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change(esp_hw_support/sleep): improve esp32c3 systimer stall bug workaround

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wuzhenghui 2024-05-28 16:25:03 +08:00
parent 822fbc2fc2
commit 339ae99b04
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GPG Key ID: 3EFEDECDEBA39BB9
6 changed files with 25 additions and 47 deletions
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12
components/esp_hw_support/Kconfig
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@ -100,18 +100,6 @@ menu "Hardware Settings"
make use of the internal ones.
endmenu
menu "ESP_SLEEP_WORKAROUND"
# No visible menu/configs for workaround
visible if 0
config ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
bool "ESP32C3 SYSTIMER Stall Issue Workaround"
depends on IDF_TARGET_ESP32C3
help
Its not able to stall ESP32C3 systimer in sleep.
To fix related RTOS TICK issue, select it to disable related systimer during sleep.
TODO: IDF-7036
endmenu
menu "RTC Clock Config"
# This is used for configure the RTC clock.
config RTC_CLOCK_BBPLL_POWER_ON_WITH_USB

13
components/esp_hw_support/port/esp32c3/rtc_sleep.c
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@ -25,7 +25,7 @@
#include "regi2c_ctrl.h"
#include "esp_efuse.h"
#include "hal/efuse_hal.h"
#if CONFIG_ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
#if SOC_SLEEP_SYSTIMER_STALL_WORKAROUND
#include "soc/systimer_reg.h"
#endif
@ -259,17 +259,6 @@ void rtc_sleep_set_wakeup_time(uint64_t t)
WRITE_PERI_REG(RTC_CNTL_SLP_TIMER1_REG, t >> 32);
}
#if CONFIG_ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
void rtc_sleep_systimer_enable(bool en)
{
if (en) {
REG_SET_BIT(SYSTIMER_CONF_REG, SYSTIMER_TIMER_UNIT1_WORK_EN);
} else {
REG_CLR_BIT(SYSTIMER_CONF_REG, SYSTIMER_TIMER_UNIT1_WORK_EN);
}
}
#endif
static uint32_t rtc_sleep_finish(uint32_t lslp_mem_inf_fpu);
uint32_t rtc_sleep_start(uint32_t wakeup_opt, uint32_t reject_opt, uint32_t lslp_mem_inf_fpu)

29
components/esp_hw_support/sleep_modes.c
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@ -25,6 +25,10 @@
#include "driver/rtc_io.h"
#include "hal/rtc_io_hal.h"
#if SOC_SLEEP_SYSTIMER_STALL_WORKAROUND
#include "hal/systimer_ll.h"
#endif
#include "driver/uart.h"
#include "soc/cpu.h"
@ -530,11 +534,6 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
timer_wakeup_prepare();
}
#if CONFIG_ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
if (!(pd_flags & RTC_SLEEP_PD_XTAL)) {
rtc_sleep_systimer_enable(false);
}
#endif
uint32_t result;
if (deep_sleep) {
@ -564,18 +563,26 @@ static uint32_t IRAM_ATTR esp_sleep_start(uint32_t pd_flags)
#endif
#endif // SOC_PM_SUPPORT_DEEPSLEEP_VERIFY_STUB_ONLY
} else {
#if SOC_SLEEP_SYSTIMER_STALL_WORKAROUND
if (!(pd_flags & RTC_SLEEP_PD_XTAL)) {
for (uint32_t counter_id = 0; counter_id < SOC_SYSTIMER_COUNTER_NUM; ++counter_id) {
systimer_ll_enable_counter(&SYSTIMER, counter_id, false);
}
}
#endif
uint32_t cache_state;
uint32_t cpuid = cpu_ll_get_core_id();
spi_flash_disable_cache(cpuid, &cache_state);
result = call_rtc_sleep_start(reject_triggers, config.lslp_mem_inf_fpu);
spi_flash_restore_cache(cpuid, cache_state);
}
#if CONFIG_ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
if (!(pd_flags & RTC_SLEEP_PD_XTAL)) {
rtc_sleep_systimer_enable(true);
}
#if SOC_SLEEP_SYSTIMER_STALL_WORKAROUND
if (!(pd_flags & RTC_SLEEP_PD_XTAL)) {
for (uint32_t counter_id = 0; counter_id < SOC_SYSTIMER_COUNTER_NUM; ++counter_id) {
systimer_ll_enable_counter(&SYSTIMER, counter_id, true);
}
}
#endif
}
// Restore CPU frequency
rtc_clk_cpu_freq_set_config(&cpu_freq_config);

4
components/esp_timer/src/esp_timer_impl_systimer.c
View File

@ -122,6 +122,10 @@ esp_err_t esp_timer_impl_early_init(void)
systimer_hal_select_alarm_mode(&systimer_hal, SYSTIMER_LL_ALARM_CLOCK, SYSTIMER_ALARM_MODE_ONESHOT);
systimer_hal_connect_alarm_counter(&systimer_hal, SYSTIMER_LL_ALARM_CLOCK, SYSTIMER_LL_COUNTER_CLOCK);
for (unsigned cpuid = 0; cpuid < SOC_CPU_CORES_NUM; ++cpuid) {
systimer_hal_counter_can_stall_by_cpu(&systimer_hal, SYSTIMER_LL_COUNTER_CLOCK, cpuid, (cpuid < portNUM_PROCESSORS) ? true : false);
}
return ESP_OK;
}

12
components/soc/esp32c3/include/soc/rtc.h
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@ -738,18 +738,6 @@ void rtc_sleep_low_init(uint32_t slowclk_period);
*/
void rtc_sleep_set_wakeup_time(uint64_t t);
#if CONFIG_ESP_SLEEP_SYSTIMER_STALL_WORKAROUND
/**
* @brief Configure systimer for esp32c3 systimer stall issue workaround
*
* This function configures related systimer for esp32c3 systimer stall issue.
* Only apply workaround when xtal powered up.
*
* @param en enable systimer or not
*/
void rtc_sleep_systimer_enable(bool en);
#endif
#define RTC_GPIO_TRIG_EN BIT(2) //!< GPIO wakeup
#define RTC_TIMER_TRIG_EN BIT(3) //!< Timer wakeup
#define RTC_WIFI_TRIG_EN BIT(5) //!< WIFI wakeup (light sleep only)

2
components/soc/esp32c3/include/soc/soc_caps.h
View File

@ -178,6 +178,8 @@
#define SOC_RTC_SLOW_CLOCK_SUPPORT_8MD256 (1)
#define SOC_SLEEP_SYSTIMER_STALL_WORKAROUND (1)
/*-------------------------- RTCIO CAPS --------------------------------------*/
/* No dedicated RTCIO subsystem on ESP32-C3. RTC functions are still supported
* for hold, wake & 32kHz crystal functions - via rtc_cntl_reg */