diff --git a/drivers/soc/mediatek/mmsys/Makefile b/drivers/soc/mediatek/mmsys/Makefile
index ac03025..25eeb9e5 100644
--- a/drivers/soc/mediatek/mmsys/Makefile
+++ b/drivers/soc/mediatek/mmsys/Makefile
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
 obj-$(CONFIG_MTK_MMSYS) += mt2701-mmsys.o
+obj-$(CONFIG_MTK_MMSYS) += mt8183-mmsys.o
 obj-$(CONFIG_MTK_MMSYS) += mtk-mmsys.o
diff --git a/drivers/soc/mediatek/mmsys/mt8183-mmsys.c b/drivers/soc/mediatek/mmsys/mt8183-mmsys.c
new file mode 100644
index 0000000..8311f89
--- /dev/null
+++ b/drivers/soc/mediatek/mmsys/mt8183-mmsys.c
@@ -0,0 +1,110 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2020 MediaTek Inc.
+
+#include <linux/device.h>
+#include <linux/io.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/soc/mediatek/mtk-mmsys.h>
+
+#define DISP_OVL0_MOUT_EN		0xf00
+#define DISP_OVL0_2L_MOUT_EN		0xf04
+#define DISP_OVL1_2L_MOUT_EN		0xf08
+#define DISP_DITHER0_MOUT_EN		0xf0c
+#define DISP_PATH0_SEL_IN		0xf24
+#define DISP_DSI0_SEL_IN		0xf2c
+#define DISP_DPI0_SEL_IN		0xf30
+#define DISP_RDMA0_SOUT_SEL_IN		0xf50
+#define DISP_RDMA1_SOUT_SEL_IN		0xf54
+
+#define OVL0_MOUT_EN_OVL0_2L			BIT(4)
+#define OVL0_2L_MOUT_EN_DISP_PATH0		BIT(0)
+#define OVL1_2L_MOUT_EN_RDMA1			BIT(4)
+#define DITHER0_MOUT_IN_DSI0			BIT(0)
+#define DISP_PATH0_SEL_IN_OVL0_2L		0x1
+#define DSI0_SEL_IN_RDMA0			0x1
+#define DSI0_SEL_IN_RDMA1			0x3
+#define DPI0_SEL_IN_RDMA0			0x1
+#define DPI0_SEL_IN_RDMA1			0x2
+#define RDMA0_SOUT_COLOR0			0x1
+#define RDMA1_SOUT_DSI0				0x1
+
+static void mtk_mmsys_ddp_mout_en(void __iomem *config_regs,
+				  enum mtk_ddp_comp_id cur,
+				  enum mtk_ddp_comp_id next,
+				  bool enable)
+{
+	unsigned int addr, value, reg;
+
+	if (cur == DDP_COMPONENT_OVL0 && next == DDP_COMPONENT_OVL_2L0) {
+		addr = DISP_OVL0_MOUT_EN;
+		value = OVL0_MOUT_EN_OVL0_2L;
+	} else if (cur == DDP_COMPONENT_OVL_2L0 && next == DDP_COMPONENT_RDMA0) {
+		addr = DISP_OVL0_2L_MOUT_EN;
+		value = OVL0_2L_MOUT_EN_DISP_PATH0;
+	} else if (cur == DDP_COMPONENT_OVL_2L1 && next == DDP_COMPONENT_RDMA1) {
+		addr = DISP_OVL1_2L_MOUT_EN;
+		value = OVL1_2L_MOUT_EN_RDMA1;
+	} else if (cur == DDP_COMPONENT_DITHER && next == DDP_COMPONENT_DSI0) {
+		addr = DISP_DITHER0_MOUT_EN;
+		value = DITHER0_MOUT_IN_DSI0;
+	} else {
+		value = 0;
+	}
+
+	if (value) {
+		reg = readl_relaxed(config_regs + addr);
+
+		if (enable)
+			reg |= value;
+		else
+			reg &= ~value;
+
+		writel_relaxed(reg, config_regs + addr);
+	}
+}
+
+static void mtk_mmsys_ddp_sel_in(void __iomem *config_regs,
+				 enum mtk_ddp_comp_id cur,
+				 enum mtk_ddp_comp_id next,
+				 bool enable)
+{
+	unsigned int addr, value, reg;
+
+	if (cur == DDP_COMPONENT_OVL_2L0 && next == DDP_COMPONENT_RDMA0) {
+		addr = DISP_PATH0_SEL_IN;
+		value = DISP_PATH0_SEL_IN_OVL0_2L;
+	} else if (cur == DDP_COMPONENT_RDMA1 && next == DDP_COMPONENT_DPI0) {
+		addr = DISP_DPI0_SEL_IN;
+		value = DPI0_SEL_IN_RDMA1;
+	} else {
+		value = 0;
+	}
+
+	if (value) {
+		reg = readl_relaxed(config_regs + addr);
+
+		if (enable)
+			reg |= value;
+		else
+			reg &= ~value;
+
+		writel_relaxed(reg, config_regs + addr);
+	}
+}
+
+static void mtk_mmsys_ddp_sout_sel(void __iomem *config_regs,
+				   enum mtk_ddp_comp_id cur,
+				   enum mtk_ddp_comp_id next)
+{
+	if (cur == DDP_COMPONENT_RDMA0 && next == DDP_COMPONENT_COLOR0) {
+		writel_relaxed(RDMA0_SOUT_COLOR0, config_regs + DISP_RDMA0_SOUT_SEL_IN);
+	}
+}
+
+struct mtk_mmsys_conn_funcs mt8183_mmsys_funcs = {
+	.mout_en = mtk_mmsys_ddp_mout_en,
+	.sel_in = mtk_mmsys_ddp_sel_in,
+	.sout_sel = mtk_mmsys_ddp_sout_sel,
+};
diff --git a/drivers/soc/mediatek/mmsys/mtk-mmsys.c b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
index 4ca72f8..075d356 100644
--- a/drivers/soc/mediatek/mmsys/mtk-mmsys.c
+++ b/drivers/soc/mediatek/mmsys/mtk-mmsys.c
@@ -47,6 +47,7 @@ struct mtk_mmsys {
 
 static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
 	.clk_driver = "clk-mt8183-mm",
+	.funcs = &mt8183_mmsys_funcs,
 };
 
 void mtk_mmsys_ddp_connect(struct device *dev,
diff --git a/include/linux/soc/mediatek/mtk-mmsys.h b/include/linux/soc/mediatek/mtk-mmsys.h
index 89000a9..7e2c0fe 100644
--- a/include/linux/soc/mediatek/mtk-mmsys.h
+++ b/include/linux/soc/mediatek/mtk-mmsys.h
@@ -57,6 +57,7 @@ struct mtk_mmsys_conn_funcs {
 };
 
 extern struct mtk_mmsys_conn_funcs mt2701_mmsys_funcs;
+extern struct mtk_mmsys_conn_funcs mt8183_mmsys_funcs;
 
 void mtk_mmsys_ddp_connect(struct device *dev,
 			   enum mtk_ddp_comp_id cur,
