [PATCH v1 1/2] ARM64: dts: qcom: enable eDP panel support for sc7280

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Message-ID: <CAD=FV=X_y3duGCN09sKOR0uZLft5x7OcLcBbbtT9EHi-4EGV6g@mail.gmail.com>
Date:   Wed, 2 Feb 2022 13:26:24 -0800
From:   Doug Anderson <dianders@...omium.org>
To:     Sankeerth Billakanti <quic_sbillaka@...cinc.com>
Cc:     dri-devel <dri-devel@...ts.freedesktop.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Rob Clark <robdclark@...il.com>,
        Sean Paul <seanpaul@...omium.org>,
        Stephen Boyd <swboyd@...omium.org>, quic_kalyant@...cinc.com,
        quic_abhinavk@...cinc.com, quic_khsieh@...cinc.com,
        quic_mkrishn@...cinc.com
Subject: Re: [PATCH v1 1/2] ARM64: dts: qcom: enable eDP panel support for sc7280

Hi,

On Mon, Jan 24, 2022 at 11:04 AM Doug Anderson <dianders@...omium.org> wrote:
>
> > +&mdss_edp {
> > +       status = "okay";
> > +
> > +       vdda-1p2-supply = <&vreg_l6b_1p2>;
> > +       vdda-0p9-supply = <&vreg_l10c_0p8>;
> > +
> > +       ports {
> > +               port@1 {
> > +                       reg = <1>;
> > +                       edp_out: endpoint {
> > +                               remote-endpoint = <&edp_panel_in>;
> > +                       };
> > +               };
> > +       };
>
> I think part of the above should be in sc7280.dtsi. Basically in
> sc7820.dtsi I think you should have:
>
> ports {
>   #address-cells = <1>;
>   #size-cells = <0>;
>   port@0 {
>     reg = <0>;
>     edp_in: endpoint {
>       remote-endpoint = <&dpu_intf5_out>;
>     };
>   };
>   port@1 {
>     reg = <1>;
>     edp_out: endpoint {
>     };
>   };
> };
>
> ...and then the crd dts file just needs:
>
> &edp_out {
>   remote-endpoint = <&edp_panel_in>;
> };
>
> Right?

I've attempted to do the sc7280 part of this in:

https://lore.kernel.org/r/20220202132301.v3.7.Ic84bb69c45be2fccf50e3bd17b845fe20eec624c@changeid

Assuming folks think that's good then you should probably base your
next version atop that.

-Doug