diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 797008033089132bbaee8ef8fb82e0d65bebf394..5c709985904e3b4b0520a401e222397c80591ce9 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -301,10 +301,10 @@ static const struct ddi_buf_trans skl_y_ddi_translations_hdmi[] = {
 };
 
 struct bxt_ddi_buf_trans {
-	u32 margin;	/* swing value */
-	u32 scale;	/* scale value */
-	u32 enable;	/* scale enable */
-	u32 deemphasis;
+	u8 margin;	/* swing value */
+	u8 scale;	/* scale value */
+	u8 enable;	/* scale enable */
+	u8 deemphasis;
 	bool default_index; /* true if the entry represents default value */
 };