linux-kernel - Re: [PATCH v2 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza

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Message-ID: <158755121629.159702.14849607096816306080@swboyd.mtv.corp.google.com>
Date:   Wed, 22 Apr 2020 03:26:56 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Douglas Anderson <dianders@...omium.org>,
        Laurent.pinchart@...asonboard.com, a.hajda@...sung.com,
        airlied@...ux.ie, bgolaszewski@...libre.com, daniel@...ll.ch,
        linus.walleij@...aro.org, narmstrong@...libre.com,
        robh+dt@...nel.org, spanda@...eaurora.org
Cc:     jonas@...boo.se, jeffrey.l.hugo@...il.com,
        linux-gpio@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        jernej.skrabec@...l.net, bjorn.andersson@...aro.org,
        robdclark@...omium.org, Douglas Anderson <dianders@...omium.org>,
        Andy Gross <agross@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 6/6] arm64: dts: sdm845: Add "no-hpd" to sn65dsi86 on cheza

Quoting Douglas Anderson (2020-04-20 22:06:22)
> We don't have the HPD line hooked up to the bridge chip.  Add it as
> suggested in the patch ("dt-bindings: drm/bridge: ti-sn65dsi86:
> Document no-hpd").
> 
> NOTE: this patch isn't expected to have any effect but just keeps us
> cleaner for the future.  Currently the driver in Linux just assumes
> that nobody has HPD hooked up.  This change allows us to later
> implement HPD support in the driver without messing up sdm845-cheza.
> 
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---

Reviewed-by: Stephen Boyd <swboyd@...omium.org>