config LED bool "Enable LED support" depends on DM help Many boards have LEDs which can be used to signal status or alerts. U-Boot provides a uclass API to implement this feature. LED drivers can provide access to board-specific LEDs. Use of the device tree for configuration is encouraged. config SPL_LED_SUPPORT bool "Enable LED support in SPL" depends on LED help The LED subsystem adds a small amount of overhead to the image. If this is acceptable and you have a need to use LEDs in SPL, enable this option. You will need to enable device tree in SPL for this to work.