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path: root/drivers/gpu/drm/rcar-du/rcar_du_group.c
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Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_group.c')
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_group.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.c b/drivers/gpu/drm/rcar-du/rcar_du_group.c
index 7fd39a7d91c8..8e2ffe025153 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_group.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.c
@@ -49,9 +49,10 @@ static void rcar_du_group_setup_defr8(struct rcar_du_group *rgrp)
u32 defr8 = DEFR8_CODE | DEFR8_DEFE8;
/* The DEFR8 register for the first group also controls RGB output
- * routing to DPAD0
+ * routing to DPAD0 for DU instances that support it.
*/
- if (rgrp->index == 0)
+ if (rgrp->dev->info->routes[RCAR_DU_OUTPUT_DPAD0].possible_crtcs > 1 &&
+ rgrp->index == 0)
defr8 |= DEFR8_DRGBS_DU(rgrp->dev->dpad0_source);
rcar_du_group_write(rgrp, DEFR8, defr8);