diff --git a/components/ieee802154/driver/esp_ieee802154_dev.c b/components/ieee802154/driver/esp_ieee802154_dev.c
index c5866fe2d1..7760c049ff 100644
--- a/components/ieee802154/driver/esp_ieee802154_dev.c
+++ b/components/ieee802154/driver/esp_ieee802154_dev.c
@@ -30,12 +30,12 @@
 #include "esp_pm.h"
 #include "esp_private/esp_clk.h"
 #include "esp_private/sleep_retention.h"
-static bool g_sleep_rf = false;
-// #if SOC_PM_RETENTION_HAS_CLOCK_BUG
-// #define BTBB_LINK_OWNER  ENTRY(3)
-// #else
+static bool s_rf_closed = false;
+#if SOC_PM_RETENTION_HAS_CLOCK_BUG
+#define IEEE802154_LINK_OWNER  ENTRY(3)
+#else
 #define IEEE802154_LINK_OWNER  ENTRY(0) | ENTRY(2)
-// #endif // SOC_PM_RETENTION_HAS_CLOCK_BUG
+#endif // SOC_PM_RETENTION_HAS_CLOCK_BUG
 #endif
 
 #define CCA_DETECTION_TIME 8
@@ -52,6 +52,7 @@ static uint8_t s_recent_rx_frame_info_index;
 static portMUX_TYPE s_ieee802154_spinlock = portMUX_INITIALIZER_UNLOCKED;
 
 static esp_err_t ieee802154_sleep_init(void);
+static void ieee802154_rf_enable(void);
 
 static IRAM_ATTR void event_end_process(void)
 {
@@ -679,8 +680,7 @@ IEEE802154_STATIC void tx_init(const uint8_t *frame)
 
 esp_err_t ieee802154_transmit(const uint8_t *frame, bool cca)
 {
-    ieee802154_wakeup();
-
+    ieee802154_rf_enable();
     ieee802154_enter_critical();
     tx_init(frame);
 
@@ -708,9 +708,7 @@ esp_err_t ieee802154_transmit_at(const uint8_t *frame, bool cca, uint32_t time)
 {
     uint32_t tx_target_time;
     uint32_t current_time;
-
-    ieee802154_wakeup();
-
+    ieee802154_rf_enable();
     tx_init(frame);
     IEEE802154_SET_TXRX_PTI(IEEE802154_SCENE_TX_AT);
     if (cca) {
@@ -752,7 +750,7 @@ esp_err_t ieee802154_receive(void)
         // already in rx state, don't abort current rx operation
         return ESP_OK;
     }
-    ieee802154_wakeup();
+    ieee802154_rf_enable();
 
     ieee802154_enter_critical();
     rx_init();
@@ -765,7 +763,7 @@ esp_err_t ieee802154_receive_at(uint32_t time)
 {
     uint32_t rx_target_time = time - IEEE802154_RX_RAMPUP_TIME_US;
     uint32_t current_time;
-    ieee802154_wakeup();
+    ieee802154_rf_enable();
     rx_init();
     IEEE802154_SET_TXRX_PTI(IEEE802154_SCENE_RX_AT);
     set_next_rx_buffer();
@@ -794,22 +792,22 @@ static esp_err_t ieee802154_sleep_init(void)
     return err;
 }
 
-IRAM_ATTR void ieee802154_enter_sleep(void)
+IRAM_ATTR static void ieee802154_rf_disable(void)
 {
 #if CONFIG_FREERTOS_USE_TICKLESS_IDLE
-    if (g_sleep_rf == false) {
+    if (s_rf_closed == false) {
         esp_phy_disable();
-        g_sleep_rf = true;
+        s_rf_closed = true;
     }
 #endif // CONFIG_FREERTOS_USE_TICKLESS_IDLE
 }
 
-IRAM_ATTR void ieee802154_wakeup(void)
+IRAM_ATTR static void ieee802154_rf_enable(void)
 {
 #if CONFIG_FREERTOS_USE_TICKLESS_IDLE
-    if (g_sleep_rf) {
+    if (s_rf_closed) {
         esp_phy_enable();
-        g_sleep_rf = false;
+        s_rf_closed = false;
     }
 #endif //CONFIG_FREERTOS_USE_TICKLESS_IDLE
 }
@@ -820,18 +818,15 @@ esp_err_t ieee802154_sleep(void)
         ieee802154_enter_critical();
         stop_current_operation();
         ieee802154_set_state(IEEE802154_STATE_SLEEP);
-
         ieee802154_exit_critical();
-
-        ieee802154_enter_sleep(); // colse rf
+        ieee802154_rf_disable(); // colse rf
     }
     return ESP_OK;
 }
 
 esp_err_t ieee802154_energy_detect(uint32_t duration)
 {
-    ieee802154_wakeup();
-
+    ieee802154_rf_enable();
     ieee802154_enter_critical();
 
     stop_current_operation();
@@ -847,8 +842,7 @@ esp_err_t ieee802154_energy_detect(uint32_t duration)
 
 esp_err_t ieee802154_cca(void)
 {
-    ieee802154_wakeup();
-
+    ieee802154_rf_enable();
     ieee802154_enter_critical();
 
     stop_current_operation();
diff --git a/components/ieee802154/private_include/esp_ieee802154_dev.h b/components/ieee802154/private_include/esp_ieee802154_dev.h
index bf80282369..7fc5756134 100644
--- a/components/ieee802154/private_include/esp_ieee802154_dev.h
+++ b/components/ieee802154/private_include/esp_ieee802154_dev.h
@@ -178,18 +178,6 @@ uint8_t ieee802154_get_recent_lqi(void);
  */
 ieee802154_state_t ieee802154_get_state(void);
 
-/**
- * @brief  The IEEE 802.15.4 enter sleep.
- *
- */
-void ieee802154_enter_sleep(void);
-
-/**
- * @brief  The IEEE 802.15.4 wakeup.
- *
- */
-void ieee802154_wakeup(void);
-
 /** The following three functions are only used for internal test. **/
 /**
  * @brief  The clear channel assessment done.
diff --git a/examples/openthread/.build-test-rules.yml b/examples/openthread/.build-test-rules.yml
index abb3a51091..49f5744824 100644
--- a/examples/openthread/.build-test-rules.yml
+++ b/examples/openthread/.build-test-rules.yml
@@ -45,7 +45,8 @@ examples/openthread/ot_rcp:
       reason: only test on esp32c6
   <<: *openthread_dependencies
 
+# To add support for the ESP32-C6 in TZ-302
 examples/openthread/ot_sleepy_device:
   enable:
-    - if: IDF_TARGET in ["esp32h2", "esp32c6"]
+    - if: IDF_TARGET in ["esp32h2"]
   <<: [*openthread_dependencies, *openthread_sleep_dependencies]
diff --git a/examples/openthread/ot_sleepy_device/README.md b/examples/openthread/ot_sleepy_device/README.md
index a41def3d99..5c832db28d 100644
--- a/examples/openthread/ot_sleepy_device/README.md
+++ b/examples/openthread/ot_sleepy_device/README.md
@@ -1,5 +1,5 @@
-| Supported Targets | ESP32-C6 | ESP32-H2 |
-| ----------------- | -------- | -------- |
+| Supported Targets | ESP32-H2 |
+| ----------------- | -------- |
 
 # OpenThread Sleepy Device Example
 
diff --git a/examples/openthread/ot_sleepy_device/main/esp_ot_sleepy_device_config.h b/examples/openthread/ot_sleepy_device/main/esp_ot_sleepy_device_config.h
index cd4453383a..73bd029b27 100644
--- a/examples/openthread/ot_sleepy_device/main/esp_ot_sleepy_device_config.h
+++ b/examples/openthread/ot_sleepy_device/main/esp_ot_sleepy_device_config.h
@@ -25,7 +25,7 @@
     }
 #endif
 
-// When JIRA PM-3 fix, uart clock can autoswitch.
+// When JIRA PM-3 is fixed, the UART clock will automatically switch.
 #define ESP_OPENTHREAD_DEFAULT_HOST_CONFIG()                    \
     {                                                           \
         .host_connection_mode = HOST_CONNECTION_MODE_CLI_UART,  \
diff --git a/examples/openthread/pytest_otbr.py b/examples/openthread/pytest_otbr.py
index 2ae516518b..eabb1cc24b 100644
--- a/examples/openthread/pytest_otbr.py
+++ b/examples/openthread/pytest_otbr.py
@@ -548,10 +548,6 @@ def test_TCP_NAT64(Init_interface:bool, dut: Tuple[IdfDut, IdfDut, IdfDut]) -> N
 @pytest.mark.openthread_sleep
 @pytest.mark.parametrize(
     'config, count, app_path, target', [
-        ('cli_h2|sleepy_c6', 2,
-         f'{os.path.join(os.path.dirname(__file__), "ot_cli")}'
-         f'|{os.path.join(os.path.dirname(__file__), "ot_sleepy_device")}',
-         'esp32h2|esp32c6'),
         ('cli_c6|sleepy_h2', 2,
          f'{os.path.join(os.path.dirname(__file__), "ot_cli")}'
          f'|{os.path.join(os.path.dirname(__file__), "ot_sleepy_device")}',