diff --git a/drivers/soc/mediatek/mt8186-mmsys.h b/drivers/soc/mediatek/mt8186-mmsys.h
index 7de329f2d7297e16fa7a7d14e5db71b88e959220..c72ccf86ea28a0f8f46767ca12ac7b7dba0f9527 100644
--- a/drivers/soc/mediatek/mt8186-mmsys.h
+++ b/drivers/soc/mediatek/mt8186-mmsys.h
@@ -52,6 +52,8 @@
 #define MT8186_DPI0_FROM_DITHER0			1
 #define MT8186_DPI0_FROM_RDMA0				2
 
+#define MT8186_MMSYS_SW0_RST_B				0x160
+
 static const struct mtk_mmsys_routes mmsys_mt8186_routing_table[] = {
 	{
 		DDP_COMPONENT_OVL0, DDP_COMPONENT_RDMA0,
diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
index 0da25069ffb3f5a08fac227fcf79dc2d70afbe47..50c797d70ddd7be00a4f1a71eac03b370c99eb83 100644
--- a/drivers/soc/mediatek/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mtk-mmsys.c
@@ -61,6 +61,7 @@ static const struct mtk_mmsys_driver_data mt8186_mmsys_driver_data = {
 	.clk_driver = "clk-mt8186-mm",
 	.routes = mmsys_mt8186_routing_table,
 	.num_routes = ARRAY_SIZE(mmsys_mt8186_routing_table),
+	.sw0_rst_offset = MT8186_MMSYS_SW0_RST_B,
 };
 
 static const struct mtk_mmsys_driver_data mt8192_mmsys_driver_data = {