[PATCH/RFC 09/12] drm: rcar-du: lvds: Fix companion's mode

[Fabrizio Castro]

The companion encoder needs to be told to use the same
mode as the primary encoder.

Fixes: e9e8798ab7b8 ("drm: rcar-du: lvds: Add support for dual-link mode")
Signed-off-by: Fabrizio Castro <fabrizio.cas...@bp.renesas.com>
---
 drivers/gpu/drm/rcar-du/rcar_lvds.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c 
b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index edd63f5..7944ae9 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -415,8 +415,12 @@ static void rcar_lvds_enable(struct drm_bridge *bridge)
                return;
 
        /* Enable the companion LVDS encoder in dual-link mode. */
-       if (lvds->dual_link && lvds->companion)
+       if (lvds->dual_link && lvds->companion) {
+               struct rcar_lvds *companion_lvds = bridge_to_rcar_lvds(
+                                                       lvds->companion);
+               companion_lvds->mode = lvds->mode;
                lvds->companion->funcs->enable(lvds->companion);
+       }
 
        /*
         * Hardcode the channels and control signals routing for now.
-- 
2.7.4