linux-kernel - Re: [PATCH v2 1/7] drm/msm/dp: use dp_ctrl_off_link

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Message-ID: <CAE-0n52F2bVLS8xnTefQ+3cEmcXVo7p=BPOBmky3NJ0=8oMmMg@mail.gmail.com>
Date:   Thu, 22 Jul 2021 19:01:27 +0000
From:   Stephen Boyd <swboyd@...omium.org>
To:     Kuogee Hsieh <khsieh@...eaurora.org>,
        dri-devel@...ts.freedesktop.org, robdclark@...il.com,
        sean@...rly.run
Cc:     abhinavk@...eaurora.org, aravindh@...eaurora.org, airlied@...ux.ie,
        daniel@...ll.ch, bjorn.andersson@...aro.org,
        linux-arm-msm@...r.kernel.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/7] drm/msm/dp: use dp_ctrl_off_link_stream during PHY
 compliance test run

Quoting Kuogee Hsieh (2021-07-13 08:54:01)
> DP cable should always connect to DPU during the entire PHY compliance
> testing run. Since DP PHY compliance test is executed at irq_hpd event
> context, dp_ctrl_off_link_stream() should be used instead of dp_ctrl_off().
> dp_ctrl_off() is used for unplug event which is triggered when DP cable is
> dis connected.
>
> Changes in V2:
> -- add fixes statement
>
> Fixes: f21c8a276c2d ("drm/msm/dp: handle irq_hpd with sink_count = 0 correctly")
>
> Signed-off-by: Kuogee Hsieh <khsieh@...eaurora.org>
> ---

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