linux-kernel - Re: [PATCH v3 4/6] drm/msm/dp: Enable downspread for supported DP sinks

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Message-ID: <CAE-0n52b5xKboi6b-J0m-W_rbjgSzyJqhPrMVaZrm65L2GeOFg@mail.gmail.com>
Date:   Wed, 27 Oct 2021 23:33:23 -0700
From:   Stephen Boyd <swboyd@...omium.org>
To:     Sankeerth Billakanti <quic_sbillaka@...cinc.com>,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     robdclark@...il.com, seanpaul@...omium.org,
        kalyan_t@...eaurora.org, abhinavk@...eaurora.org,
        dianders@...omium.org, khsieh@...eaurora.org,
        mkrishn@...eaurora.org, sbillaka@...eaurora.org
Subject: Re: [PATCH v3 4/6] drm/msm/dp: Enable downspread for supported DP sinks

Quoting Sankeerth Billakanti (2021-10-27 18:54:46)
> The sc7280 eDP sink that supports downspread will fail link training
> if source does not enable SSC / downspread. This change will set the
> downspread bit in the DP sink if supported and indicate SSC support
> to the DP PHY driver.
>
> Signed-off-by: Sankeerth Billakanti <quic_sbillaka@...cinc.com>
> ---

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