66 lines
1.8 KiB
Plaintext
66 lines
1.8 KiB
Plaintext
* 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
|