[PATCH v2 6/9] 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>

---
v1->v2:
* reworked according to Laurent's feedback

 drivers/gpu/drm/rcar-du/rcar_lvds.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/rcar-du/rcar_lvds.c 
b/drivers/gpu/drm/rcar-du/rcar_lvds.c
index 3fe0b86..41d28f4 100644
--- a/drivers/gpu/drm/rcar-du/rcar_lvds.c
+++ b/drivers/gpu/drm/rcar-du/rcar_lvds.c
@@ -603,6 +603,11 @@ static void rcar_lvds_mode_set(struct drm_bridge *bridge,
        lvds->display_mode = *adjusted_mode;
 
        rcar_lvds_get_lvds_mode(lvds);
+       if (lvds->companion) {
+               struct rcar_lvds *companion_lvds = bridge_to_rcar_lvds(
+                                                       lvds->companion);
+               companion_lvds->mode = lvds->mode;
+       }
 }
 
 static int rcar_lvds_attach(struct drm_bridge *bridge)
-- 
2.7.4