diff --git a/drivers/mfd/mt6397-core.c b/drivers/mfd/mt6397-core.c
index 7c81a20865f0..310dae26ddff 100644
--- a/drivers/mfd/mt6397-core.c
+++ b/drivers/mfd/mt6397-core.c
@@ -16,9 +16,20 @@
 #include <linux/mfd/mt6323/registers.h>
 #include <linux/mfd/mt6397/registers.h>
 
+#define MT6323_RTC_BASE		0x8000
+#define MT6323_RTC_SIZE		0x40
+
 #define MT6397_RTC_BASE		0xe000
 #define MT6397_RTC_SIZE		0x3e
 
+#define MT6323_PWRC_BASE	0x8000
+#define MT6323_PWRC_SIZE	0x40
+
+static const struct resource mt6323_rtc_resources[] = {
+	DEFINE_RES_MEM(MT6323_RTC_BASE, MT6323_RTC_SIZE),
+	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_RTC),
+};
+
 static const struct resource mt6397_rtc_resources[] = {
 	DEFINE_RES_MEM(MT6397_RTC_BASE, MT6397_RTC_SIZE),
 	DEFINE_RES_IRQ(MT6397_IRQ_RTC),
@@ -34,8 +45,17 @@ static const struct resource mt6397_keys_resources[] = {
 	DEFINE_RES_IRQ(MT6397_IRQ_HOMEKEY),
 };
 
+static const struct resource mt6323_pwrc_resources[] = {
+	DEFINE_RES_MEM(MT6323_PWRC_BASE, MT6323_PWRC_SIZE),
+};
+
 static const struct mfd_cell mt6323_devs[] = {
 	{
+		.name = "mt6323-rtc",
+		.num_resources = ARRAY_SIZE(mt6323_rtc_resources),
+		.resources = mt6323_rtc_resources,
+		.of_compatible = "mediatek,mt6323-rtc",
+	}, {
 		.name = "mt6323-regulator",
 		.of_compatible = "mediatek,mt6323-regulator"
 	}, {
@@ -46,6 +66,11 @@ static const struct mfd_cell mt6323_devs[] = {
 		.num_resources = ARRAY_SIZE(mt6323_keys_resources),
 		.resources = mt6323_keys_resources,
 		.of_compatible = "mediatek,mt6323-keys"
+	}, {
+		.name = "mt6323-pwrc",
+		.num_resources = ARRAY_SIZE(mt6323_pwrc_resources),
+		.resources = mt6323_pwrc_resources,
+		.of_compatible = "mediatek,mt6323-pwrc"
 	},
 };