162306a36Sopenharmony_ci* Texas Instruments - LM3692x Highly Efficient White LED Driver 262306a36Sopenharmony_ci 362306a36Sopenharmony_ciThe LM3692x is an ultra-compact, highly efficient, 462306a36Sopenharmony_ciwhite-LED driver designed for LCD display backlighting. 562306a36Sopenharmony_ci 662306a36Sopenharmony_ciThe main difference between the LM36922 and LM36923 is the number of 762306a36Sopenharmony_ciLED strings it supports. The LM36922 supports two strings while the LM36923 862306a36Sopenharmony_cisupports three strings. 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ciRequired properties: 1162306a36Sopenharmony_ci - compatible: 1262306a36Sopenharmony_ci "ti,lm36922" 1362306a36Sopenharmony_ci "ti,lm36923" 1462306a36Sopenharmony_ci - reg : I2C slave address 1562306a36Sopenharmony_ci - #address-cells : 1 1662306a36Sopenharmony_ci - #size-cells : 0 1762306a36Sopenharmony_ci 1862306a36Sopenharmony_ciOptional properties: 1962306a36Sopenharmony_ci - enable-gpios : gpio pin to enable/disable the device. 2062306a36Sopenharmony_ci - vled-supply : LED supply 2162306a36Sopenharmony_ci - ti,ovp-microvolt: Overvoltage protection in 2262306a36Sopenharmony_ci micro-volt, can be 17000000, 21000000, 25000000 or 2362306a36Sopenharmony_ci 29000000. If ti,ovp-microvolt is not specified it 2462306a36Sopenharmony_ci defaults to 29000000. 2562306a36Sopenharmony_ci 2662306a36Sopenharmony_ciRequired child properties: 2762306a36Sopenharmony_ci - reg : 0 - Will enable all LED sync paths 2862306a36Sopenharmony_ci 1 - Will enable the LED1 sync 2962306a36Sopenharmony_ci 2 - Will enable the LED2 sync 3062306a36Sopenharmony_ci 3 - Will enable the LED3 sync (LM36923 only) 3162306a36Sopenharmony_ci 3262306a36Sopenharmony_ciOptional child properties: 3362306a36Sopenharmony_ci - function : see Documentation/devicetree/bindings/leds/common.txt 3462306a36Sopenharmony_ci - color : see Documentation/devicetree/bindings/leds/common.txt 3562306a36Sopenharmony_ci - label : see Documentation/devicetree/bindings/leds/common.txt (deprecated) 3662306a36Sopenharmony_ci - linux,default-trigger : 3762306a36Sopenharmony_ci see Documentation/devicetree/bindings/leds/common.txt 3862306a36Sopenharmony_ci - led-max-microamp : 3962306a36Sopenharmony_ci see Documentation/devicetree/bindings/leds/common.txt 4062306a36Sopenharmony_ci 4162306a36Sopenharmony_ciExample: 4262306a36Sopenharmony_ci 4362306a36Sopenharmony_ci#include <dt-bindings/leds/common.h> 4462306a36Sopenharmony_ci 4562306a36Sopenharmony_ciled-controller@36 { 4662306a36Sopenharmony_ci compatible = "ti,lm3692x"; 4762306a36Sopenharmony_ci reg = <0x36>; 4862306a36Sopenharmony_ci #address-cells = <1>; 4962306a36Sopenharmony_ci #size-cells = <0>; 5062306a36Sopenharmony_ci 5162306a36Sopenharmony_ci enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>; 5262306a36Sopenharmony_ci vled-supply = <&vbatt>; 5362306a36Sopenharmony_ci ti,ovp-microvolt = <29000000>; 5462306a36Sopenharmony_ci 5562306a36Sopenharmony_ci led@0 { 5662306a36Sopenharmony_ci reg = <0>; 5762306a36Sopenharmony_ci function = LED_FUNCTION_BACKLIGHT; 5862306a36Sopenharmony_ci color = <LED_COLOR_ID_WHITE>; 5962306a36Sopenharmony_ci linux,default-trigger = "backlight"; 6062306a36Sopenharmony_ci led-max-microamp = <20000>; 6162306a36Sopenharmony_ci }; 6262306a36Sopenharmony_ci} 6362306a36Sopenharmony_ci 6462306a36Sopenharmony_ciFor more product information please see the link below: 6562306a36Sopenharmony_cihttps://www.ti.com/lit/ds/snvsa29/snvsa29.pdf 66