0001 * Texas Instruments - LM3692x Highly Efficient White LED Driver
0002
0003 The LM3692x is an ultra-compact, highly efficient,
0004 white-LED driver designed for LCD display backlighting.
0005
0006 The main difference between the LM36922 and LM36923 is the number of
0007 LED strings it supports. The LM36922 supports two strings while the LM36923
0008 supports three strings.
0009
0010 Required properties:
0011 - compatible:
0012 "ti,lm36922"
0013 "ti,lm36923"
0014 - reg : I2C slave address
0015 - #address-cells : 1
0016 - #size-cells : 0
0017
0018 Optional properties:
0019 - enable-gpios : gpio pin to enable/disable the device.
0020 - vled-supply : LED supply
0021 - ti,ovp-microvolt: Overvoltage protection in
0022 micro-volt, can be 17000000, 21000000, 25000000 or
0023 29000000. If ti,ovp-microvolt is not specified it
0024 defaults to 29000000.
0025
0026 Required child properties:
0027 - reg : 0 - Will enable all LED sync paths
0028 1 - Will enable the LED1 sync
0029 2 - Will enable the LED2 sync
0030 3 - Will enable the LED3 sync (LM36923 only)
0031
0032 Optional child properties:
0033 - function : see Documentation/devicetree/bindings/leds/common.txt
0034 - color : see Documentation/devicetree/bindings/leds/common.txt
0035 - label : see Documentation/devicetree/bindings/leds/common.txt (deprecated)
0036 - linux,default-trigger :
0037 see Documentation/devicetree/bindings/leds/common.txt
0038 - led-max-microamp :
0039 see Documentation/devicetree/bindings/leds/common.txt
0040
0041 Example:
0042
0043 #include <dt-bindings/leds/common.h>
0044
0045 led-controller@36 {
0046 compatible = "ti,lm3692x";
0047 reg = <0x36>;
0048 #address-cells = <1>;
0049 #size-cells = <0>;
0050
0051 enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
0052 vled-supply = <&vbatt>;
0053 ti,ovp-microvolt = <29000000>;
0054
0055 led@0 {
0056 reg = <0>;
0057 function = LED_FUNCTION_BACKLIGHT;
0058 color = <LED_COLOR_ID_WHITE>;
0059 linux,default-trigger = "backlight";
0060 led-max-microamp = <20000>;
0061 };
0062 }
0063
0064 For more product information please see the link below:
0065 https://www.ti.com/lit/ds/snvsa29/snvsa29.pdf
