diff --git a/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.c b/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.c
new file mode 100644
index 0000000..c054de9
--- /dev/null
+++ b/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.c
@@ -0,0 +1,402 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <lib/mmio.h>
+#include <lib/utils_def.h>
+#include <mtk_dcm_utils.h>
+
+#define MP_CPUSYS_TOP_ADB_DCM_REG0_MASK		BIT(17)
+#define MP_CPUSYS_TOP_ADB_DCM_REG1_MASK		(BIT(15) | BIT(16) | BIT(17) | \
+						 BIT(18) | BIT(21))
+#define MP_CPUSYS_TOP_ADB_DCM_REG2_MASK		(BIT(15) | BIT(16) | BIT(17) | BIT(18))
+#define MP_CPUSYS_TOP_ADB_DCM_REG0_ON		BIT(17)
+#define MP_CPUSYS_TOP_ADB_DCM_REG1_ON		(BIT(15) | BIT(16) | BIT(17) | \
+						 BIT(18) | BIT(21))
+#define MP_CPUSYS_TOP_ADB_DCM_REG2_ON		(BIT(15) | BIT(16) | BIT(17) | BIT(18))
+#define MP_CPUSYS_TOP_ADB_DCM_REG0_OFF		(0x0 << 17)
+#define MP_CPUSYS_TOP_ADB_DCM_REG1_OFF		((0x0 << 15) | (0x0 << 16) | \
+						 (0x0 << 17) | (0x0 << 18) | \
+						 (0x0 << 21))
+#define MP_CPUSYS_TOP_ADB_DCM_REG2_OFF		((0x0 << 15) | (0x0 << 16) | \
+						 (0x0 << 17) | (0x0 << 18))
+
+bool dcm_mp_cpusys_top_adb_dcm_is_on(void)
+{
+	bool ret = true;
+
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP_ADB_DCM_CFG0,
+			       MP_CPUSYS_TOP_ADB_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_ADB_DCM_REG0_ON);
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP_ADB_DCM_CFG4,
+			       MP_CPUSYS_TOP_ADB_DCM_REG1_MASK,
+			       MP_CPUSYS_TOP_ADB_DCM_REG1_ON);
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+			       MP_CPUSYS_TOP_ADB_DCM_REG2_MASK,
+			       MP_CPUSYS_TOP_ADB_DCM_REG2_ON);
+
+	return ret;
+}
+
+void dcm_mp_cpusys_top_adb_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_adb_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_ADB_DCM_CFG0,
+				   MP_CPUSYS_TOP_ADB_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG0_ON);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_ADB_DCM_CFG4,
+				   MP_CPUSYS_TOP_ADB_DCM_REG1_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG1_ON);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+				   MP_CPUSYS_TOP_ADB_DCM_REG2_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG2_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_adb_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_ADB_DCM_CFG0,
+				   MP_CPUSYS_TOP_ADB_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG0_OFF);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_ADB_DCM_CFG4,
+				   MP_CPUSYS_TOP_ADB_DCM_REG1_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG1_OFF);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+				   MP_CPUSYS_TOP_ADB_DCM_REG2_MASK,
+				   MP_CPUSYS_TOP_ADB_DCM_REG2_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_APB_DCM_REG0_MASK	BIT(5)
+#define MP_CPUSYS_TOP_APB_DCM_REG1_MASK	BIT(8)
+#define MP_CPUSYS_TOP_APB_DCM_REG2_MASK	BIT(16)
+#define MP_CPUSYS_TOP_APB_DCM_REG0_ON	BIT(5)
+#define MP_CPUSYS_TOP_APB_DCM_REG1_ON	BIT(8)
+#define MP_CPUSYS_TOP_APB_DCM_REG2_ON	BIT(16)
+#define MP_CPUSYS_TOP_APB_DCM_REG0_OFF	(0x0 << 5)
+#define MP_CPUSYS_TOP_APB_DCM_REG1_OFF	(0x0 << 8)
+#define MP_CPUSYS_TOP_APB_DCM_REG2_OFF	(0x0 << 16)
+
+bool dcm_mp_cpusys_top_apb_dcm_is_on(void)
+{
+	bool ret = true;
+
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+			       MP_CPUSYS_TOP_APB_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_APB_DCM_REG0_ON);
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+			       MP_CPUSYS_TOP_APB_DCM_REG1_MASK,
+			       MP_CPUSYS_TOP_APB_DCM_REG1_ON);
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+			       MP_CPUSYS_TOP_APB_DCM_REG2_MASK,
+			       MP_CPUSYS_TOP_APB_DCM_REG2_ON);
+
+	return ret;
+}
+
+void dcm_mp_cpusys_top_apb_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_apb_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG0_ON);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG1_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG1_ON);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG2_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG2_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_apb_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG0_OFF);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCUSYS_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG1_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG1_OFF);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+				   MP_CPUSYS_TOP_APB_DCM_REG2_MASK,
+				   MP_CPUSYS_TOP_APB_DCM_REG2_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_MASK (BIT(11) | BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_ON (BIT(11) | BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_OFF ((0x0 << 11) | \
+						(0x0 << 24) | \
+						(0x0 << 25))
+
+bool dcm_mp_cpusys_top_bus_pll_div_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+			       MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_bus_pll_div_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_bus_pll_div_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+				   MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_bus_pll_div_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+				   MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_BUS_PLL_DIV_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_MASK	BIT(0)
+#define MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_ON	BIT(0)
+#define MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_OFF	(0x0 << 0)
+
+bool dcm_mp_cpusys_top_core_stall_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+			       MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_core_stall_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_core_stall_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+				   MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_core_stall_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+				   MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CORE_STALL_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_CPUBIU_DCM_REG0_MASK	(0xffff << 0)
+#define MP_CPUSYS_TOP_CPUBIU_DCM_REG0_ON	(0xffff << 0)
+#define MP_CPUSYS_TOP_CPUBIU_DCM_REG0_OFF	(0x0 << 0)
+
+bool dcm_mp_cpusys_top_cpubiu_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_MCSIC_DCM0,
+			       MP_CPUSYS_TOP_CPUBIU_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_CPUBIU_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_cpubiu_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_cpubiu_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCSIC_DCM0,
+				   MP_CPUSYS_TOP_CPUBIU_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPUBIU_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_cpubiu_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MCSIC_DCM0,
+				   MP_CPUSYS_TOP_CPUBIU_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPUBIU_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_MASK (BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_ON (BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_OFF ((0x0 << 24) | (0x0 << 25))
+
+bool dcm_mp_cpusys_top_cpu_pll_div_0_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_CPU_PLLDIV_CFG0,
+			       MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_cpu_pll_div_0_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_cpu_pll_div_0_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_CPU_PLLDIV_CFG0,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_cpu_pll_div_0_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_CPU_PLLDIV_CFG0,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_0_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_MASK (BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_ON (BIT(24) | BIT(25))
+#define MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_OFF ((0x0 << 24) | (0x0 << 25))
+
+bool dcm_mp_cpusys_top_cpu_pll_div_1_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_CPU_PLLDIV_CFG1,
+			       MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_cpu_pll_div_1_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_cpu_pll_div_1_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_CPU_PLLDIV_CFG1,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_cpu_pll_div_1_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_CPU_PLLDIV_CFG1,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_CPU_PLL_DIV_1_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_MASK	BIT(4)
+#define MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_ON	BIT(4)
+#define MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_OFF	(0x0 << 4)
+
+bool dcm_mp_cpusys_top_fcm_stall_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+			       MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_fcm_stall_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_fcm_stall_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+				   MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_fcm_stall_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG7,
+				   MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_FCM_STALL_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_MASK	BIT(31)
+#define MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_ON		BIT(31)
+#define MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_OFF	(0x0U << 31)
+
+bool dcm_mp_cpusys_top_last_cor_idle_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+			       MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_last_cor_idle_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_last_cor_idle_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+				   MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_last_cor_idle_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_BUS_PLLDIV_CFG,
+				   MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_LAST_COR_IDLE_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_MISC_DCM_REG0_MASK (BIT(1) | BIT(4))
+#define MP_CPUSYS_TOP_MISC_DCM_REG0_ON (BIT(1) | BIT(4))
+#define MP_CPUSYS_TOP_MISC_DCM_REG0_OFF ((0x0 << 1) | (0x0 << 4))
+
+bool dcm_mp_cpusys_top_misc_dcm_is_on(void)
+{
+	return dcm_check_state(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+			       MP_CPUSYS_TOP_MISC_DCM_REG0_MASK,
+			       MP_CPUSYS_TOP_MISC_DCM_REG0_ON);
+}
+
+void dcm_mp_cpusys_top_misc_dcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_misc_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_MISC_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_MISC_DCM_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_misc_dcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_MISC_DCM_REG0_MASK,
+				   MP_CPUSYS_TOP_MISC_DCM_REG0_OFF);
+	}
+}
+
+#define MP_CPUSYS_TOP_MP0_QDCM_REG0_MASK BIT(3)
+#define MP_CPUSYS_TOP_MP0_QDCM_REG1_MASK (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+#define MP_CPUSYS_TOP_MP0_QDCM_REG0_ON BIT(3)
+#define MP_CPUSYS_TOP_MP0_QDCM_REG1_ON (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+#define MP_CPUSYS_TOP_MP0_QDCM_REG0_OFF ((0x0 << 3))
+#define MP_CPUSYS_TOP_MP0_QDCM_REG1_OFF ((0x0 << 0) | (0x0 << 1) | \
+					 (0x0 << 2) | (0x0 << 3))
+
+bool dcm_mp_cpusys_top_mp0_qdcm_is_on(void)
+{
+	bool ret = true;
+
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+			       MP_CPUSYS_TOP_MP0_QDCM_REG0_MASK,
+			       MP_CPUSYS_TOP_MP0_QDCM_REG0_ON);
+	ret &= dcm_check_state(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+			       MP_CPUSYS_TOP_MP0_QDCM_REG1_MASK,
+			       MP_CPUSYS_TOP_MP0_QDCM_REG1_ON);
+
+	return ret;
+}
+
+void dcm_mp_cpusys_top_mp0_qdcm(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'mp_cpusys_top_mp0_qdcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG0_MASK,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG0_ON);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG1_MASK,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG1_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'mp_cpusys_top_mp0_qdcm'" */
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP_MISC_DCM_CFG0,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG0_MASK,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG0_OFF);
+		mmio_clrsetbits_32(MP_CPUSYS_TOP_MP0_DCM_CFG0,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG1_MASK,
+				   MP_CPUSYS_TOP_MP0_QDCM_REG1_OFF);
+	}
+}
+
+#define CPCCFG_REG_EMI_WFIFO_REG0_MASK (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+#define CPCCFG_REG_EMI_WFIFO_REG0_ON (BIT(0) | BIT(1) | BIT(2) | BIT(3))
+#define CPCCFG_REG_EMI_WFIFO_REG0_OFF ((0x0 << 0) | (0x0 << 1) | \
+				       (0x0 << 2) | (0x0 << 3))
+
+bool dcm_cpccfg_reg_emi_wfifo_is_on(void)
+{
+	return dcm_check_state(CPCCFG_REG_EMI_WFIFO,
+			       CPCCFG_REG_EMI_WFIFO_REG0_MASK,
+			       CPCCFG_REG_EMI_WFIFO_REG0_ON);
+}
+
+void dcm_cpccfg_reg_emi_wfifo(bool on)
+{
+	if (on) {
+		/* TINFO = "Turn ON DCM 'cpccfg_reg_emi_wfifo'" */
+		mmio_clrsetbits_32(CPCCFG_REG_EMI_WFIFO,
+				   CPCCFG_REG_EMI_WFIFO_REG0_MASK,
+				   CPCCFG_REG_EMI_WFIFO_REG0_ON);
+	} else {
+		/* TINFO = "Turn OFF DCM 'cpccfg_reg_emi_wfifo'" */
+		mmio_clrsetbits_32(CPCCFG_REG_EMI_WFIFO,
+				   CPCCFG_REG_EMI_WFIFO_REG0_MASK,
+				   CPCCFG_REG_EMI_WFIFO_REG0_OFF);
+	}
+}
diff --git a/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.h b/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.h
new file mode 100644
index 0000000..5d758dd
--- /dev/null
+++ b/plat/mediatek/drivers/dcm/mt8188/mtk_dcm_utils.h
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MTK_DCM_UTILS_H
+#define MTK_DCM_UTILS_H
+
+#include <stdbool.h>
+
+#include <mtk_dcm.h>
+#include <platform_def.h>
+
+/* Base */
+#define MP_CPUSYS_TOP_BASE	(MCUCFG_BASE + 0x8000)
+#define CPCCFG_REG_BASE		(MCUCFG_BASE + 0xA800)
+
+/* Register Definition */
+#define CPCCFG_REG_EMI_WFIFO		(CPCCFG_REG_BASE + 0x100)
+#define MP_CPUSYS_TOP_CPU_PLLDIV_CFG0	(MP_CPUSYS_TOP_BASE + 0x22a0)
+#define MP_CPUSYS_TOP_CPU_PLLDIV_CFG1	(MP_CPUSYS_TOP_BASE + 0x22a4)
+#define MP_CPUSYS_TOP_BUS_PLLDIV_CFG	(MP_CPUSYS_TOP_BASE + 0x22e0)
+#define MP_CPUSYS_TOP_MCSIC_DCM0	(MP_CPUSYS_TOP_BASE + 0x2440)
+#define MP_CPUSYS_TOP_MP_ADB_DCM_CFG0	(MP_CPUSYS_TOP_BASE + 0x2500)
+#define MP_CPUSYS_TOP_MP_ADB_DCM_CFG4	(MP_CPUSYS_TOP_BASE + 0x2510)
+#define MP_CPUSYS_TOP_MP_MISC_DCM_CFG0	(MP_CPUSYS_TOP_BASE + 0x2518)
+#define MP_CPUSYS_TOP_MCUSYS_DCM_CFG0	(MP_CPUSYS_TOP_BASE + 0x25c0)
+#define MP_CPUSYS_TOP_MP0_DCM_CFG0	(MP_CPUSYS_TOP_BASE + 0x4880)
+#define MP_CPUSYS_TOP_MP0_DCM_CFG7	(MP_CPUSYS_TOP_BASE + 0x489c)
+
+/* MP_CPUSYS_TOP */
+bool dcm_mp_cpusys_top_adb_dcm_is_on(void);
+void dcm_mp_cpusys_top_adb_dcm(bool on);
+bool dcm_mp_cpusys_top_apb_dcm_is_on(void);
+void dcm_mp_cpusys_top_apb_dcm(bool on);
+bool dcm_mp_cpusys_top_bus_pll_div_dcm_is_on(void);
+void dcm_mp_cpusys_top_bus_pll_div_dcm(bool on);
+bool dcm_mp_cpusys_top_core_stall_dcm_is_on(void);
+void dcm_mp_cpusys_top_core_stall_dcm(bool on);
+bool dcm_mp_cpusys_top_cpubiu_dcm_is_on(void);
+void dcm_mp_cpusys_top_cpubiu_dcm(bool on);
+bool dcm_mp_cpusys_top_cpu_pll_div_0_dcm_is_on(void);
+void dcm_mp_cpusys_top_cpu_pll_div_0_dcm(bool on);
+bool dcm_mp_cpusys_top_cpu_pll_div_1_dcm_is_on(void);
+void dcm_mp_cpusys_top_cpu_pll_div_1_dcm(bool on);
+bool dcm_mp_cpusys_top_fcm_stall_dcm_is_on(void);
+void dcm_mp_cpusys_top_fcm_stall_dcm(bool on);
+bool dcm_mp_cpusys_top_last_cor_idle_dcm_is_on(void);
+void dcm_mp_cpusys_top_last_cor_idle_dcm(bool on);
+bool dcm_mp_cpusys_top_misc_dcm_is_on(void);
+void dcm_mp_cpusys_top_misc_dcm(bool on);
+bool dcm_mp_cpusys_top_mp0_qdcm_is_on(void);
+void dcm_mp_cpusys_top_mp0_qdcm(bool on);
+/* CPCCFG_REG */
+bool dcm_cpccfg_reg_emi_wfifo_is_on(void);
+void dcm_cpccfg_reg_emi_wfifo(bool on);
+
+#endif
diff --git a/plat/mediatek/drivers/dcm/mtk_dcm.c b/plat/mediatek/drivers/dcm/mtk_dcm.c
new file mode 100644
index 0000000..ca79a20
--- /dev/null
+++ b/plat/mediatek/drivers/dcm/mtk_dcm.c
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <common/debug.h>
+#include <lib/mmio.h>
+#include <lib/mtk_init/mtk_init.h>
+#include <mtk_dcm.h>
+#include <mtk_dcm_utils.h>
+
+static void dcm_armcore(bool mode)
+{
+	dcm_mp_cpusys_top_bus_pll_div_dcm(mode);
+	dcm_mp_cpusys_top_cpu_pll_div_0_dcm(mode);
+	dcm_mp_cpusys_top_cpu_pll_div_1_dcm(mode);
+}
+
+static void dcm_mcusys(bool on)
+{
+	dcm_mp_cpusys_top_adb_dcm(on);
+	dcm_mp_cpusys_top_apb_dcm(on);
+	dcm_mp_cpusys_top_cpubiu_dcm(on);
+	dcm_mp_cpusys_top_misc_dcm(on);
+	dcm_mp_cpusys_top_mp0_qdcm(on);
+
+	/* CPCCFG_REG */
+	dcm_cpccfg_reg_emi_wfifo(on);
+	dcm_mp_cpusys_top_last_cor_idle_dcm(on);
+}
+
+static void dcm_stall(bool on)
+{
+	dcm_mp_cpusys_top_core_stall_dcm(on);
+	dcm_mp_cpusys_top_fcm_stall_dcm(on);
+}
+
+static bool check_dcm_state(void)
+{
+	bool ret = true;
+
+	ret &= dcm_mp_cpusys_top_bus_pll_div_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_cpu_pll_div_0_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_cpu_pll_div_1_dcm_is_on();
+
+	ret &= dcm_mp_cpusys_top_adb_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_apb_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_cpubiu_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_misc_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_mp0_qdcm_is_on();
+	ret &= dcm_cpccfg_reg_emi_wfifo_is_on();
+	ret &= dcm_mp_cpusys_top_last_cor_idle_dcm_is_on();
+
+	ret &= dcm_mp_cpusys_top_core_stall_dcm_is_on();
+	ret &= dcm_mp_cpusys_top_fcm_stall_dcm_is_on();
+
+	return ret;
+}
+
+bool dcm_check_state(uintptr_t addr, unsigned int mask, unsigned int compare)
+{
+	return ((mmio_read_32(addr) & mask) == compare);
+}
+
+int dcm_set_init(void)
+{
+	int ret;
+
+	dcm_armcore(true);
+	dcm_mcusys(true);
+	dcm_stall(true);
+
+	if (check_dcm_state() == false) {
+		ERROR("Failed to set default dcm on!!\n");
+		ret = -1;
+	} else {
+		INFO("%s, dcm pass\n", __func__);
+		ret = 0;
+	}
+
+	return ret;
+}
+MTK_PLAT_SETUP_0_INIT(dcm_set_init);
diff --git a/plat/mediatek/drivers/dcm/mtk_dcm.h b/plat/mediatek/drivers/dcm/mtk_dcm.h
new file mode 100644
index 0000000..05f8d45
--- /dev/null
+++ b/plat/mediatek/drivers/dcm/mtk_dcm.h
@@ -0,0 +1,15 @@
+/*
+ * Copyright (c) 2022, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef MTK_DCM_H
+#define MTK_DCM_H
+
+#include <stdbool.h>
+
+bool dcm_check_state(uintptr_t addr, unsigned int mask, unsigned int compare);
+int dcm_set_init(void);
+
+#endif /* #ifndef MTK_DCM_H */
diff --git a/plat/mediatek/drivers/dcm/rules.mk b/plat/mediatek/drivers/dcm/rules.mk
new file mode 100644
index 0000000..a8ee05e
--- /dev/null
+++ b/plat/mediatek/drivers/dcm/rules.mk
@@ -0,0 +1,17 @@
+#
+# Copyright (c) 2022, MediaTek Inc. All rights reserved.
+#
+# SPDX-License-Identifier: BSD-3-Clause
+#
+
+LOCAL_DIR := $(call GET_LOCAL_DIR)
+
+MODULE := mtk_dcm
+
+LOCAL_SRCS-y := ${LOCAL_DIR}/mtk_dcm.c
+LOCAL_SRCS-y += ${LOCAL_DIR}/${MTK_SOC}/mtk_dcm_utils.c
+
+PLAT_INCLUDES += -I${LOCAL_DIR}
+PLAT_INCLUDES += -I${LOCAL_DIR}/${MTK_SOC}
+
+$(eval $(call MAKE_MODULE,$(MODULE),$(LOCAL_SRCS-y),$(MTK_BL)))
diff --git a/plat/mediatek/mt8188/platform.mk b/plat/mediatek/mt8188/platform.mk
index a76dff3..97f303c 100644
--- a/plat/mediatek/mt8188/platform.mk
+++ b/plat/mediatek/mt8188/platform.mk
@@ -24,6 +24,7 @@
 MODULES-y += $(MTK_PLAT)/lib/pm
 MODULES-y += $(MTK_PLAT)/lib/system_reset
 MODULES-y += $(MTK_PLAT)/drivers/cirq
+MODULES-y += $(MTK_PLAT)/drivers/dcm
 MODULES-y += $(MTK_PLAT)/drivers/dp
 MODULES-y += $(MTK_PLAT)/drivers/gic600
 MODULES-y += $(MTK_PLAT)/drivers/gpio