rt-thread/components/drivers/led/Kconfig

menuconfig RT_USING_LED
    bool "Using Light Emitting Diode (LED) device drivers"
    depends on RT_USING_DM
    default n
    help
      Enable the LED framework so on-board indicators described in device tree
      can be registered and controlled via `rt_led_set_state()` (on/off/blink).
      The core parses LED nodes, exports sysfs-like control via IPC, and lets
      other subsystems (for example triggers) manipulate them. Disable it when
      the hardware has no controllable LEDs.

config RT_LED_GPIO
    bool "GPIO connected LEDs Support"
    depends on RT_USING_LED
    depends on RT_USING_PINCTRL
    depends on RT_USING_OFW
    default n
    help
      Provide the GPIO-backed LED driver that maps each `leds` device-tree node
      to a pin, honours `default-state`/`default-trigger`, and optionally
      applies pinctrl states per LED. Enable this for the common case where
      LEDs are tied directly to GPIOs; leave disabled if LEDs are driven through
      a different bus (I2C expanders, PMICs, etc.).

config RT_LED_PWM
    bool "PWM driven LEDs Support"
    depends on RT_USING_LED
    depends on RT_USING_PWM
    depends on RT_USING_OFW
    default n

config RT_LED_SYSCON
    bool "System controllers connected LEDs Support"
    depends on RT_USING_LED
    depends on RT_MFD_SYSCON
    default n

if RT_USING_LED
    osource "$(SOC_DM_LED_DIR)/Kconfig"
endif