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Merge branch 'reduce_bootup_time_when_using_usb-serial-jtag_v4.2' into 'release/v4.2'

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rtc_clk: reduce bootup time when using usb-serial-jtag(backport v4.2)

See merge request espressif/esp-idf!16262
This commit is contained in:
Jiang Jiang Jian
2021-12-06 03:55:21 +00:00
parent 06db6f510f 417711c390
commit 36574af3c9
1 changed files with 5 additions and 0 deletions
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5
components/soc/src/esp32s2/rtc_time.c
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@@ -64,6 +64,11 @@ uint32_t rtc_clk_cal_internal(rtc_cal_sel_t cal_clk, uint32_t slowclk_cycles)
* so we should wait the last process is done. * so we should wait the last process is done.
*/ */
if (GET_PERI_REG_MASK(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_START_CYCLING)) { if (GET_PERI_REG_MASK(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_START_CYCLING)) {
/**
* Set a small timeout threshold to accelerate the generation of timeout.
* The internal circuit will be reset when the timeout occurs and will not affect the next calibration.
*/
REG_SET_FIELD(TIMG_RTCCALICFG2_REG(0), TIMG_RTC_CALI_TIMEOUT_THRES, 1);
while (!GET_PERI_REG_MASK(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_RDY) while (!GET_PERI_REG_MASK(TIMG_RTCCALICFG_REG(0), TIMG_RTC_CALI_RDY)
&& !GET_PERI_REG_MASK(TIMG_RTCCALICFG2_REG(0), TIMG_RTC_CALI_TIMEOUT)); && !GET_PERI_REG_MASK(TIMG_RTCCALICFG2_REG(0), TIMG_RTC_CALI_TIMEOUT));
} }