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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 LED_BLINK
bool "Support LED blinking"
depends on LED
help
Some drivers can support automatic blinking of LEDs with a given
period, without needing timers or extra code to handle the timing.
This option enables support for this which adds slightly to the
code size.
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
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