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

[Stephen Boyd]

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 at quicinc.com>
> ---

Reviewed-by: Stephen Boyd <swboyd at chromium.org>