dm: Add support for LEDs
Add a simple uclass for LEDs, so that these can be controlled by the device
tree and activated when needed. LEDs are referred to by their label.
This implementation requires a driver for each type of LED (e.g GPIO, I2C).
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/led/Kconfig b/drivers/led/Kconfig
new file mode 100644
index 0000000..e4d9a84
--- /dev/null
+++ b/drivers/led/Kconfig
@@ -0,0 +1,17 @@
+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.