feat(ble): update ble power save sdkconfig on ESP32-H21

(cherry picked from commit 2f89346103)

Co-authored-by: cjin <jinchen@espressif.com>

examples/bluetooth/nimble/power_save/README.md

@@ -30,6 +30,8 @@ This example contains some build configurations. For each configuration, a few c
 - `sdkconfig.40m.esp32s31`: ESP32S31 uses main XTAL as low power clock in light sleep enabled.
 - `sdkconfig.defaults.esp32h4`: ESP32H4 uses 32kHz XTAL as low power clock in light sleep enabled.
 - `sdkconfig.32m.esp32h4`: ESP32H4 uses main XTAL as low power clock in light sleep enabled.
+- `sdkconfig.defaults.esp32h21`: ESP32H21 uses 32kHz XTAL as low power clock in light sleep enabled.
+- `sdkconfig.32m.esp32h21`: ESP32H21 uses main XTAL as low power clock in light sleep enabled.
 
 ## How to use example
 

examples/bluetooth/nimble/power_save/sdkconfig.32m.esp32h21

@@ -0,0 +1,22 @@
+CONFIG_IDF_TARGET="esp32h21"
+
+# Bluetooth Low Power Config
+CONFIG_BT_LE_SLEEP_ENABLE=y
+CONFIG_BT_LE_LP_CLK_SRC_MAIN_XTAL=y
+
+#
+# Power Management
+#
+CONFIG_PM_ENABLE=y
+CONFIG_PM_DFS_INIT_AUTO=y
+CONFIG_PM_POWER_DOWN_CPU_IN_LIGHT_SLEEP=y
+CONFIG_PM_POWER_DOWN_PERIPHERAL_IN_LIGHT_SLEEP=y
+# end of Power Management
+
+CONFIG_ESP_MODEM_CLOCK_ENABLE_CHECKING=y
+
+#
+# Sleep Config
+#
+CONFIG_ESP_SLEEP_CACHE_SAFE_ASSERTION=y
+# end of Sleep Config

examples/bluetooth/nimble/power_save/sdkconfig.defaults.esp32h21

@@ -1,3 +1,5 @@
+CONFIG_IDF_TARGET="esp32h21"
+
 # Bluetooth Low Power Config
 CONFIG_BT_LE_SLEEP_ENABLE=y
 CONFIG_BT_LE_LP_CLK_SRC_DEFAULT=y
@@ -16,7 +18,6 @@ CONFIG_ESP_MODEM_CLOCK_ENABLE_CHECKING=y
 #
 # Sleep Config
 #
-CONFIG_ESP_SLEEP_POWER_DOWN_FLASH=y
 CONFIG_ESP_SLEEP_CACHE_SAFE_ASSERTION=y
 # end of Sleep Config