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-rw-r--r--linux-core/nv50_kms_wrapper.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/linux-core/nv50_kms_wrapper.c b/linux-core/nv50_kms_wrapper.c
index 009972c8..6e0805fc 100644
--- a/linux-core/nv50_kms_wrapper.c
+++ b/linux-core/nv50_kms_wrapper.c
@@ -1119,6 +1119,10 @@ static int nv50_kms_connector_set_property(struct drm_connector *drm_connector,
break;
}
+ /* LVDS always needs gpu scaling */
+ if (connector->type == CONNECTOR_LVDS && internal_value == SCALE_NON_GPU)
+ return -EINVAL;
+
connector->scaling_mode = internal_value;
if (drm_connector->encoder && drm_connector->encoder->crtc)