drm/mxsfb: Update mxsfb to support a bridge
Currently, the MXSFB DRM driver only supports a panel. But, its output display signal can also be redirected to another encoder, like a DSI controller. In this case, that DSI controller may act like a drm_bridge. In order support this use-case too, this patch adds support for drm_bridge in mxsfb. Signed-off-by: Robert Chiras <robert.chiras@nxp.com> Tested-by: Guido Günther <agx@sigxcpu.org> Signed-off-by: Stefan Agner <stefan@agner.ch> Link: https://patchwork.freedesktop.org/patch/msgid/1567078215-31601-2-git-send-email-robert.chiras@nxp.com
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