linux-kernel - Re: [PATCH v1 9/9] arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc dsi-hdmi bridge

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Date:   Thu, 3 Nov 2022 17:19:08 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     Robert Foss <robert.foss@...aro.org>, agross@...nel.org,
        bjorn.andersson@...aro.org, konrad.dybcio@...ainline.org,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        robdclark@...il.com, quic_abhinavk@...cinc.com, sean@...rly.run,
        airlied@...ux.ie, daniel@...ll.ch, quic_kalyant@...cinc.com,
        swboyd@...omium.org, angelogioacchino.delregno@...ainline.org,
        loic.poulain@...aro.org, quic_vpolimer@...cinc.com,
        vkoul@...nel.org, dianders@...omium.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org,
        Jonathan Marek <jonathan@...ek.ca>, vinod.koul@...aro.org,
        quic_jesszhan@...cinc.com
Subject: Re: [PATCH v1 9/9] arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc
 dsi-hdmi bridge

On 28/10/2022 16:56, Dmitry Baryshkov wrote:
> On 28/10/2022 15:08, Robert Foss wrote:
>> The sm8350-hdk ships with the LT9611 UXC DSI/HDMI bridge chip.
>>
>> In order to toggle the board to enable the HDMI output,
>> switch #7 & #8 on the rightmost multi-switch package have
>> to be toggled to On.
> 
> Since this doesn't look like a default setup, it would probably make 
> sense to move this to new sm8350-hdk-hdmi.dts with the comment regarding 
> necessary switch changes at the top of the file.
> 

Please excuse me here. I checked the Lantronix site. It clearly names 
'Optional Display/Expansion board mates to DSI connectors'. So, you were 
correct, the HDMI should be in the base setup, while DSI panel should 
come as the extending DT file.


-- 
With best wishes
Dmitry