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drivers: hci: stm32_ipm: Add possibility to work on LSI

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Use CLOCK_STM32_LSE as switch for the RF low speed clock source

Signed-off-by: Pavlo Hamov <pavlo_hamov@jabil.com>
This commit is contained in:
Pavlo Hamov 2019-10-17 12:31:38 +03:00 • committed by Kumar Gala
commit 535bfeb784
1 changed files with 11 additions and 0 deletions
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11
drivers/bluetooth/hci/ipm_stm32wb.c
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@ -327,6 +327,7 @@ static void start_ble_rf(void)
LL_RCC_ReleaseBackupDomainReset();
}
#ifdef CONFIG_CLOCK_STM32_LSE
/* Select LSE clock */
LL_RCC_LSE_Enable();
while (!LL_RCC_LSE_IsReady()) {
@ -338,6 +339,16 @@ static void start_ble_rf(void)
/* Switch OFF LSI */
LL_RCC_LSI1_Disable();
#else
LL_RCC_LSI2_Enable();
while (!LL_RCC_LSI2_IsReady()) {
}
/* Select wakeup source of BLE RF */
LL_RCC_SetRFWKPClockSource(LL_RCC_RFWKP_CLKSOURCE_LSI);
LL_RCC_SetRTCClockSource(LL_RCC_RTC_CLKSOURCE_LSI);
#endif
/* Set RNG on HSI48 */
LL_RCC_HSI48_Enable();
while (!LL_RCC_HSI48_IsReady()) {