menu "LED Support" 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 bool "Enable LED support in SPL" depends on SPL && SPL_DM 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. config LED_GPIO bool "LED support for GPIO-connected LEDs" depends on LED && DM_GPIO help Enable support for LEDs which are connected to GPIO lines. These GPIOs may be on the SoC or some other device which provides GPIOs. The GPIO driver must used driver model. LEDs are configured using the device tree. config SPL_LED_GPIO bool "LED support for GPIO-connected LEDs in SPL" depends on SPL_LED && DM_GPIO help This option is an SPL-variant of the LED_GPIO option. See the help of LED_GPIO for details. config LED_STATUS bool "Enable status LED API" help Allows common u-boot commands to use a board's leds to provide status for activities like booting and downloading files. if LED_STATUS # Hidden constants config LED_STATUS_OFF int default 0 config LED_STATUS_BLINKING int default 1 config LED_STATUS_ON int default 2 # Hidden constants end config LED_STATUS_GPIO bool "GPIO status LED implementation" help The status LED can be connected to a GPIO pin. In such cases, the gpio_led driver can be used as a status LED backend implementation. config LED_STATUS_BOARD_SPECIFIC bool "Specific board" default y help LED support is only for a specific board. comment "LEDs parameters" config LED_STATUS0 bool "Enable status LED 0" if LED_STATUS0 config LED_STATUS_BIT int "identification" help CONFIG_LED_STATUS_BIT is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ: LED_STATUS_PERIOD = CONFIG_SYS_HZ/LED_STATUS_FREQ Values range: 2 - 10 endif # LED_STATUS0 config LED_STATUS1 bool "Enable status LED 1" if LED_STATUS1 config LED_STATUS_BIT1 int "identification" help CONFIG_LED_STATUS_BIT1 is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE1 int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ1 int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ1: LED_STATUS_PERIOD1 = CONFIG_SYS_HZ/LED_STATUS_FREQ1 Values range: 2 - 10 endif # LED_STATUS1 config LED_STATUS2 bool "Enable status LED 2" if LED_STATUS2 config LED_STATUS_BIT2 int "identification" help CONFIG_LED_STATUS_BIT2 is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE2 int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ2 int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ2: LED_STATUS_PERIOD2 = CONFIG_SYS_HZ/LED_STATUS_FREQ2 Values range: 2 - 10 endif # LED_STATUS2 config LED_STATUS3 bool "Enable status LED 3" if LED_STATUS3 config LED_STATUS_BIT3 int "identification" help CONFIG_LED_STATUS_BIT3 is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE3 int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ3 int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ3: LED_STATUS_PERIOD3 = CONFIG_SYS_HZ/LED_STATUS_FREQ3 Values range: 2 - 10 endif # LED_STATUS3 config LED_STATUS4 bool "Enable status LED 4" if LED_STATUS4 config LED_STATUS_BIT4 int "identification" help CONFIG_LED_STATUS_BIT4 is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE4 int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ4 int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ4: LED_STATUS_PERIOD4 = CONFIG_SYS_HZ/LED_STATUS_FREQ4 Values range: 2 - 10 endif # LED_STATUS4 config LED_STATUS5 bool "Enable status LED 5" if LED_STATUS5 config LED_STATUS_BIT5 int "identification" help CONFIG_LED_STATUS_BIT5 is passed into the __led_* functions to identify which LED is being acted on. As such, the chosen value must be unique with respect to the other CONFIG_LED_STATUS_BIT's. Mapping the value to a physical LED is the responsibility of the __led_* function. config LED_STATUS_STATE5 int "initial state" range LED_STATUS_OFF LED_STATUS_ON default LED_STATUS_OFF help Should be set one of the following: 0 - off 1 - blinking 2 - on config LED_STATUS_FREQ5 int "blink frequency" range 2 10 default 2 help The LED blink period calculated from LED_STATUS_FREQ5: LED_STATUS_PERIOD5 = CONFIG_SYS_HZ/LED_STATUS_FREQ5 Values range: 2 - 10 endif # LED_STATUS5 config LED_STATUS_BOOT_ENABLE bool "Enable BOOT LED" help Enable to turn an LED on when the board is booting. if LED_STATUS_BOOT_ENABLE config LED_STATUS_BOOT int "LED to light when the board is booting" help Valid enabled LED device number. endif # LED_STATUS_BOOT_ENABLE config LED_STATUS_RED_ENABLE bool "Enable red LED" help Enable red status LED. if LED_STATUS_RED_ENABLE config LED_STATUS_RED int "Red LED identification" help Valid enabled LED device number. endif # LED_STATUS_RED_ENABLE config LED_STATUS_YELLOW_ENABLE bool "Enable yellow LED" help Enable yellow status LED. if LED_STATUS_YELLOW_ENABLE config LED_STATUS_YELLOW int "Yellow LED identification" help Valid enabled LED device number. endif # LED_STATUS_YELLOW_ENABLE config LED_STATUS_BLUE_ENABLE bool "Enable blue LED" help Enable blue status LED. if LED_STATUS_BLUE_ENABLE config LED_STATUS_BLUE int "Blue LED identification" help Valid enabled LED device number. endif # LED_STATUS_BLUE_ENABLE config LED_STATUS_GREEN_ENABLE bool "Enable green LED" help Enable green status LED. if LED_STATUS_GREEN_ENABLE config LED_STATUS_GREEN int "Green LED identification" help Valid enabled LED device number (0-5). endif # LED_STATUS_GREEN_ENABLE config LED_STATUS_CMD bool "Enable status LED commands" endif # LED_STATUS endmenu