diff --git a/components/soc/esp32/rtc_clk.c b/components/soc/esp32/rtc_clk.c index 2501373fc..2c462ed40 100644 --- a/components/soc/esp32/rtc_clk.c +++ b/components/soc/esp32/rtc_clk.c @@ -39,10 +39,16 @@ #define RTC_SLOW_CLK_FREQ_8MD256 (RTC_FAST_CLK_FREQ_8M / 256) #define RTC_SLOW_CLK_FREQ_32K 32768 +/* BBPLL configuration values */ #define BBPLL_ENDIV5_VAL_320M 0x43 #define BBPLL_BBADC_DSMP_VAL_320M 0x84 #define BBPLL_ENDIV5_VAL_480M 0xc3 #define BBPLL_BBADC_DSMP_VAL_480M 0x74 +#define BBPLL_IR_CAL_DELAY_VAL 0x18 +#define BBPLL_IR_CAL_EXT_CAP_VAL 0x20 +#define BBPLL_OC_ENB_FCAL_VAL 0x9a +#define BBPLL_OC_ENB_VCON_VAL 0x00 + #define APLL_SDM_STOP_VAL_1 0x09 #define APLL_SDM_STOP_VAL_2_REV0 0x69 @@ -429,6 +435,12 @@ static void rtc_clk_bbpll_enable() CLEAR_PERI_REG_MASK(RTC_CNTL_OPTIONS0_REG, RTC_CNTL_BIAS_I2C_FORCE_PD | RTC_CNTL_BB_I2C_FORCE_PD | RTC_CNTL_BBPLL_FORCE_PD | RTC_CNTL_BBPLL_I2C_FORCE_PD); + + /* reset BBPLL configuration */ + I2C_WRITEREG_RTC(I2C_BBPLL, I2C_BBPLL_IR_CAL_DELAY, BBPLL_IR_CAL_DELAY_VAL); + I2C_WRITEREG_RTC(I2C_BBPLL, I2C_BBPLL_IR_CAL_EXT_CAP, BBPLL_IR_CAL_EXT_CAP_VAL); + I2C_WRITEREG_RTC(I2C_BBPLL, I2C_BBPLL_OC_ENB_FCAL, BBPLL_OC_ENB_FCAL_VAL); + I2C_WRITEREG_RTC(I2C_BBPLL, I2C_BBPLL_OC_ENB_VCON, BBPLL_OC_ENB_VCON_VAL); } /**