diff --git a/plat/mediatek/mt8173/aarch64/plat_helpers.S b/plat/mediatek/mt8173/aarch64/plat_helpers.S
index af3a4073b8cec38aefcfac801ac7a1f84347e249..3347f55f7227cc08ed2e1357645e25c2887c2b4d 100644
--- a/plat/mediatek/mt8173/aarch64/plat_helpers.S
+++ b/plat/mediatek/mt8173/aarch64/plat_helpers.S
@@ -34,6 +34,7 @@
 	.globl	plat_secondary_cold_boot_setup
 	.globl	plat_report_exception
 	.globl	platform_is_primary_cpu
+	.globl  plat_my_core_pos
 	.globl	plat_crash_console_init
 	.globl	plat_crash_console_putc
 
@@ -59,6 +60,22 @@ func platform_is_primary_cpu
 	ret
 endfunc platform_is_primary_cpu
 
+#if !ENABLE_PLAT_COMPAT
+	/* -----------------------------------------------------
+	 * unsigned int plat_my_core_pos(void);
+	 *
+	 * result: CorePos = CoreId + (ClusterId << 2)
+	 * -----------------------------------------------------
+	 */
+func plat_my_core_pos
+	mrs     x0, mpidr_el1
+	and     x1, x0, #MPIDR_CPU_MASK
+	and     x0, x0, #MPIDR_CLUSTER_MASK
+	add     x0, x1, x0, LSR #6
+	ret
+endfunc plat_my_core_pos
+#endif
+
 	/* ---------------------------------------------
 	 * int plat_crash_console_init(void)
 	 * Function to initialize the crash console
diff --git a/plat/mediatek/mt8173/bl31_plat_setup.c b/plat/mediatek/mt8173/bl31_plat_setup.c
index ef18d07955e043102f61eb90417ce2985aad1a4e..92c3494ee5bf0c3d45e62be3b2beeab7bce53772 100644
--- a/plat/mediatek/mt8173/bl31_plat_setup.c
+++ b/plat/mediatek/mt8173/bl31_plat_setup.c
@@ -27,7 +27,6 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
-#include <arm_gic.h>
 #include <assert.h>
 #include <bl_common.h>
 #include <common_def.h>
@@ -37,6 +36,7 @@
 #include <mcucfg.h>
 #include <mmio.h>
 #include <mtcmos.h>
+#include <plat_arm.h>
 #include <plat_private.h>
 #include <platform.h>
 #include <spm.h>
@@ -159,11 +159,13 @@ void bl31_platform_setup(void)
 	generic_delay_timer_init();
 
 	/* Initialize the gic cpu and distributor interfaces */
-	plat_mt_gic_init();
-	arm_gic_setup();
+	plat_arm_gic_driver_init();
+	plat_arm_gic_init();
 
+#if ENABLE_PLAT_COMPAT
 	/* Topologies are best known to the platform. */
 	mt_setup_topology();
+#endif
 
 	/* Initialize spm at boot time */
 	spm_boot_init();
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c
index b89cd9765a9ad1c059f8c390059fdb5440647b3b..4cafd29e7aac64bceda5b98d39d9adc440ff7dd8 100644
--- a/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c
+++ b/plat/mediatek/mt8173/drivers/spm/spm_hotplug.c
@@ -27,6 +27,7 @@
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
  */
+#include <arch.h>
 #include <mmio.h>
 #include <mt8173_def.h>
 #include <platform.h>
@@ -258,7 +259,9 @@ void spm_hotplug_on(unsigned long mpidr)
 {
 	unsigned long linear_id;
 
-	linear_id = platform_get_core_pos(mpidr);
+	linear_id = ((mpidr & MPIDR_CLUSTER_MASK) >> 6) |
+			(mpidr & MPIDR_CPU_MASK);
+
 	spm_lock_get();
 	if (is_hotplug_ready() == 0) {
 		spm_mcdi_wakeup_all_cores();
@@ -277,7 +280,9 @@ void spm_hotplug_off(unsigned long mpidr)
 {
 	unsigned long linear_id;
 
-	linear_id = platform_get_core_pos(mpidr);
+	linear_id = ((mpidr & MPIDR_CLUSTER_MASK) >> 6) |
+			(mpidr & MPIDR_CPU_MASK);
+
 	spm_lock_get();
 	if (is_hotplug_ready() == 0) {
 		spm_mcdi_wakeup_all_cores();
diff --git a/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c
index d715735ded93302d526402d21fd2ea471220ef20..4d8422fca465fc1f08d086fa9c986fa201c10dd9 100644
--- a/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c
+++ b/plat/mediatek/mt8173/drivers/spm/spm_mcdi.c
@@ -511,7 +511,10 @@ void spm_mcdi_prepare_for_off_state(unsigned long mpidr, unsigned int afflvl)
 
 void spm_mcdi_finish_for_on_state(unsigned long mpidr, unsigned int afflvl)
 {
-	unsigned long linear_id = platform_get_core_pos(mpidr);
+	unsigned long linear_id;
+
+	linear_id = ((mpidr & MPIDR_CLUSTER_MASK) >> 6) |
+			(mpidr & MPIDR_CPU_MASK);
 
 	spm_lock_get();
 	spm_mcdi_clear_cputop_pwrctrl_for_cluster_on(mpidr);
diff --git a/plat/mediatek/mt8173/include/mt8173_def.h b/plat/mediatek/mt8173/include/mt8173_def.h
index 87e9c046e17ee3bfc99bd426d9b678581336099c..21c36b5e66cfaf67a8bb41cec7dd6ef3f359ef30 100644
--- a/plat/mediatek/mt8173/include/mt8173_def.h
+++ b/plat/mediatek/mt8173/include/mt8173_def.h
@@ -126,4 +126,51 @@
 #define MT_IRQ_SEC_SGI_6	14
 #define MT_IRQ_SEC_SGI_7	15
 
+/*
+ *  Macros for local power states in MTK platforms encoded by State-ID field
+ *  within the power-state parameter.
+ */
+/* Local power state for power domains in Run state. */
+#define MTK_LOCAL_STATE_RUN     0
+/* Local power state for retention. Valid only for CPU power domains */
+#define MTK_LOCAL_STATE_RET     1
+/* Local power state for OFF/power-down. Valid for CPU and cluster power
+ * domains
+ */
+#define MTK_LOCAL_STATE_OFF     2
+
+#if PSCI_EXTENDED_STATE_ID
+/*
+ * Macros used to parse state information from State-ID if it is using the
+ * recommended encoding for State-ID.
+ */
+#define MTK_LOCAL_PSTATE_WIDTH		4
+#define MTK_LOCAL_PSTATE_MASK		((1 << MTK_LOCAL_PSTATE_WIDTH) - 1)
+
+/* Macros to construct the composite power state */
+
+/* Make composite power state parameter till power level 0 */
+
+#define mtk_make_pwrstate_lvl0(lvl0_state, pwr_lvl, type) \
+	(((lvl0_state) << PSTATE_ID_SHIFT) | ((type) << PSTATE_TYPE_SHIFT))
+#else
+#define mtk_make_pwrstate_lvl0(lvl0_state, pwr_lvl, type) \
+		(((lvl0_state) << PSTATE_ID_SHIFT) | \
+		((pwr_lvl) << PSTATE_PWR_LVL_SHIFT) | \
+		((type) << PSTATE_TYPE_SHIFT))
+
+#endif /* __PSCI_EXTENDED_STATE_ID__ */
+
+/* Make composite power state parameter till power level 1 */
+#define mtk_make_pwrstate_lvl1(lvl1_state, lvl0_state, pwr_lvl, type) \
+		(((lvl1_state) << MTK_LOCAL_PSTATE_WIDTH) | \
+		mtk_make_pwrstate_lvl0(lvl0_state, pwr_lvl, type))
+
+/* Make composite power state parameter till power level 2 */
+#define mtk_make_pwrstate_lvl2( \
+		lvl2_state, lvl1_state, lvl0_state, pwr_lvl, type) \
+		(((lvl2_state) << (MTK_LOCAL_PSTATE_WIDTH * 2)) | \
+		mtk_make_pwrstate_lvl1(lvl1_state, lvl0_state, pwr_lvl, type))
+
+
 #endif /* __MT8173_DEF_H__ */
diff --git a/plat/mediatek/mt8173/include/plat_macros.S b/plat/mediatek/mt8173/include/plat_macros.S
index 018a790a745372a6aaf156b364b20e783ecbe01c..f95fd5b4f5c790655ff4315d20ebde635ea2c1b0 100644
--- a/plat/mediatek/mt8173/include/plat_macros.S
+++ b/plat/mediatek/mt8173/include/plat_macros.S
@@ -29,7 +29,8 @@
  */
 
 #include <cci.h>
-#include <gic_v2.h>
+#include <gic_common.h>
+#include <gicv2.h>
 #include <mt8173_def.h>
 
 .section .rodata.gic_reg_name, "aS"
diff --git a/plat/mediatek/mt8173/include/plat_private.h b/plat/mediatek/mt8173/include/plat_private.h
index ae50e449327246829e52a4ff1b497ada45b14b94..9488b88b1c5a94e90d2412daf1fd8a10e4b22d80 100644
--- a/plat/mediatek/mt8173/include/plat_private.h
+++ b/plat/mediatek/mt8173/include/plat_private.h
@@ -45,9 +45,6 @@ void plat_cci_init(void);
 void plat_cci_enable(void);
 void plat_cci_disable(void);
 
-/* Declarations for plat_mt_gic.c */
-void plat_mt_gic_init(void);
-
 /* Declarations for plat_topology.c */
 int mt_setup_topology(void);
 
diff --git a/plat/mediatek/mt8173/include/platform_def.h b/plat/mediatek/mt8173/include/platform_def.h
index 8f771e325fbcaefaf29000d9ecd71038a6f2c9de..bb69920f4d5aaaecbfe50d2dc6ea62f87bf620c5 100644
--- a/plat/mediatek/mt8173/include/platform_def.h
+++ b/plat/mediatek/mt8173/include/platform_def.h
@@ -31,6 +31,8 @@
 #ifndef __PLATFORM_DEF_H__
 #define __PLATFORM_DEF_H__
 
+#include "mt8173_def.h"
+
 
 /*******************************************************************************
  * Platform binary types for linking
@@ -56,6 +58,11 @@
 #define FIRMWARE_WELCOME_STR		"Booting Trusted Firmware\n"
 
 #define PLATFORM_MAX_AFFLVL		MPIDR_AFFLVL2
+#if !ENABLE_PLAT_COMPAT
+#define PLAT_MAX_PWR_LVL		2
+#define PLAT_MAX_RET_STATE		1
+#define PLAT_MAX_OFF_STATE		2
+#endif
 #define PLATFORM_SYSTEM_COUNT		1
 #define PLATFORM_CLUSTER_COUNT		2
 #define PLATFORM_CLUSTER0_CORE_COUNT	4
@@ -111,7 +118,8 @@
 /*******************************************************************************
  * Platform specific page table and MMU setup constants
  ******************************************************************************/
-#define ADDR_SPACE_SIZE		(1ull << 32)
+#define PLAT_PHY_ADDR_SPACE_SIZE	(1ull << 32)
+#define PLAT_VIRT_ADDR_SPACE_SIZE	(1ull << 32)
 #define MAX_XLAT_TABLES		4
 #define MAX_MMAP_REGIONS	16
 
@@ -127,4 +135,19 @@
 #define CACHE_WRITEBACK_SHIFT	6
 #define CACHE_WRITEBACK_GRANULE	(1 << CACHE_WRITEBACK_SHIFT)
 
+
+#define PLAT_ARM_GICD_BASE      BASE_GICD_BASE
+#define PLAT_ARM_GICC_BASE      BASE_GICC_BASE
+
+#define PLAT_ARM_G1S_IRQS       MT_IRQ_SEC_SGI_0, \
+				MT_IRQ_SEC_SGI_1, \
+				MT_IRQ_SEC_SGI_2, \
+				MT_IRQ_SEC_SGI_3, \
+				MT_IRQ_SEC_SGI_4, \
+				MT_IRQ_SEC_SGI_5, \
+				MT_IRQ_SEC_SGI_6, \
+				MT_IRQ_SEC_SGI_7
+
+#define PLAT_ARM_G0_IRQS
+
 #endif /* __PLATFORM_DEF_H__ */
diff --git a/plat/mediatek/mt8173/plat_pm.c b/plat/mediatek/mt8173/plat_pm.c
index 6bb8a9b5a58d2b9866a677300fc2cdc214fff8bf..d727967e85d0736ca1b1ca8445f25b1e44b252c2 100644
--- a/plat/mediatek/mt8173/plat_pm.c
+++ b/plat/mediatek/mt8173/plat_pm.c
@@ -29,17 +29,18 @@
  */
 
 #include <arch_helpers.h>
-#include <arm_gic.h>
 #include <assert.h>
 #include <bakery_lock.h>
 #include <cci.h>
 #include <console.h>
 #include <debug.h>
 #include <errno.h>
+#include <gicv2.h>
 #include <mcucfg.h>
 #include <mmio.h>
 #include <mt8173_def.h>
 #include <mt_cpuxgpt.h> /* generic_timer_backup() */
+#include <plat_arm.h>
 #include <plat_private.h>
 #include <power_tracer.h>
 #include <psci.h>
@@ -49,6 +50,44 @@
 #include <spm_mcdi.h>
 #include <spm_suspend.h>
 
+#if !ENABLE_PLAT_COMPAT
+#define MTK_PWR_LVL0	0
+#define MTK_PWR_LVL1	1
+#define MTK_PWR_LVL2	2
+
+/* Macros to read the MTK power domain state */
+#define MTK_CORE_PWR_STATE(state)	(state)->pwr_domain_state[MTK_PWR_LVL0]
+#define MTK_CLUSTER_PWR_STATE(state)	(state)->pwr_domain_state[MTK_PWR_LVL1]
+#define MTK_SYSTEM_PWR_STATE(state)	((PLAT_MAX_PWR_LVL > MTK_PWR_LVL1) ?\
+			(state)->pwr_domain_state[MTK_PWR_LVL2] : 0)
+#endif
+
+#if PSCI_EXTENDED_STATE_ID
+/*
+ *  The table storing the valid idle power states. Ensure that the
+ *  array entries are populated in ascending order of state-id to
+ *  enable us to use binary search during power state validation.
+ *  The table must be terminated by a NULL entry.
+ */
+const unsigned int mtk_pm_idle_states[] = {
+	/* State-id - 0x001 */
+	mtk_make_pwrstate_lvl2(MTK_LOCAL_STATE_RUN, MTK_LOCAL_STATE_RUN,
+		MTK_LOCAL_STATE_RET, MTK_PWR_LVL0, PSTATE_TYPE_STANDBY),
+	/* State-id - 0x002 */
+	mtk_make_pwrstate_lvl2(MTK_LOCAL_STATE_RUN, MTK_LOCAL_STATE_RUN,
+		MTK_LOCAL_STATE_OFF, MTK_PWR_LVL0, PSTATE_TYPE_POWERDOWN),
+	/* State-id - 0x022 */
+	mtk_make_pwrstate_lvl2(MTK_LOCAL_STATE_RUN, MTK_LOCAL_STATE_OFF,
+		MTK_LOCAL_STATE_OFF, MTK_PWR_LVL1, PSTATE_TYPE_POWERDOWN),
+#if PLAT_MAX_PWR_LVL > MTK_PWR_LVL1
+	/* State-id - 0x222 */
+	mtk_make_pwrstate_lvl2(MTK_LOCAL_STATE_OFF, MTK_LOCAL_STATE_OFF,
+		MTK_LOCAL_STATE_OFF, MTK_PWR_LVL2, PSTATE_TYPE_POWERDOWN),
+#endif
+	0,
+};
+#endif
+
 struct core_context {
 	unsigned long timer_data[8];
 	unsigned int count;
@@ -219,6 +258,7 @@ static void mt_platform_restore_context(unsigned long mpidr)
 	mt_cpu_restore(mpidr);
 }
 
+#if ENABLE_PLAT_COMPAT
 /*******************************************************************************
 * Private function which is used to determine if any platform actions
 * should be performed for the specified affinity instance given its
@@ -270,11 +310,25 @@ static void plat_affinst_standby(unsigned int power_state)
 		wfi();
 	}
 }
+#else
+static void plat_cpu_standby(plat_local_state_t cpu_state)
+{
+	unsigned int scr;
+
+	scr = read_scr_el3();
+	write_scr_el3(scr | SCR_IRQ_BIT);
+	isb();
+	dsb();
+	wfi();
+	write_scr_el3(scr);
+}
+#endif
 
 /*******************************************************************************
  * MTK_platform handler called when an affinity instance is about to be turned
  * on. The level and mpidr determine the affinity instance.
  ******************************************************************************/
+#if ENABLE_PLAT_COMPAT
 static int plat_affinst_on(unsigned long mpidr,
 		    unsigned long sec_entrypoint,
 		    unsigned int afflvl,
@@ -308,6 +362,32 @@ static int plat_affinst_on(unsigned long mpidr,
 
 	return rc;
 }
+#else
+static uintptr_t secure_entrypoint;
+
+static int plat_power_domain_on(unsigned long mpidr)
+{
+	int rc = PSCI_E_SUCCESS;
+	unsigned long cpu_id;
+	unsigned long cluster_id;
+	uintptr_t rv;
+
+	cpu_id = mpidr & MPIDR_CPU_MASK;
+	cluster_id = mpidr & MPIDR_CLUSTER_MASK;
+
+	if (cluster_id)
+		rv = (uintptr_t)&mt8173_mcucfg->mp1_rv_addr[cpu_id].rv_addr_lw;
+	else
+		rv = (uintptr_t)&mt8173_mcucfg->mp0_rv_addr[cpu_id].rv_addr_lw;
+
+	mmio_write_32(rv, secure_entrypoint);
+	INFO("mt_on[%ld:%ld], entry %x\n",
+		cluster_id, cpu_id, mmio_read_32(rv));
+
+	spm_hotplug_on(mpidr);
+	return rc;
+}
+#endif
 
 /*******************************************************************************
  * MTK_platform handler called when an affinity instance is about to be turned
@@ -321,6 +401,7 @@ static int plat_affinst_on(unsigned long mpidr,
  * dealt with. So do not write & read global variables across calls. It will be
  * wise to do flush a write to the global to prevent unpredictable results.
  ******************************************************************************/
+#if ENABLE_PLAT_COMPAT
 static void plat_affinst_off(unsigned int afflvl, unsigned int state)
 {
 	unsigned long mpidr = read_mpidr_el1();
@@ -330,7 +411,7 @@ static void plat_affinst_off(unsigned int afflvl, unsigned int state)
 		return;
 
 	/* Prevent interrupts from spuriously waking up this cpu */
-	arm_gic_cpuif_deactivate();
+	gicv2_cpuif_disable();
 
 	spm_hotplug_off(mpidr);
 
@@ -343,6 +424,26 @@ static void plat_affinst_off(unsigned int afflvl, unsigned int state)
 		trace_power_flow(mpidr, CLUSTER_DOWN);
 	}
 }
+#else
+static void plat_power_domain_off(const psci_power_state_t *state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	/* Prevent interrupts from spuriously waking up this cpu */
+	gicv2_cpuif_disable();
+
+	spm_hotplug_off(mpidr);
+
+	trace_power_flow(mpidr, CPU_DOWN);
+
+	if (MTK_CLUSTER_PWR_STATE(state) == MTK_LOCAL_STATE_OFF) {
+		/* Disable coherency if this cluster is to be turned off */
+		plat_cci_disable();
+
+		trace_power_flow(mpidr, CLUSTER_DOWN);
+	}
+}
+#endif
 
 /*******************************************************************************
  * MTK_platform handler called when an affinity instance is about to be
@@ -356,6 +457,7 @@ static void plat_affinst_off(unsigned int afflvl, unsigned int state)
  * dealt with. So do not write & read global variables across calls. It will be
  * wise to do flush a write to the global to prevent unpredictable results.
  ******************************************************************************/
+#if ENABLE_PLAT_COMPAT
 static void plat_affinst_suspend(unsigned long sec_entrypoint,
 			  unsigned int afflvl,
 			  unsigned int state)
@@ -396,9 +498,50 @@ static void plat_affinst_suspend(unsigned long sec_entrypoint,
 		generic_timer_backup();
 		spm_system_suspend();
 		/* Prevent interrupts from spuriously waking up this cpu */
-		arm_gic_cpuif_deactivate();
+		gicv2_cpuif_disable();
+	}
+}
+#else
+static void plat_power_domain_suspend(const psci_power_state_t *state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+	unsigned long cluster_id;
+	unsigned long cpu_id;
+	uintptr_t rv;
+
+	cpu_id = mpidr & MPIDR_CPU_MASK;
+	cluster_id = mpidr & MPIDR_CLUSTER_MASK;
+
+	if (cluster_id)
+		rv = (uintptr_t)&mt8173_mcucfg->mp1_rv_addr[cpu_id].rv_addr_lw;
+	else
+		rv = (uintptr_t)&mt8173_mcucfg->mp0_rv_addr[cpu_id].rv_addr_lw;
+
+	mmio_write_32(rv, secure_entrypoint);
+
+	if (MTK_SYSTEM_PWR_STATE(state) != MTK_LOCAL_STATE_OFF) {
+		spm_mcdi_prepare_for_off_state(mpidr, MTK_PWR_LVL0);
+		if (MTK_CLUSTER_PWR_STATE(state) == MTK_LOCAL_STATE_OFF)
+			spm_mcdi_prepare_for_off_state(mpidr, MTK_PWR_LVL1);
+	}
+
+	mt_platform_save_context(mpidr);
+
+	/* Perform the common cluster specific operations */
+	if (MTK_CLUSTER_PWR_STATE(state) == MTK_LOCAL_STATE_OFF) {
+		/* Disable coherency if this cluster is to be turned off */
+		plat_cci_disable();
+	}
+
+	if (MTK_SYSTEM_PWR_STATE(state) == MTK_LOCAL_STATE_OFF) {
+		disable_scu(mpidr);
+		generic_timer_backup();
+		spm_system_suspend();
+		/* Prevent interrupts from spuriously waking up this cpu */
+		gicv2_cpuif_disable();
 	}
 }
+#endif
 
 /*******************************************************************************
  * MTK_platform handler called when an affinity instance has just been powered
@@ -407,6 +550,7 @@ static void plat_affinst_suspend(unsigned long sec_entrypoint,
  * was turned off prior to wakeup and do what's necessary to setup it up
  * correctly.
  ******************************************************************************/
+#if ENABLE_PLAT_COMPAT
 static void plat_affinst_on_finish(unsigned int afflvl, unsigned int state)
 {
 	unsigned long mpidr = read_mpidr_el1();
@@ -423,16 +567,45 @@ static void plat_affinst_on_finish(unsigned int afflvl, unsigned int state)
 	}
 
 	/* Enable the gic cpu interface */
-	arm_gic_cpuif_setup();
-	arm_gic_pcpu_distif_setup();
+	gicv2_cpuif_enable();
+	gicv2_pcpu_distif_init();
 	trace_power_flow(mpidr, CPU_UP);
 }
+#else
+void mtk_system_pwr_domain_resume(void);
+
+static void plat_power_domain_on_finish(const psci_power_state_t *state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	assert(state->pwr_domain_state[MPIDR_AFFLVL0] == MTK_LOCAL_STATE_OFF);
+
+	if ((PLAT_MAX_PWR_LVL > MTK_PWR_LVL1) &&
+		(state->pwr_domain_state[MTK_PWR_LVL2] == MTK_LOCAL_STATE_OFF))
+		mtk_system_pwr_domain_resume();
+
+	if (state->pwr_domain_state[MPIDR_AFFLVL1] == MTK_LOCAL_STATE_OFF) {
+		plat_cci_enable();
+		trace_power_flow(mpidr, CLUSTER_UP);
+	}
+
+	if ((PLAT_MAX_PWR_LVL > MTK_PWR_LVL1) &&
+		(state->pwr_domain_state[MTK_PWR_LVL2] == MTK_LOCAL_STATE_OFF))
+		return;
+
+	/* Enable the gic cpu interface */
+	gicv2_cpuif_enable();
+	gicv2_pcpu_distif_init();
+	trace_power_flow(mpidr, CPU_UP);
+}
+#endif
 
 /*******************************************************************************
  * MTK_platform handler called when an affinity instance has just been powered
  * on after having been suspended earlier. The level and mpidr determine the
  * affinity instance.
  ******************************************************************************/
+#if ENABLE_PLAT_COMPAT
 static void plat_affinst_suspend_finish(unsigned int afflvl, unsigned int state)
 {
 	unsigned long mpidr = read_mpidr_el1();
@@ -443,8 +616,7 @@ static void plat_affinst_suspend_finish(unsigned int afflvl, unsigned int state)
 
 	if (afflvl >= MPIDR_AFFLVL2) {
 		/* Enable the gic cpu interface */
-		arm_gic_setup();
-		arm_gic_cpuif_setup();
+		plat_arm_gic_init();
 		spm_system_suspend_finish();
 		enable_scu(mpidr);
 	}
@@ -461,14 +633,56 @@ static void plat_affinst_suspend_finish(unsigned int afflvl, unsigned int state)
 	if (afflvl < MPIDR_AFFLVL2)
 		spm_mcdi_finish_for_on_state(mpidr, afflvl);
 
-	arm_gic_pcpu_distif_setup();
+	gicv2_pcpu_distif_init();
+}
+#else
+static void plat_power_domain_suspend_finish(const psci_power_state_t *state)
+{
+	unsigned long mpidr = read_mpidr_el1();
+
+	if (state->pwr_domain_state[MTK_PWR_LVL0] == MTK_LOCAL_STATE_RET)
+		return;
+
+	if (MTK_SYSTEM_PWR_STATE(state) == MTK_LOCAL_STATE_OFF) {
+		/* Enable the gic cpu interface */
+		plat_arm_gic_init();
+		spm_system_suspend_finish();
+		enable_scu(mpidr);
+	}
+
+	/* Perform the common cluster specific operations */
+	if (MTK_CLUSTER_PWR_STATE(state) == MTK_LOCAL_STATE_OFF) {
+		/* Enable coherency if this cluster was off */
+		plat_cci_enable();
+	}
+
+	mt_platform_restore_context(mpidr);
+
+	if (MTK_SYSTEM_PWR_STATE(state) != MTK_LOCAL_STATE_OFF) {
+		spm_mcdi_finish_for_on_state(mpidr, MTK_PWR_LVL0);
+		if (MTK_CLUSTER_PWR_STATE(state) == MTK_LOCAL_STATE_OFF)
+			spm_mcdi_finish_for_on_state(mpidr, MTK_PWR_LVL1);
+	}
+
+	gicv2_pcpu_distif_init();
 }
+#endif
 
+#if ENABLE_PLAT_COMPAT
 static unsigned int plat_get_sys_suspend_power_state(void)
 {
 	/* StateID: 0, StateType: 1(power down), PowerLevel: 2(system) */
 	return psci_make_powerstate(0, 1, 2);
 }
+#else
+static void plat_get_sys_suspend_power_state(psci_power_state_t *req_state)
+{
+	assert(PLAT_MAX_PWR_LVL >= 2);
+
+	for (int i = MPIDR_AFFLVL0; i <= PLAT_MAX_PWR_LVL; i++)
+		req_state->pwr_domain_state[i] = MTK_LOCAL_STATE_OFF;
+}
+#endif
 
 /*******************************************************************************
  * MTK handlers to shutdown/reboot the system
@@ -500,6 +714,94 @@ static void __dead2 plat_system_reset(void)
 	panic();
 }
 
+#if !ENABLE_PLAT_COMPAT
+#if !PSCI_EXTENDED_STATE_ID
+static int plat_validate_power_state(unsigned int power_state,
+					psci_power_state_t *req_state)
+{
+	int pstate = psci_get_pstate_type(power_state);
+	int pwr_lvl = psci_get_pstate_pwrlvl(power_state);
+	int i;
+
+	assert(req_state);
+
+	if (pwr_lvl > PLAT_MAX_PWR_LVL)
+		return PSCI_E_INVALID_PARAMS;
+
+	/* Sanity check the requested state */
+	if (pstate == PSTATE_TYPE_STANDBY) {
+		/*
+		 * It's possible to enter standby only on power level 0
+		 * Ignore any other power level.
+		 */
+		if (pwr_lvl != 0)
+			return PSCI_E_INVALID_PARAMS;
+
+		req_state->pwr_domain_state[MTK_PWR_LVL0] =
+					MTK_LOCAL_STATE_RET;
+	} else {
+		for (i = 0; i <= pwr_lvl; i++)
+			req_state->pwr_domain_state[i] =
+					MTK_LOCAL_STATE_OFF;
+	}
+
+	/*
+	 * We expect the 'state id' to be zero.
+	 */
+	if (psci_get_pstate_id(power_state))
+		return PSCI_E_INVALID_PARAMS;
+
+	return PSCI_E_SUCCESS;
+}
+#else
+int plat_validate_power_state(unsigned int power_state,
+				psci_power_state_t *req_state)
+{
+	unsigned int state_id;
+	int i;
+
+	assert(req_state);
+
+	/*
+	 *  Currently we are using a linear search for finding the matching
+	 *  entry in the idle power state array. This can be made a binary
+	 *  search if the number of entries justify the additional complexity.
+	 */
+	for (i = 0; !!mtk_pm_idle_states[i]; i++) {
+		if (power_state == mtk_pm_idle_states[i])
+			break;
+	}
+
+	/* Return error if entry not found in the idle state array */
+	if (!mtk_pm_idle_states[i])
+		return PSCI_E_INVALID_PARAMS;
+
+	i = 0;
+	state_id = psci_get_pstate_id(power_state);
+
+	/* Parse the State ID and populate the state info parameter */
+	while (state_id) {
+		req_state->pwr_domain_state[i++] = state_id &
+						MTK_LOCAL_PSTATE_MASK;
+		state_id >>= MTK_LOCAL_PSTATE_WIDTH;
+	}
+
+	return PSCI_E_SUCCESS;
+}
+#endif
+
+void mtk_system_pwr_domain_resume(void)
+{
+	console_init(MT8173_UART0_BASE, MT8173_UART_CLOCK, MT8173_BAUDRATE);
+
+	/* Assert system power domain is available on the platform */
+	assert(PLAT_MAX_PWR_LVL >= MTK_PWR_LVL2);
+
+	plat_arm_gic_init();
+}
+#endif
+
+#if ENABLE_PLAT_COMPAT
 /*******************************************************************************
  * Export the platform handlers to enable psci to invoke them
  ******************************************************************************/
@@ -524,3 +826,54 @@ int platform_setup_pm(const plat_pm_ops_t **plat_ops)
 	*plat_ops = &plat_plat_pm_ops;
 	return 0;
 }
+#else
+static const plat_psci_ops_t plat_plat_pm_ops = {
+	.cpu_standby			= plat_cpu_standby,
+	.pwr_domain_on			= plat_power_domain_on,
+	.pwr_domain_on_finish		= plat_power_domain_on_finish,
+	.pwr_domain_off			= plat_power_domain_off,
+	.pwr_domain_suspend		= plat_power_domain_suspend,
+	.pwr_domain_suspend_finish	= plat_power_domain_suspend_finish,
+	.system_off			= plat_system_off,
+	.system_reset			= plat_system_reset,
+	.validate_power_state		= plat_validate_power_state,
+	.get_sys_suspend_power_state	= plat_get_sys_suspend_power_state,
+};
+
+int plat_setup_psci_ops(uintptr_t sec_entrypoint,
+			const plat_psci_ops_t **psci_ops)
+{
+	*psci_ops = &plat_plat_pm_ops;
+	secure_entrypoint = sec_entrypoint;
+	return 0;
+}
+
+/*
+ * The PSCI generic code uses this API to let the platform participate in state
+ * coordination during a power management operation. It compares the platform
+ * specific local power states requested by each cpu for a given power domain
+ * and returns the coordinated target power state that the domain should
+ * enter. A platform assigns a number to a local power state. This default
+ * implementation assumes that the platform assigns these numbers in order of
+ * increasing depth of the power state i.e. for two power states X & Y, if X < Y
+ * then X represents a shallower power state than Y. As a result, the
+ * coordinated target local power state for a power domain will be the minimum
+ * of the requested local power states.
+ */
+plat_local_state_t plat_get_target_pwr_state(unsigned int lvl,
+					     const plat_local_state_t *states,
+					     unsigned int ncpu)
+{
+	plat_local_state_t target = PLAT_MAX_OFF_STATE, temp;
+
+	assert(ncpu);
+
+	do {
+		temp = *states++;
+		if (temp < target)
+			target = temp;
+	} while (--ncpu);
+
+	return target;
+}
+#endif
diff --git a/plat/mediatek/mt8173/plat_topology.c b/plat/mediatek/mt8173/plat_topology.c
index 96598b656cc3252c7c93ebbd304fe003800b559a..caab8e468516c951cf356e297e7981a6864fe7fe 100644
--- a/plat/mediatek/mt8173/plat_topology.c
+++ b/plat/mediatek/mt8173/plat_topology.c
@@ -31,6 +31,7 @@
 #include <platform_def.h>
 #include <psci.h>
 
+#if ENABLE_PLAT_COMPAT
 unsigned int plat_get_aff_count(unsigned int aff_lvl, unsigned long mpidr)
 {
 	/* Report 1 (absent) instance at levels higher that the cluster level */
@@ -54,3 +55,55 @@ int mt_setup_topology(void)
 	/* [TODO] Make topology configurable via SCC */
 	return 0;
 }
+#else
+
+const unsigned char mtk_power_domain_tree_desc[] = {
+	/* No of root nodes */
+	PLATFORM_SYSTEM_COUNT,
+	/* No of children for the root node */
+	PLATFORM_CLUSTER_COUNT,
+	/* No of children for the first cluster node */
+	PLATFORM_CLUSTER0_CORE_COUNT,
+	/* No of children for the second cluster node */
+	PLATFORM_CLUSTER1_CORE_COUNT
+};
+
+/*******************************************************************************
+ * This function returns the MT8173 default topology tree information.
+ ******************************************************************************/
+const unsigned char *plat_get_power_domain_tree_desc(void)
+{
+	return mtk_power_domain_tree_desc;
+}
+
+/*******************************************************************************
+ * This function implements a part of the critical interface between the psci
+ * generic layer and the platform that allows the former to query the platform
+ * to convert an MPIDR to a unique linear index. An error code (-1) is returned
+ * in case the MPIDR is invalid.
+ ******************************************************************************/
+int plat_core_pos_by_mpidr(u_register_t mpidr)
+{
+	unsigned int cluster_id, cpu_id;
+
+	mpidr &= MPIDR_AFFINITY_MASK;
+
+	if (mpidr & ~(MPIDR_CLUSTER_MASK | MPIDR_CPU_MASK))
+		return -1;
+
+	cluster_id = (mpidr >> MPIDR_AFF1_SHIFT) & MPIDR_AFFLVL_MASK;
+	cpu_id = (mpidr >> MPIDR_AFF0_SHIFT) & MPIDR_AFFLVL_MASK;
+
+	if (cluster_id >= PLATFORM_CLUSTER_COUNT)
+		return -1;
+
+	/*
+	 * Validate cpu_id by checking whether it represents a CPU in
+	 * one of the two clusters present on the platform.
+	 */
+	if (cpu_id >= PLATFORM_MAX_CPUS_PER_CLUSTER)
+		return -1;
+
+	return (cpu_id + (cluster_id * 4));
+}
+#endif
diff --git a/plat/mediatek/mt8173/platform.mk b/plat/mediatek/mt8173/platform.mk
index 54ca47590a5021df1689669e592942a86794fdea..e59125a53244998230716d379fa9911b4016301d 100644
--- a/plat/mediatek/mt8173/platform.mk
+++ b/plat/mediatek/mt8173/platform.mk
@@ -33,6 +33,8 @@ MTK_PLAT_SOC		:=	${MTK_PLAT}/${PLAT}
 
 PLAT_INCLUDES		:=	-I${MTK_PLAT}/common/				\
 				-I${MTK_PLAT}/common/drivers/uart/		\
+				-Iinclude/plat/arm/common			\
+				-Iinclude/plat/arm/common/aarch64		\
 				-I${MTK_PLAT_SOC}/drivers/crypt/		\
 				-I${MTK_PLAT_SOC}/drivers/mtcmos/		\
 				-I${MTK_PLAT_SOC}/drivers/pmic/			\
@@ -44,12 +46,13 @@ PLAT_INCLUDES		:=	-I${MTK_PLAT}/common/				\
 PLAT_BL_COMMON_SOURCES	:=	lib/xlat_tables/xlat_tables_common.c		\
 				lib/xlat_tables/aarch64/xlat_tables.c		\
 				plat/common/aarch64/plat_common.c		\
-				plat/common/plat_gic.c
+				plat/arm/common/arm_gicv2.c			\
+				plat/common/plat_gicv2.c
 
 BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
-				drivers/arm/gic/arm_gic.c			\
-				drivers/arm/gic/gic_v2.c			\
-				drivers/arm/gic/gic_v3.c			\
+				drivers/arm/gic/common/gic_common.c		\
+				drivers/arm/gic/v2/gicv2_main.c			\
+				drivers/arm/gic/v2/gicv2_helpers.c		\
 				drivers/console/aarch64/console.S		\
 				drivers/delay_timer/delay_timer.c		\
 				drivers/delay_timer/generic_delay_timer.c	\
@@ -73,7 +76,6 @@ BL31_SOURCES		+=	drivers/arm/cci/cci.c				\
 				${MTK_PLAT_SOC}/drivers/spm/spm_mcdi.c		\
 				${MTK_PLAT_SOC}/drivers/spm/spm_suspend.c	\
 				${MTK_PLAT_SOC}/drivers/timer/mt_cpuxgpt.c	\
-				${MTK_PLAT_SOC}/plat_mt_gic.c			\
 				${MTK_PLAT_SOC}/plat_pm.c			\
 				${MTK_PLAT_SOC}/plat_sip_calls.c		\
 				${MTK_PLAT_SOC}/plat_topology.c			\