linux-kernel - Re: [PATCH v2] drm/msm/dp: always add fail-safe mode into connector mode list

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Message-ID: <CAE-0n52uYJ-E2HZnwjJL5VfXnVjiSGJ5MnZG827i=3NP7QNm1g@mail.gmail.com>
Date:   Wed, 16 Feb 2022 11:32:50 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>, agross@...nel.org,
        airlied@...ux.ie, bjorn.andersson@...aro.org, daniel@...ll.ch,
        dmitry.baryshkov@...aro.org, robdclark@...il.com, sean@...rly.run,
        vkoul@...nel.org
Cc:     quic_abhinavk@...cinc.com, aravindh@...eaurora.org,
        freedreno@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/msm/dp: always add fail-safe mode into connector
 mode list

Quoting Kuogee Hsieh (2022-01-24 15:17:54)
> Some of DP link compliant test expects to return fail-safe mode
> if prefer detailed timing mode can not be supported by mainlink's
> lane and rate after link training. Therefore add fail-safe mode
> into connector mode list as backup mode. This patch fixes test
> case 4.2.2.1.
>
> Changes in v2:
> -- add Fixes text string
>
> Fixes: 4b85d405cfe9 ( "drm/msm/dp: reduce link rate if failed at link training 1")
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>
> ---

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