walnux/boards/xtensa
Thiago Finelon e87c43b798 arch/xtensa/esp32s3: Add EXT1 wakeup support in power management
Introduce EXT1 wakeup functionality to the ESP32-S3 power management
subsystem. With this feature, the ESP32-S3 can wake up from PM_STANDBY
or PM_SLEEP when one or more RTC GPIOs trigger the EXT1 condition.

Changes include:
- Added EXT1 wakeup configuration and preparation logic in rtc code.
- Integrated EXT1 handling in pmstandby() and pmsleep().
- New board-level Kconfig options under ESP32-S3 DevKit menu:
  - CONFIG_PM_EXT1_WAKEUP: enable EXT1 wakeup support
  - CONFIG_PM_EXT1_WAKEUP_RTC_GPIO<n>: select RTC GPIOs as wake sources
  - CONFIG_PM_EXT1_WAKEUP_TRIGGER_MODE: choose wakeup on HIGH or LOW level
- Fixing Kconfig style
- Fixing comments standard
- Adding PM documentation for esp32s3-devkit

Impact:
- No build impact unless CONFIG_PM_EXT1_WAKEUP is enabled.
- When enabled, ESP32-S3 can wake from low-power states via RTC GPIOs.
- No new public API introduced; controlled via board Kconfig.

Tested on ESP32-S3 DevKit:
- Configured GPIO4 and GPIO5 as EXT1 wake sources.
- Verified wakeup from light sleep and deep sleep on external signals.
- Wakeup reason correctly reported as EXT1.

Signed-off-by: Thiago Finelon <thiago.sfinelon@gmail.com>
2025-08-24 11:32:10 -03:00
..
esp32 boards/xtensa: Revert mdtblock initialization for esp32[-|-s2|-s3] 2025-08-15 16:42:46 -03:00
esp32s2 boards/xtensa: Revert mdtblock initialization for esp32[-|-s2|-s3] 2025-08-15 16:42:46 -03:00
esp32s3 arch/xtensa/esp32s3: Add EXT1 wakeup support in power management 2025-08-24 11:32:10 -03:00