diff --git a/components/bt/controller/esp32c2/bt.c b/components/bt/controller/esp32c2/bt.c
index 60046816d1..8eb4212a25 100644
--- a/components/bt/controller/esp32c2/bt.c
+++ b/components/bt/controller/esp32c2/bt.c
@@ -571,12 +571,18 @@ void ble_rtc_clk_init(void)
     // LP_TIMER_SEL_XTAL -> 1
     // LP_TIMER_SEL_8M -> 0
     // LP_TIMER_SEL_RTC_SLOW -> 0
-    // LP_TIMER_CLK_DIV_NUM -> 1250
     SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, 1, 0, MODEM_CLKRST_LP_TIMER_SEL_XTAL32K_S);
     SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, 1, 1, MODEM_CLKRST_LP_TIMER_SEL_XTAL_S);
     SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, 1, 0, MODEM_CLKRST_LP_TIMER_SEL_8M_S);
     SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, 1, 0, MODEM_CLKRST_LP_TIMER_SEL_RTC_SLOW_S);
+
+#ifdef CONFIG_ESP32C2_XTAL_FREQ_26
+    // LP_TIMER_CLK_DIV_NUM -> 130
+    SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, MODEM_CLKRST_LP_TIMER_CLK_DIV_NUM, 129, MODEM_CLKRST_LP_TIMER_CLK_DIV_NUM_S);
+#else
+    // LP_TIMER_CLK_DIV_NUM -> 250
     SET_PERI_REG_BITS(MODEM_CLKRST_MODEM_LP_TIMER_CONF_REG, MODEM_CLKRST_LP_TIMER_CLK_DIV_NUM, 249, MODEM_CLKRST_LP_TIMER_CLK_DIV_NUM_S);
+#endif // CONFIG_ESP32C2_XTAL_FREQ_26
 
     // MODEM_CLKRST_ETM_CLK_ACTIVE -> 1
     // MODEM_CLKRST_ETM_CLK_SEL -> 0
diff --git a/components/bt/controller/lib_esp32c2/esp32c2-bt-lib b/components/bt/controller/lib_esp32c2/esp32c2-bt-lib
index d652897062..bdab852aa2 160000
--- a/components/bt/controller/lib_esp32c2/esp32c2-bt-lib
+++ b/components/bt/controller/lib_esp32c2/esp32c2-bt-lib
@@ -1 +1 @@
-Subproject commit d6528970622a611dc9ad4a9fc31a5a9fc1996d74
+Subproject commit bdab852aa2adf459d643731b513a4431003943b6
diff --git a/components/bt/include/esp32c2/include/esp_bt.h b/components/bt/include/esp32c2/include/esp_bt.h
index dcda2e57c3..41c1876da8 100644
--- a/components/bt/include/esp32c2/include/esp_bt.h
+++ b/components/bt/include/esp32c2/include/esp_bt.h
@@ -118,7 +118,7 @@ esp_err_t esp_ble_tx_power_set(esp_ble_power_type_t power_type, esp_power_level_
 esp_power_level_t esp_ble_tx_power_get(esp_ble_power_type_t power_type);
 
 
-#define CONFIG_VERSION  0x20220105
+#define CONFIG_VERSION  0x20220729
 #define CONFIG_MAGIC    0x5A5AA5A5
 
 /**
@@ -173,6 +173,7 @@ typedef struct {
     uint8_t coex_phy_coded_tx_rx_time_limit;
     uint8_t dis_scan_backoff;
     uint8_t esp_scan_filter_en;
+    uint8_t main_xtal_freq;
     uint32_t config_magic;
 } esp_bt_controller_config_t;
 
@@ -223,6 +224,7 @@ typedef struct {
     .coex_phy_coded_tx_rx_time_limit = DEFAULT_BT_LE_COEX_PHY_CODED_TX_RX_TLIM_EFF,     \
     .dis_scan_backoff           = NIMBLE_DISABLE_SCAN_BACKOFF,                          \
     .esp_scan_filter_en         = 0,                                                    \
+    .main_xtal_freq             = CONFIG_ESP32C2_XTAL_FREQ,                             \
     .config_magic = CONFIG_MAGIC,                                                       \
 };
 
diff --git a/components/bt/include/esp32c2/include/esp_bt_cfg.h b/components/bt/include/esp32c2/include/esp_bt_cfg.h
index 9868dec79c..6ecad038f0 100644
--- a/components/bt/include/esp32c2/include/esp_bt_cfg.h
+++ b/components/bt/include/esp32c2/include/esp_bt_cfg.h
@@ -192,7 +192,11 @@ extern "C" {
 
 #define BLE_LL_CONN_DEF_AUTH_PYLD_TMO_N     (3000)
 
-#define RTC_FREQ_N                          (32000) /* in Hz */
+#ifdef CONFIG_ESP32C2_XTAL_FREQ_26
+    #define RTC_FREQ_N                      (40000) /* in Hz */
+#else
+    #define RTC_FREQ_N                      (32000) /* in Hz */
+#endif // CONFIG_ESP32C2_XTAL_FREQ_26
 
 #define BLE_LL_TX_PWR_DBM_N                 (0)
 
diff --git a/components/esp_rom/esp32c2/ld/esp32c2.rom.ld b/components/esp_rom/esp32c2/ld/esp32c2.rom.ld
index 8940355485..3a84a78bbb 100644
--- a/components/esp_rom/esp32c2/ld/esp32c2.rom.ld
+++ b/components/esp_rom/esp32c2/ld/esp32c2.rom.ld
@@ -1415,7 +1415,6 @@ r_ble_phy_get_packet_status = 0x40001818;
 r_ble_phy_get_pyld_time_offset = 0x4000181c;
 r_ble_phy_get_rx_phy_mode = 0x40001820;
 r_ble_phy_get_seq_end_st = 0x40001824;
-r_ble_phy_init = 0x40001828;
 r_ble_phy_isr = 0x4000182c;
 r_ble_phy_max_data_pdu_pyld = 0x40001830;
 r_ble_phy_mode_config = 0x40001834;
@@ -1498,7 +1497,6 @@ r_hal_rtc_irq_handler = 0x40001964;
 r_hal_timer_deinit = 0x40001968;
 r_hal_timer_disable_irq = 0x4000196c;
 r_hal_timer_env_init = 0x40001970;
-r_hal_timer_init = 0x40001974;
 r_hal_timer_process = 0x40001978;
 r_hal_timer_read = 0x4000197c;
 r_hal_timer_read_tick = 0x40001980;