README: document the CONFIG_GPIO_LED symbol

The CONFIG_GPIO_LED symbol does not have any documentation in the README file. Document the CONFIG_GPIO_LED symbol. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
11 years ago · 1df7bbba24
parent 4b756b013a
commit 1df7bbba24
1 changed files with 8 additions and 0 deletions
--- a/8
+++ b/8
@ -1963,6 +1963,14 @@ CBFS (Coreboot Filesystem) support
 		kernel). Defining CONFIG_STATUS_LED enables this
 		feature in U-Boot.

+		Additional options:
+
+		CONFIG_GPIO_LED
+		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. Define CONFIG_GPIO_LED
+		to include the gpio_led driver in the U-Boot binary.
+
 - CAN Support:	CONFIG_CAN_DRIVER

 		Defining CONFIG_CAN_DRIVER enables CAN driver support