diff --git a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.c b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.c
index e8086c09eb6fb615cdbadc5fc6ff1adfe338a38e..626f9cf8aad282f49af70516b612397705b54ab8 100644
--- a/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.c
+++ b/drivers/gpu/drm/amd/display/dc/calcs/dcn_calc_auto.c
@@ -277,7 +277,7 @@ void mode_support_and_system_configuration(struct dcn_bw_internal_vars *v)
 			default:
 				break;
 			}
-			v->required_phyclk[k] = v->required_output_bw / 3.0;
+			v->required_phyclk[k] = v->required_phyclk[k] / 3.0;
 		}
 		else if (v->output[k] == dcn_bw_dp) {
 			v->required_phyclk[k] = v->required_output_bw / 4.0;