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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
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treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/leds/leds-lm3692x.txt
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+* 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