linux-kernel - Re: (subset) [PATCH v2] arm64: dts: qcom: sc7280: eDP for herobrine boards

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Message-Id: <165184936433.73465.16527836487625041409.b4-ty@linaro.org>
Date:   Fri,  6 May 2022 10:03:06 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Douglas Anderson <dianders@...omium.org>
Cc:     Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-kernel@...r.kernel.org, quic_kalyant@...cinc.com,
        Kuogee Hsieh <quic_khsieh@...cinc.com>,
        Rob Clark <robdclark@...omium.org>, devicetree@...r.kernel.org,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Matthias Kaehlcke <mka@...omium.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        linux-arm-msm@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>
Subject: Re: (subset) [PATCH v2] arm64: dts: qcom: sc7280: eDP for herobrine boards

On Tue, 26 Apr 2022 12:41:03 -0700, Douglas Anderson wrote:
> Add eDP support to herobrine boards, splitting up amongst the
> different files as makes sense. Rationale for the current split of
> things:
> * The eDP connector itself is on qcard. However, not all devices with
>   a qcard will use an eDP panel. Some might use MIPI and, presumably,
>   someone could build a device with qcard that had no display at all.
> * The qcard provides a PWM for backlight that goes to the eDP
>   connector. This PWM is also provided to the board and it's expected
>   that it would be used as the backlight PWM even for herobrine
>   devices with MIPI displays.
> * It's currently assumed that all herobrine boards will have some sort
>   of display, either MIPI or eDP (but not both).
> * We will assume herobrine-rev1 has eDP. The schematics allow for a
>   MIPI panel to be hooked up but, aside from some testing, nobody is
>   doing this and most boards don't have all the parts stuffed for
>   it. The two panels would also share a PWM for backlight, which is
>   weird.
> * herobrine-villager and herobrine-hoglin (crd) also have eDP.
> * herobrine-hoglin (crd) has slightly different regulator setup for
>   the backlight. It's expected that this is unique to this board. See
>   comments in the dts file.
> * There are some regulators that are defined in the qcard schematic
>   but provided by the board like "vreg_edp_bl" and
>   "vreg_edp_3p3". While we could put references to these regulators
>   straight in the qcard.dtsi file, this would force someone using
>   qcard that didn't provide those regulators to provide a dummy or do
>   an ugly /delete-node/. Instead, we'll add references in
>   herobrine.dtsi.
> 
> [...]

Applied, thanks!

[1/1] arm64: dts: qcom: sc7280: eDP for herobrine boards
      commit: 366a0a194b3b3e3e52bc7b7b1ac35b40a1187902

Best regards,
-- 
Bjorn Andersson <bjorn.andersson@...aro.org>