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On 9/11/25 17:33, Frank Li wrote: > On Thu, Sep 11, 2025 at 09:53:18AM +0200, Maud Spierings via B4 Relay wrote: >> From: Maud Spierings >> >> The Maxim MAX25014 is a 4-channel automotive grade backlight driver IC >> with integrated boost controller. >> >> Signed-off-by: Maud Spierings >> --- >> .../bindings/leds/backlight/maxim,max25014.yaml | 81 ++++++++++++++++++++++ >> MAINTAINERS | 5 ++ >> 2 files changed, 86 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 0000000000000000000000000000000000000000..e113a2ad16aa74f982b9c2ea80578aed2d9424fe >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/leds/backlight/maxim,max25014.yaml >> @@ -0,0 +1,81 @@ >> +# 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 >> + >> +allOf: >> + - $ref: common.yaml# >> + >> +properties: >> + compatible: >> + enum: >> + - maxim,max25014 >> + >> + reg: >> + maxItems: 1 >> + >> + 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 register field. This controls the current scale of the >> + outputs, a higher number means more current. > > Use standard unit. Do not use register value directly. It is unfortunately not just a value in Amps, it depends on the hardware design. There is a kind of "default" table with a 49.9K resistor, but depending on that resistor the current is different. >> + >> + maxim,strings: >> + $ref: /schemas/types.yaml#/definitions/uint32-array >> + description: >> + A 4-bit bitfield that describes which led strings to turn on. >> + minItems: 4 >> + maxItems: 4 >> + items: >> + maximum: 1 > > led should have standard interface. > > check Documentation/devicetree/bindings/leds/common.yaml Thanks I will investigate, that may indeed be a better abstraction. Kind regards, Maud