diff --git a/drivers/soc/renesas/r8a77990-sysc.c b/drivers/soc/renesas/r8a77990-sysc.c
index 15579ebc5ed2059dbace28ba6137614e0a4c81e7..664b244eb1dd9d95fabe3305334784f69213c90c 100644
--- a/drivers/soc/renesas/r8a77990-sysc.c
+++ b/drivers/soc/renesas/r8a77990-sysc.c
@@ -28,19 +28,6 @@ static struct rcar_sysc_area r8a77990_areas[] __initdata = {
 	{ "3dg-b",	0x100, 1, R8A77990_PD_3DG_B,	R8A77990_PD_3DG_A },
 };
 
-static void __init rcar_sysc_fix_parent(struct rcar_sysc_area *areas,
-					unsigned int num_areas, u8 id,
-					int new_parent)
-{
-	unsigned int i;
-
-	for (i = 0; i < num_areas; i++)
-		if (areas[i].isr_bit == id) {
-			areas[i].parent = new_parent;
-			return;
-		}
-}
-
 /* Fixups for R-Car E3 ES1.0 revision */
 static const struct soc_device_attribute r8a77990[] __initconst = {
 	{ .soc_id = "r8a77990", .revision = "ES1.0" },
@@ -50,12 +37,10 @@ static const struct soc_device_attribute r8a77990[] __initconst = {
 static int __init r8a77990_sysc_init(void)
 {
 	if (soc_device_match(r8a77990)) {
-		rcar_sysc_fix_parent(r8a77990_areas,
-				     ARRAY_SIZE(r8a77990_areas),
-				     R8A77990_PD_3DG_A, R8A77990_PD_3DG_B);
-		rcar_sysc_fix_parent(r8a77990_areas,
-				     ARRAY_SIZE(r8a77990_areas),
-				     R8A77990_PD_3DG_B, R8A77990_PD_ALWAYS_ON);
+		/* Fix incorrect 3DG hierarchy */
+		swap(r8a77990_areas[7], r8a77990_areas[8]);
+		r8a77990_areas[7].parent = R8A77990_PD_ALWAYS_ON;
+		r8a77990_areas[8].parent = R8A77990_PD_3DG_B;
 	}
 
 	return 0;