1config LED 2 bool "Enable LED support" 3 depends on DM 4 help 5 Many boards have LEDs which can be used to signal status or alerts. 6 U-Boot provides a uclass API to implement this feature. LED drivers 7 can provide access to board-specific LEDs. Use of the device tree 8 for configuration is encouraged. 9 10config SPL_LED_SUPPORT 11 bool "Enable LED support in SPL" 12 depends on LED 13 help 14 The LED subsystem adds a small amount of overhead to the image. 15 If this is acceptable and you have a need to use LEDs in SPL, 16 enable this option. You will need to enable device tree in SPL 17 for this to work. 18 19config LED_GPIO 20 bool "LED support for GPIO-connected LEDs" 21 depends on LED && DM_GPIO 22 help 23 Enable support for LEDs which are connected to GPIO lines. These 24 GPIOs may be on the SoC or some other device which provides GPIOs. 25 The GPIO driver must used driver model. LEDs are configured using 26 the device tree. 27