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Additional change - Add ref to common.yaml for child node - Add i2c node at example Fix below warning: arch/arm64/boot/dts/freescale/imx8mq-librem5-r2.dtb: /soc@0/bus@30800000/i2c@30a40000/backlight@36: failed to match any schema with compatible: ['ti,lm36922'] Signed-off-by: Frank Li --- Change from v1 to v2 - fix dtschema/dtc warnings/errors: Documentation/devicetree/bindings/leds/ti.lm36922.example.dtb: /example-0/i2c/led-controller@36: failed to match any schema with compatible: ['ti,lm3692x'] --- .../devicetree/bindings/leds/leds-lm3692x.txt | 65 ------------ .../devicetree/bindings/leds/ti.lm36922.yaml | 100 ++++++++++++++++++ 2 files changed, 100 insertions(+), 65 deletions(-) delete mode 100644 Documentation/devicetree/bindings/leds/leds-lm3692x.txt create mode 100644 Documentation/devicetree/bindings/leds/ti.lm36922.yaml diff --git a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt b/Documentation/devicetree/bindings/leds/leds-lm3692x.txt deleted file mode 100644 index b1103d961d6ca..0000000000000 --- a/Documentation/devicetree/bindings/leds/leds-lm3692x.txt +++ /dev/null @@ -1,65 +0,0 @@ -* 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 - -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 = ; - 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 diff --git a/Documentation/devicetree/bindings/leds/ti.lm36922.yaml b/Documentation/devicetree/bindings/leds/ti.lm36922.yaml new file mode 100644 index 0000000000000..ac98547b78bd2 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/ti.lm36922.yaml @@ -0,0 +1,100 @@ +# 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 + +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@[0-9a-f]+$': + 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" + +additionalProperties: false + +examples: + - | + #include + #include + + 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 = ; + linux,default-trigger = "backlight"; + led-max-microamp = <20000>; + }; + }; + }; +