diff --git a/board/reef/board.c b/board/reef/board.c
index bbc442944a..6832b5abab 100644
--- a/board/reef/board.c
+++ b/board/reef/board.c
@@ -81,9 +81,18 @@ static void tcpc_alert_event(enum gpio_signal signal)
 #ifdef CONFIG_USB_PD_TCPC_LOW_POWER
 static void anx74xx_cable_det_handler(void)
 {
+	int level = gpio_get_level(GPIO_USB_C0_CABLE_DET);
+
+	/*
+	 * Setting the low power is handled by DRP status hence
+	 * handle only the attach event.
+	 */
+	if (level)
+		anx74xx_handle_power_mode(NPCX_I2C_PORT0_0,
+					ANX74XX_NORMAL_MODE);
+
 	/* confirm if cable_det is asserted */
-	if (!gpio_get_level(GPIO_USB_C0_CABLE_DET) ||
-		gpio_get_level(GPIO_USB_C0_PD_RST_L))
+	if (!level || gpio_get_level(GPIO_USB_C0_PD_RST_L))
 		return;
 
 	task_set_event(TASK_ID_PD_C0, PD_EVENT_TCPC_RESET, 0);
diff --git a/driver/tcpm/anx74xx.c b/driver/tcpm/anx74xx.c
index 5854c62c8f..6311a53446 100644
--- a/driver/tcpm/anx74xx.c
+++ b/driver/tcpm/anx74xx.c
@@ -27,6 +27,9 @@ struct anx_state {
 	int	polarity;
 	int	vconn_en;
 	int	mux_state;
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+	int	prev_mode;
+#endif
 };
 #define clear_recvd_msg_int(port) do {\
 		int reg, rv; \
@@ -43,6 +46,8 @@ static int anx74xx_set_mux(int port, int polarity);
 /* Save the selected rp value */
 static int selected_rp[CONFIG_USB_PD_PORT_COUNT];
 
+static int anx74xx_tcpm_init(int port);
+
 static void anx74xx_tcpm_set_auto_good_crc(int port, int enable)
 {
 	int reg;
@@ -70,20 +75,30 @@ static void anx74xx_tcpm_set_auto_good_crc(int port, int enable)
 
 static void anx74xx_set_power_mode(int port, int mode)
 {
-	switch (mode) {
-	case ANX74XX_NORMAL_MODE:
-	/* Set PWR_EN and RST_N GPIO pins high */
-		board_set_tcpc_power_mode(port, 1);
-		break;
-	case ANX74XX_STANDBY_MODE:
-	/* Disable PWR_EN, keep Digital and analog block
-	 *  ON for cable detection
+	int reg;
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+	anx[port].prev_mode = mode;
+#endif
+
+	tcpc_read(port, ANX74XX_REG_ANALOG_CTRL_0, &reg);
+
+	/*
+	 * When ANX3429 needs to enter ANX74XX_STANDBY_MODE, Cable det pin
+	 * shall be pulled low first by ANX3429`s register, in this way,
+	 * for use case of E-mark cable only, EC can find cable det pin is
+	 * pulled high again.
 	 */
-		board_set_tcpc_power_mode(port, 0);
-		break;
-	default:
-		break;
-	}
+	if (mode == ANX74XX_STANDBY_MODE)
+		reg &= ~ANX74XX_REG_R_PIN_CABLE_DET;
+	else
+		reg |= ANX74XX_REG_R_PIN_CABLE_DET;
+
+	tcpc_write(port, ANX74XX_REG_ANALOG_CTRL_0, reg);
+
+	/* Delay recommended by Analogix for CABLE_DET setup time */
+	msleep(2);
+
+	board_set_tcpc_power_mode(port, mode);
 }
 
 void anx74xx_tcpc_set_vbus(int port, int enable)
@@ -554,6 +569,31 @@ static int anx74xx_tcpm_set_cc(int port, int pull)
 	return rv;
 }
 
+#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+void anx74xx_handle_power_mode(int port, int mode)
+{
+	if (mode == ANX74XX_STANDBY_MODE) {
+		anx74xx_set_power_mode(port, mode);
+	} else if (anx[port].prev_mode != ANX74XX_NORMAL_MODE) {
+		/*
+		 * TODO: Interrupt high follows CC line hence ignore multiple
+		 * interrupts.
+		 */
+		anx74xx_tcpm_init(port);
+	}
+}
+#endif /* CONFIG_USB_PD_TCPC_LOW_POWER */
+
+static int anx74xx_tcpc_drp_toggle(int port)
+{
+#ifdef CONFIG_USB_PD_TCPC_LOW_POWER
+	anx74xx_handle_power_mode(port, ANX74XX_STANDBY_MODE);
+#endif
+	return EC_SUCCESS;
+}
+#endif /* CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE */
+
 static int anx74xx_tcpm_set_polarity(int port, int polarity)
 {
 	int reg, mux_state, rv = EC_SUCCESS;
@@ -829,11 +869,11 @@ void anx74xx_tcpc_alert(int port)
 	}
 }
 
-int anx74xx_tcpm_init(int port)
+static int anx74xx_tcpm_init(int port)
 {
 	int rv = 0, reg;
 
-	memset(anx, 0, CONFIG_USB_PD_PORT_COUNT*sizeof(struct anx_state));
+	memset(&anx[port], 0, sizeof(struct anx_state));
 	/* Bring chip in normal mode to work */
 	anx74xx_set_power_mode(port, ANX74XX_NORMAL_MODE);
 
@@ -912,6 +952,9 @@ const struct tcpm_drv anx74xx_tcpm_drv = {
 	.tcpc_discharge_vbus	= &anx74xx_tcpc_discharge_vbus,
 #endif
 	.get_chip_info		= &tcpci_get_chip_info,
+#ifdef CONFIG_USB_PD_DUAL_ROLE_AUTO_TOGGLE
+	.drp_toggle		= &anx74xx_tcpc_drp_toggle,
+#endif
 };
 
 #ifdef CONFIG_CMD_I2C_STRESS_TEST_TCPC
diff --git a/driver/tcpm/anx74xx.h b/driver/tcpm/anx74xx.h
index 5f0995725d..fcbd38fe41 100644
--- a/driver/tcpm/anx74xx.h
+++ b/driver/tcpm/anx74xx.h
@@ -68,6 +68,9 @@
 #define ANX74XX_REG_AUTO_GOODCRC_EN	0x01
 #define ANX74XX_REG_ENABLE_GOODCRC		0x38
 
+#define ANX74XX_REG_ANALOG_CTRL_0		0x41
+#define ANX74XX_REG_R_PIN_CABLE_DET		(1 << 7)
+
 #define ANX74XX_REG_ANALOG_CTRL_1		0x42
 #define ANX74XX_REG_ANALOG_CTRL_5		0x46
 #define ANX74XX_REG_ANALOG_CTRL_6		0x47
@@ -178,6 +181,7 @@ void anx74xx_tcpc_set_vbus(int port, int enable);
 void anx74xx_tcpc_update_hpd_status(int port, int hpd_lvl, int hpd_irq);
 void anx74xx_tcpc_clear_hpd_status(int port);
 int anx74xx_tcpc_get_fw_version(int port, int *version);
+void anx74xx_handle_power_mode(int port, int mode);
 
 #ifdef CONFIG_CMD_I2C_STRESS_TEST_TCPC
 extern struct i2c_stress_test_dev anx74xx_i2c_stress_test_dev;