| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/leds/ti.lm36922.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Texas Instruments - LM3692x Highly Efficient White LED Driver |
| |
| maintainers: |
| - Dan Murphy <dmurphy@ti.com> |
| |
| description: | |
| The LM3692x is an ultra-compact, highly efficient, |
| white-LED driver designed for LCD display backlighting. |
| |
| The main difference between the LM36922 and LM36923 is the number of |
| LED strings it supports. The LM36922 supports two strings while the LM36923 |
| supports three strings. |
| |
| For more product information please see the link below: |
| https://www.ti.com/lit/ds/snvsa29/snvsa29.pdf |
| |
| properties: |
| compatible: |
| enum: |
| - ti,lm36922 |
| - ti,lm36923 |
| |
| reg: |
| maxItems: 1 |
| |
| "#address-cells": |
| const: 1 |
| |
| "#size-cells": |
| const: 0 |
| |
| enable-gpios: |
| description: gpio pin to enable/disable the device. |
| |
| vled-supply: |
| description: LED supply |
| |
| ti,ovp-microvolt: |
| description: Overvoltage protection. |
| default: 29000000 |
| enum: [17000000, 21000000, 25000000, 29000000] |
| |
| patternProperties: |
| '^led@[0-3]$': |
| type: object |
| $ref: common.yaml |
| properties: |
| reg: |
| enum: [0, 1, 2, 3] |
| description: | |
| 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) |
| |
| unevaluatedProperties: false |
| |
| required: |
| - compatible |
| - reg |
| - "#address-cells" |
| - "#size-cells" |
| |
| allOf: |
| - if: |
| properties: |
| compatible: |
| contains: |
| const: ti,lm36922 |
| then: |
| properties: |
| led@3: false |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/gpio/gpio.h> |
| #include <dt-bindings/leds/common.h> |
| |
| i2c { |
| #address-cells = <1>; |
| #size-cells = <0>; |
| |
| led-controller@36 { |
| compatible = "ti,lm36922"; |
| 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>; |
| }; |
| }; |
| }; |
| |
