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fix(gpio): esp32p4 IOs cannot keep being held in the entire deep sleep process

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Song Ruo Jing
2024-08-05 21:00:37 +08:00
parent 1171c3c281
commit 706935f468
30 changed files with 156 additions and 25 deletions
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5
components/hal/esp32p4/include/hal/gpio_ll.h
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@@ -468,6 +468,11 @@ static inline void gpio_ll_get_drive_capability(gpio_dev_t *hw, uint32_t gpio_nu
*strength = (gpio_drive_cap_t)(IO_MUX.gpio[gpio_num].fun_drv);
}
// On ESP32P4, all digital GPIO pads can be held together during Deep-sleep through PMU.hp_sys[PMU_MODE_HP_SLEEP].syscntl.hp_pad_hold_all = 1
// However, since the hold register for digital IOs is in TOP domain (HP_SYSTEM.gpio_o_hold_ctrlx), it gets powered down in Deep-sleep.
// Therefore, after waking up from Deep-sleep, the register has been reset, it is not able to hold at that time.
// In all, the users can not achieve the purpose of being hold all the time. So this feature is considered not usable on P4.
/**
* @brief Enable gpio pad hold function.
*