diff --git a/components/bt/controller/esp32c6/bt.c b/components/bt/controller/esp32c6/bt.c
index fe3565ee71..c6a37dd7ab 100644
--- a/components/bt/controller/esp32c6/bt.c
+++ b/components/bt/controller/esp32c6/bt.c
@@ -50,6 +50,8 @@
 #include "esp_private/periph_ctrl.h"
 #include "esp_sleep.h"
 
+#include "hal/efuse_hal.h"
+
 /* Macro definition
  ************************************************************************
  */
@@ -586,6 +588,7 @@ void controller_sleep_deinit(void)
 esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
 {
     uint8_t mac[6];
+    uint32_t chip_version;
     esp_err_t ret = ESP_OK;
     ble_npl_count_info_t npl_info;
 
@@ -647,7 +650,12 @@ esp_err_t esp_bt_controller_init(esp_bt_controller_config_t *cfg)
 
     /* Enable BT-related clocks */
     modem_clock_module_enable(PERIPH_BT_MODULE);
-    modem_clock_select_lp_clock_source(PERIPH_BT_MODULE, MODEM_CLOCK_LPCLK_SRC_MAIN_XTAL, 249);
+    chip_version = efuse_hal_chip_revision();
+    if (chip_version == 0) {
+        modem_clock_select_lp_clock_source(PERIPH_BT_MODULE, MODEM_CLOCK_LPCLK_SRC_MAIN_XTAL, (160 - 1));
+    } else{
+        modem_clock_select_lp_clock_source(PERIPH_BT_MODULE, MODEM_CLOCK_LPCLK_SRC_MAIN_XTAL, (2 - 1));
+    }
     esp_phy_modem_init();
     esp_phy_enable();
     esp_btbb_enable();
diff --git a/components/bt/include/esp32c6/include/esp_bt.h b/components/bt/include/esp32c6/include/esp_bt.h
index 4b44099fed..f8eb6a2af9 100644
--- a/components/bt/include/esp32c6/include/esp_bt.h
+++ b/components/bt/include/esp32c6/include/esp_bt.h
@@ -15,6 +15,7 @@
 
 #include "nimble/nimble_npl.h"
 #include "esp_bt_cfg.h"
+#include "hal/efuse_hal.h"
 
 #ifdef CONFIG_BT_LE_HCI_INTERFACE_USE_UART
 #include "driver/uart.h"
@@ -23,7 +24,6 @@
 #ifdef __cplusplus
 extern "C" {
 #endif
-
 /**
  * @brief Bluetooth mode for controller enable/disable
  */
@@ -258,7 +258,7 @@ typedef struct {
     .dis_scan_backoff           = NIMBLE_DISABLE_SCAN_BACKOFF,                          \
     .ble_scan_classify_filter_enable         = 0,                                       \
     .main_xtal_freq             = CONFIG_XTAL_FREQ,                                     \
-    .version_num                = 0,                                                    \
+    .version_num                = efuse_hal_chip_revision(),                            \
     .cpu_freq_mhz               = CONFIG_ESP_DEFAULT_CPU_FREQ_MHZ,                      \
     .ignore_wl_for_direct_adv   = 0,                                                    \
     .enable_pcl                 = DEFAULT_BT_LE_POWER_CONTROL_ENABLED,                  \
diff --git a/components/bt/include/esp32c6/include/esp_bt_cfg.h b/components/bt/include/esp32c6/include/esp_bt_cfg.h
index 64567bccaf..658e39ae4e 100644
--- a/components/bt/include/esp32c6/include/esp_bt_cfg.h
+++ b/components/bt/include/esp32c6/include/esp_bt_cfg.h
@@ -196,7 +196,7 @@ extern "C" {
 
 #define BLE_LL_CONN_DEF_AUTH_PYLD_TMO_N     (3000)
 
-#define RTC_FREQ_N                          (160000) /* in Hz */
+#define RTC_FREQ_N                          (250000) /* in Hz */
 
 #define BLE_LL_TX_PWR_DBM_N                 (9)