[RFC PATCH v2 2/5] drm/msm/dp: support attaching bridges to the DP encoder

[Stephen Boyd]

Quoting Dmitry Baryshkov (2022-02-11 14:40:03)
> Currently DP driver will allocate panel bridge for eDP panels. This
> supports only the following topology:
>
> - eDP encoder ⇒ eDP panel (wrapped using panel-bridge)
>
> Simplify this code to just check if there is any next bridge in the
> chain (be it a panel bridge or regular bridge). Rename panel_bridge
> field to next_bridge accordingly.
>
> This allows one to use e.g. one of the following display topologies:
>
> - eDP encoder ⇒ ptn3460 ⇒ fixed LVDS panel
> - eDP encoder ⇒ ptn3460 ⇒ LVDS connector with EDID lines for panel autodetect
> - eDP encoder ⇒ ptn3460 ⇒ THC63LVD1024 ⇒ DPI panel.
> - eDP encoder ⇒ LT8912 ⇒ DSI panel
>
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
> ---

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