diff options
Diffstat (limited to 'Documentation/devicetree/bindings/leds/leds-lm3692x.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/leds/leds-lm3692x.txt | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt new file mode 100644 index 0000000000..b1103d961d --- /dev/null +++ b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt @@ -0,0 +1,65 @@ +* Texas Instruments - LM3692x Highly Efficient White LED Driver + +The LM3692x is an ultra-compact, highly efficient, +white-LED driver designed for LCD display backlighting. + +The main difference between the LM36922 and LM36923 is the number of +LED strings it supports. The LM36922 supports two strings while the LM36923 +supports three strings. + +Required properties: + - compatible: + "ti,lm36922" + "ti,lm36923" + - reg : I2C slave address + - #address-cells : 1 + - #size-cells : 0 + +Optional properties: + - enable-gpios : gpio pin to enable/disable the device. + - vled-supply : LED supply + - ti,ovp-microvolt: Overvoltage protection in + micro-volt, can be 17000000, 21000000, 25000000 or + 29000000. If ti,ovp-microvolt is not specified it + defaults to 29000000. + +Required child properties: + - reg : 0 - Will enable all LED sync paths + 1 - Will enable the LED1 sync + 2 - Will enable the LED2 sync + 3 - Will enable the LED3 sync (LM36923 only) + +Optional child properties: + - function : see Documentation/devicetree/bindings/leds/common.txt + - color : see Documentation/devicetree/bindings/leds/common.txt + - label : see Documentation/devicetree/bindings/leds/common.txt (deprecated) + - linux,default-trigger : + see Documentation/devicetree/bindings/leds/common.txt + - led-max-microamp : + see Documentation/devicetree/bindings/leds/common.txt + +Example: + +#include <dt-bindings/leds/common.h> + +led-controller@36 { + compatible = "ti,lm3692x"; + reg = <0x36>; + #address-cells = <1>; + #size-cells = <0>; + + enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; + vled-supply = <&vbatt>; + ti,ovp-microvolt = <29000000>; + + led@0 { + reg = <0>; + function = LED_FUNCTION_BACKLIGHT; + color = <LED_COLOR_ID_WHITE>; + linux,default-trigger = "backlight"; + led-max-microamp = <20000>; + }; +} + +For more product information please see the link below: +https://www.ti.com/lit/ds/snvsa29/snvsa29.pdf |