linux-kernel - Re: [PATCH v2] arm64: dts: qcom: c630: Add no-hpd to DSI bridge node

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Date:   Wed, 24 Mar 2021 16:18:47 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Stephen Boyd <swboyd@...omium.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
        Steev Klimaszewski <steev@...i.org>
Subject: Re: [PATCH v2] arm64: dts: qcom: c630: Add no-hpd to DSI bridge node

Hi,

On Wed, Mar 24, 2021 at 4:14 PM Stephen Boyd <swboyd@...omium.org> wrote:
>
> We should indicate that we're not using the HPD pin on this device, per
> the binding document. Otherwise if code in the future wants to enable
> HPD in the bridge when this property is absent we'll be enabling HPD
> when it isn't supposed to be used. Presumably this board isn't using hpd
> on the bridge.
>
> Cc: Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>
> Cc: Douglas Anderson <dianders@...omium.org>
> Cc: Steev Klimaszewski <steev@...i.org>
> Fixes: 956e9c85f47b ("arm64: dts: qcom: c630: Define eDP bridge and panel")
> Signed-off-by: Stephen Boyd <swboyd@...omium.org>
> ---
>  arch/arm64/boot/dts/qcom/sdm850-lenovo-yoga-c630.dts | 2 ++
>  1 file changed, 2 insertions(+)

Reviewed-by: Douglas Anderson <dianders@...omium.org>