diff --git a/os/arch/arm/src/amebasmart/amebasmart_serial.c b/os/arch/arm/src/amebasmart/amebasmart_serial.c
index 0deec2bbf1..c9d28232ff 100644
--- a/os/arch/arm/src/amebasmart/amebasmart_serial.c
+++ b/os/arch/arm/src/amebasmart/amebasmart_serial.c
@@ -1258,15 +1258,9 @@ static void amebasmart_serial_pmnotify(FAR struct pm_callback_s *cb, int domain,
 	switch (pmstate)
 	{
 		case PM_NORMAL:
-			pmu_unregister_sleep_callback(PMU_LOGUART_DEVICE);
-			pmu_unregister_sleep_callback(PMU_UART1_DEVICE);
-			break;
 		case PM_IDLE:
 		case PM_STANDBY:
-			break;
 		case PM_SLEEP:
-			pmu_register_sleep_callback(PMU_LOGUART_DEVICE, (PSM_HOOK_FUN)rtk_loguart_suspend, NULL, (PSM_HOOK_FUN)rtk_loguart_resume, NULL);
-			pmu_register_sleep_callback(PMU_UART1_DEVICE, (PSM_HOOK_FUN)rtk_uart_suspend, NULL, (PSM_HOOK_FUN)rtk_uart_resume, NULL);
 			break;
 		default:
 			break;
@@ -1399,6 +1393,8 @@ void up_serialinit(void)
 #ifdef CONFIG_PM
 	/* Register to receive power management callbacks */
 	ret = pm_register(&g_serialpm.pm_cb);
+	pmu_register_sleep_callback(PMU_LOGUART_DEVICE, (PSM_HOOK_FUN)rtk_loguart_suspend, NULL, (PSM_HOOK_FUN)rtk_loguart_resume, NULL);
+	pmu_register_sleep_callback(PMU_UART1_DEVICE, (PSM_HOOK_FUN)rtk_uart_suspend, NULL, (PSM_HOOK_FUN)rtk_uart_resume, NULL);
 	DEBUGASSERT(ret == OK);
 	UNUSED(ret);
 #endif
diff --git a/os/arch/arm/src/amebasmart/amebasmart_spi.c b/os/arch/arm/src/amebasmart/amebasmart_spi.c
index f58bf2739c..0a66ce5add 100644
--- a/os/arch/arm/src/amebasmart/amebasmart_spi.c
+++ b/os/arch/arm/src/amebasmart/amebasmart_spi.c
@@ -1506,13 +1506,9 @@ static void amebasmart_spi_pmnotify(FAR struct pm_callback_s *cb, int domain,
 		   If using SPI as wakeup interrupt, NP core can only go for CG sleep
 		*/
 		case PM_NORMAL:
-			pmu_unregister_sleep_callback(PMU_SPI_DEVICE);
-			break;
 		case PM_IDLE:
 		case PM_STANDBY:
-			break;
 		case PM_SLEEP:
-			pmu_register_sleep_callback(PMU_SPI_DEVICE, (PSM_HOOK_FUN)rtk_spi_suspend, NULL, (PSM_HOOK_FUN)rtk_spi_resume, NULL);
 			break;
 		default:
 			break;
@@ -1649,6 +1645,7 @@ void spi_pminitialize(void)
 	int ret;
 	/* Register to receive power management callbacks */
 	ret = pm_register(&g_spipm.pm_cb);
+	pmu_register_sleep_callback(PMU_SPI_DEVICE, (PSM_HOOK_FUN)rtk_spi_suspend, NULL, (PSM_HOOK_FUN)rtk_spi_resume, NULL);
 	DEBUGASSERT(ret == OK);
 	UNUSED(ret);
 }
diff --git a/os/board/rtl8730e/src/component/soc/amebad2/misc/ameba_tizenrt_pmu.h b/os/board/rtl8730e/src/component/soc/amebad2/misc/ameba_tizenrt_pmu.h
index 01ec16cff2..f6e7fd00db 100644
--- a/os/board/rtl8730e/src/component/soc/amebad2/misc/ameba_tizenrt_pmu.h
+++ b/os/board/rtl8730e/src/component/soc/amebad2/misc/ameba_tizenrt_pmu.h
@@ -3,28 +3,14 @@
 
 typedef enum {
 	PMU_OS					= 0,
-	PMU_WLAN_DEVICE		= 1,
-	PMU_LOGUART_DEVICE	= 2,
-	PMU_KM4_RUN			= 3,
-
-	PMU_UART0_DEVICE		= 4,
-	PMU_UART1_DEVICE		= 5,
-	PMU_I2C0_DEVICE		= 6,
-	PMU_TOUCH_DEVICE		= 7,
-	PMU_USOC_DEVICE		= 8,
-	PMU_DONGLE_DEVICE	= 9,
-	PMU_RTC_DEVICE		= 10,
-	PMU_CONSOL_DEVICE	= 11,
-	PMU_ADC_DEVICE	= 12,
-	PMU_WAKWLOCK_TIMEOUT = 13,
-	PMU_AP_RUN	= 14,
-	PMU_PSRAM_DEVICE	= 15,
-	PMU_DEV_USER_BASE	= 16, /*number 16 ~ 31 is reserved for customer use*/
-	PMU_BT_DEVICE	= 17,
-	PMU_VAD_DEVICE	= 18,
-	PMU_SPI_DEVICE   = 19,
-
-	PMU_MAX				= 31
+	PMU_WLAN_DEVICE			= 1,
+	PMU_LOGUART_DEVICE		= 2,
+	PMU_UART1_DEVICE		= 3,
+	PMU_BT_DEVICE			= 4,
+	PMU_SPI_DEVICE   		= 5,
+	PMU_I2C_DEVICE  		= 6,
+	PMU_I2S_DEVICE  		= 7,
+	PMU_MAX,
 } PMU_DEVICE;
 
 enum CPU1_STATE {
diff --git a/os/board/rtl8730e/src/rtl8730e_alc1019.c b/os/board/rtl8730e/src/rtl8730e_alc1019.c
index f2fca38360..846465edf8 100644
--- a/os/board/rtl8730e/src/rtl8730e_alc1019.c
+++ b/os/board/rtl8730e/src/rtl8730e_alc1019.c
@@ -67,8 +67,6 @@ extern FAR struct i2s_dev_s *amebasmart_i2s_initialize(uint16_t port);
 
 #ifdef CONFIG_AUDIO_ALC1019
 
-extern struct i2s_dev_s *amebad_i2s_initialize(uint16_t port);
-
 /****************************************************************************
  * Private Types
  ****************************************************************************/
diff --git a/os/board/rtl8730e/src/rtl8730e_boot.c b/os/board/rtl8730e/src/rtl8730e_boot.c
index 10f112072a..b9be2c2252 100644
--- a/os/board/rtl8730e/src/rtl8730e_boot.c
+++ b/os/board/rtl8730e/src/rtl8730e_boot.c
@@ -126,7 +126,11 @@ void board_i2s_initialize(void)
 {
 #if defined(CONFIG_AUDIO_I2SCHAR) && defined(CONFIG_AMEBASMART_I2S)
 	i2schar_devinit();
+#ifdef CONFIG_PM
+	i2s_pminitialize();
+#endif
 #endif
+
 }
 
 void board_spi_initialize(void)
@@ -211,6 +215,9 @@ void board_i2c_initialize(void)
 	}
 #endif
 #endif
+#ifdef CONFIG_PM
+	i2c_pminitialize();
+#endif
 #endif
 }
 
diff --git a/os/board/rtl8730e/src/rtl8730e_i2schar.c b/os/board/rtl8730e/src/rtl8730e_i2schar.c
index 5a7039476e..d348bd7352 100644
--- a/os/board/rtl8730e/src/rtl8730e_i2schar.c
+++ b/os/board/rtl8730e/src/rtl8730e_i2schar.c
@@ -35,8 +35,12 @@
  * Pre-processor Definitions
  ****************************************************************************/
 
-#ifndef CONFIG_AMEBASMART_I2SCHAR_MINOR
-#define CONFIG_AMEBASMART_I2SCHAR_MINOR 0
+#ifndef CONFIG_AMEBASMART_I2SCHAR_MINOR_2
+#define CONFIG_AMEBASMART_I2SCHAR_MINOR_2 2
+#endif
+
+#ifndef CONFIG_AMEBASMART_I2SCHAR_MINOR_3
+#define CONFIG_AMEBASMART_I2SCHAR_MINOR_3 3
 #endif
 /*****************************************************************************
  * Private Functions
@@ -66,7 +70,8 @@ int i2schar_devinit(void)
 	int ret;
 
 	if (!initialized) {
-#ifdef CONFIG_AMEBASMART_I2S2
+		/* If ALC1019 is enabled, we should reserve I2S 2 for it */
+#if defined(CONFIG_AMEBASMART_I2S2) && !defined(CONFIG_AUDIO_ALC1019)
 		/* Call amebasmart_i2s_initialize() to get an instance of the I2S interface */
 		/* Initialise I2S2 */
 		i2s = amebasmart_i2s_initialize(I2S_NUM_2);
@@ -76,8 +81,8 @@ int i2schar_devinit(void)
 			return -ENODEV;
 		}
 
-		/* Register the I2S character driver at "/dev/i2schar0" */
-		ret = i2schar_register(i2s, CONFIG_AMEBASMART_I2SCHAR_MINOR);
+		/* Register the I2S character driver at "/dev/i2schar2" */
+		ret = i2schar_register(i2s, CONFIG_AMEBASMART_I2SCHAR_MINOR_2);
 		if (ret < 0) {
 			lldbg("ERROR: i2schar_register failed: %d\n", ret);
 			return ret;
@@ -93,8 +98,8 @@ int i2schar_devinit(void)
 			return -ENODEV;
 		}
 
-		/* Register the I2S character driver at "/dev/i2schar0" */
-		ret = i2schar_register(i2s, CONFIG_AMEBASMART_I2SCHAR_MINOR);
+		/* Register the I2S character driver at "/dev/i2schar3" */
+		ret = i2schar_register(i2s, CONFIG_AMEBASMART_I2SCHAR_MINOR_3);
 		if (ret < 0) {
 			lldbg("ERROR: i2schar_register failed: %d\n", ret);
 			return ret;
diff --git a/os/drivers/audio/alc1019.c b/os/drivers/audio/alc1019.c
index bdc2ca3613..dc1d2b0a0a 100644
--- a/os/drivers/audio/alc1019.c
+++ b/os/drivers/audio/alc1019.c
@@ -1045,7 +1045,7 @@ FAR struct audio_lowerhalf_s *alc1019_initialize(FAR struct i2c_dev_s *i2c, FAR
 	 * default state.
 	 */
 
-	/*reconfigure the ALC1019 hardwaqre */
+	/*reconfigure the ALC1019 hardware */
 	alc1019_reset_config(priv);
 	alc1019_exec_i2c_script(priv, codec_init_mute_on_script, sizeof(codec_init_mute_on_script) / sizeof(t_codec_init_script_entry));