^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) Bindings for Linear Technologies LT3593 LED controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) Required properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) - compatible: Should be "lltc,lt3593".
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) - lltc,ctrl-gpios: A handle to the GPIO that is connected to the 'CTRL'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) pin of the chip.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) The hardware supports only one LED. The properties of this LED are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) configured in a sub-node in the device node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Optional sub-node properties:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) - function: See Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) - color: See Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) - label: A label for the LED. If none is given, the LED will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) named "lt3595::" (deprecated)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) - linux,default-trigger: The default trigger for the LED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) See Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) - default-state: The initial state of the LED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) See Documentation/devicetree/bindings/leds/common.txt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) If multiple chips of this type are found in a design, each one needs to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) be handled by its own device node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) Example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <dt-bindings/leds/common.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) led-controller {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) compatible = "lltc,lt3593";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) lltc,ctrl-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) led {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) function = LED_FUNCTION_BACKLIGHT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) color = <LED_COLOR_ID_WHITE>;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) default-state = "on";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) };