[v3,1/3] dt-bindings: leds: document the "power-supply" property
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Message ID 20190717135948.19340-2-jjhiblot@ti.com
State New
Headers show
  • leds: Add control of the voltage/current regulator to the LED core
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Commit Message

Jean-Jacques Hiblot July 17, 2019, 1:59 p.m. UTC
Sometimes LEDs are powered by a voltage/current regulator. Describing it
in the device-tree makes it possible for the LED core to enable/disable it
when needed.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Dan Murphy <dmurphy@ti.com>
 Documentation/devicetree/bindings/leds/common.txt | 4 ++++
 1 file changed, 4 insertions(+)

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diff --git a/Documentation/devicetree/bindings/leds/common.txt b/Documentation/devicetree/bindings/leds/common.txt
index 70876ac11367..f496ec1c1542 100644
--- a/Documentation/devicetree/bindings/leds/common.txt
+++ b/Documentation/devicetree/bindings/leds/common.txt
@@ -61,6 +61,9 @@  Optional properties for child nodes:
 - panic-indicator : This property specifies that the LED should be used,
 		    if at all possible, as a panic indicator.
+- power-supply : Is a phandle to a voltage/current regulator used to to power
+		 the LED.
 - trigger-sources : List of devices which should be used as a source triggering
 		    this LED activity. Some LEDs can be related to a specific
 		    device and should somehow indicate its state. E.g. USB 2.0
@@ -106,6 +109,7 @@  gpio-leds {
 		label = "Status";
 		linux,default-trigger = "heartbeat";
 		gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+		power-supply = <&led_regulator>;
 	usb {