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Merge branch 'bugfix/s3_ulp_riscv_cocpu_trap' into 'master'

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ulp-riscv: always force COCPU clock on S3

Closes FCS-983

See merge request espressif/esp-idf!20632
This commit is contained in:
Marius Vikhammer 2022-10-25 13:50:36 +08:00
commit 4a56758547
1 changed files with 5 additions and 2 deletions
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7
components/ulp/ulp_riscv/ulp_riscv.c
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@ -73,12 +73,15 @@ esp_err_t ulp_riscv_config_and_run(ulp_riscv_cfg_t* cfg)
#elif CONFIG_IDF_TARGET_ESP32S3
/* Reset COCPU when power on. */
SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_CLK_FO);
SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_SHUT_RESET_EN);
esp_rom_delay_us(20);
CLEAR_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_CLK_FO);
CLEAR_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_SHUT_RESET_EN);
/* The coprocessor cpu trap signal doesnt have a stable reset value,
force ULP-RISC-V clock on to stop RTC_COCPU_TRAP_TRIG_EN from waking the CPU*/
SET_PERI_REG_MASK(RTC_CNTL_COCPU_CTRL_REG, RTC_CNTL_COCPU_CLK_FO);
/* Disable ULP timer */
CLEAR_PERI_REG_MASK(RTC_CNTL_ULP_CP_TIMER_REG, RTC_CNTL_ULP_CP_SLP_TIMER_EN);
/* wait for at least 1 RTC_SLOW_CLK cycle */