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Common System Modules

This section covers:

  • Login and debug permissions
  • Boot0 and U-Boot
  • UART, GPIO, and pinctrl
  • Wi-Fi and network configuration
  • GPADC and PWM
  • PMC, standby, SID, and wakeup sources

Useful commands:

cat /sys/kernel/debug/pinctrl/*/pinmux-pins
cat /sys/kernel/debug/gpio
dmesg | grep -iE "pm|standby|suspend|resume|wakeup"
cat /sys/kernel/debug/wakeup_sources