On Tue, Dec 02, 2025 at 08:46:21AM +0100, Maud Spierings wrote: > On 12/1/25 17:52, Frank Li wrote: > > On Mon, Dec 01, 2025 at 12:53:20PM +0100, Maud Spierings via B4 Relay wrote: > > > From: Maud Spierings <[email protected]> > > > > > > The Maxim MAX25014 is a 4-channel automotive grade backlight driver IC > > > with integrated boost controller. > > > > > > Signed-off-by: Maud Spierings <[email protected]> > > > > > > --- > > > > > > In the current implementation the control registers for channel 1, > > > control all channels. So only one led subnode with led-sources is > > > supported right now. If at some point the driver functionality is > > > expanded the bindings can be easily extended with it. > > > --- > > > .../bindings/leds/backlight/maxim,max25014.yaml | 107 > > > +++++++++++++++++++++ > > > MAINTAINERS | 5 + > > > 2 files changed, 112 insertions(+) > > > > > > diff --git > > > a/Documentation/devicetree/bindings/leds/backlight/maxim,max25014.yaml > > > b/Documentation/devicetree/bindings/leds/backlight/maxim,max25014.yaml > > > new file mode 100644 > > > index 000000000000..e83723224b07 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/leds/backlight/maxim,max25014.yaml > > > @@ -0,0 +1,107 @@ > > > +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) > > > +%YAML 1.2 > > > +--- > > > +$id: http://devicetree.org/schemas/leds/backlight/maxim,max25014.yaml# > > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > > + > > > +title: Maxim max25014 backlight controller > > > + > > > +maintainers: > > > + - Maud Spierings <[email protected]> > > > + > > > +properties: > > > + compatible: > > > + enum: > > > + - maxim,max25014 > > > + > > > + reg: > > > + maxItems: 1 > > > + > > > + "#address-cells": > > > + const: 1 > > > + > > > + "#size-cells": > > > + const: 0 > > > + > > > + enable-gpios: > > > + maxItems: 1 > > > + > > > + interrupts: > > > + maxItems: 1 > > > + > > > + power-supply: > > > + description: Regulator which controls the boost converter input rail. > > > + > > > + pwms: > > > + maxItems: 1 > > > + > > > + maxim,iset: > > > + $ref: /schemas/types.yaml#/definitions/uint32 > > > + maximum: 15 > > > + default: 11 > > > + description: > > > + Value of the ISET field in the ISET register. This controls the > > > current > > > + scale of the outputs, a higher number means more current. > > > + > > > + led@0: > > > > define whole binding, allow 0-3. binding is not related with driver's > > implement. > > > > it'd better put unders leds. > > > > so like: > > backlight: backlight@6f { > compatible = "maxim,max25014"; > reg = <0x6f>; > enable-gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>; > pinctrl-names = "default"; > pinctrl-0 = <&pinctrl_backlight>; > maxim,iset = <7>; > > leds { > #address-cells = <1>; > #size-cells = <0>; > > led@0 { > reg = <0>; > led-sources = <0 1 2>; > default-brightness = <50>; > }; > > optional led@#.... > }; > }; > > right?
yes. > > Kind regards, > Maud > > > > > > + type: object > > > + description: Properties for a string of connected LEDs. > > > + $ref: common.yaml# > > > + > > > + properties: > > > + reg: > > > + const: 0 > > > + > > > + led-sources: > > > + allOf: > > > + - minItems: 1 > > > + maxItems: 4 > > > + items: > > > + minimum: 0 > > > + maximum: 3 > > > + default: [0, 1, 2, 3] > > > + > > > + default-brightness: > > > + minimum: 0 > > > + maximum: 100 > > > + default: 50 > > > + > > > + required: > > > + - reg > > > + > > > + additionalProperties: false > > > > unevaluatedProperties: false because ref to common.yaml > > > > Frank > > > >
