1 files changed, 12 insertions, 2 deletions

diff --git a/drivers/gpu/drm/rcar-du/rcar_du_kms.c b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
index ed7fa3204892..7c7aff8cdf77 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_kms.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_kms.c
@@ -512,12 +512,22 @@ int rcar_du_modeset_init(struct rcar_du_device *rcdu)
 
         dev->mode_config.min_width = 0;
         dev->mode_config.min_height = 0;
-        dev->mode_config.max_width = 4095;
-        dev->mode_config.max_height = 2047;
         dev->mode_config.normalize_zpos = true;
         dev->mode_config.funcs = &rcar_du_mode_config_funcs;
         dev->mode_config.helper_private = &rcar_du_mode_config_helper;
 
+        if (rcdu->info->gen < 3) {
+                dev->mode_config.max_width = 4095;
+                dev->mode_config.max_height = 2047;
+        } else {
+                /*
+                 * The Gen3 DU uses the VSP1 for memory access, and is limited
+                 * to frame sizes of 8190x8190.
+                 */
+                dev->mode_config.max_width = 8190;
+                dev->mode_config.max_height = 8190;
+        }
+
         rcdu->num_crtcs = hweight8(rcdu->info->channels_mask);
 
         ret = rcar_du_properties_init(rcdu);