[PATCH v3 1/4] dt-bindings: backlight: Add max25014 bindings
From: Maud Spierings via B4 Relay <devnull+maudspierings.gocontroll.com@kernel.org>
Date: 2025-09-11 07:53:28
Also in:
b4-sent, dri-devel, imx, linux-arm-kernel, linux-devicetree, linux-leds, lkml
Subsystem:
led subsystem, max25014 backlight driver, open firmware and flattened device tree bindings, the rest · Maintainers:
Lee Jones, Pavel Machek, Maud Spierings, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Maud Spierings <maudspierings@gocontroll.com> The Maxim MAX25014 is a 4-channel automotive grade backlight driver IC with integrated boost controller. Signed-off-by: Maud Spierings <maudspierings@gocontroll.com> --- .../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 <maudspierings@gocontroll.com> + +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. + + 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 + +required: + - compatible + - reg + - maxim,strings + +unevaluatedProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + #include <dt-bindings/interrupt-controller/irq.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + backlight@6f { + compatible = "maxim,max25014"; + reg = <0x6f>; + default-brightness = <50>; + enable-gpios = <&gpio1 4 GPIO_ACTIVE_HIGH>; + interrupt-parent = <&gpio1>; + interrupts = <2 IRQ_TYPE_EDGE_FALLING>; + power-supply = <®_backlight>; + pwms = <&pwm1>; + maxim,iset = <7>; + maxim,strings = <1 1 1 1>; + }; + }; +
diff --git a/MAINTAINERS b/MAINTAINERS
index 7b7396ed28a700a2aab318553ce8ba1788312bff..5a592eefbe7562734aada05ab9e3aea8cee010e7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -15069,6 +15069,11 @@ F: Documentation/userspace-api/media/drivers/max2175.rst F: drivers/media/i2c/max2175* F: include/uapi/linux/max2175.h +MAX25014 BACKLIGHT DRIVER +M: Maud Spierings <maudspierings@gocontroll.com> +S: Maintained +F: Documentation/devicetree/bindings/leds/backlight/maxim,max25014.yaml + MAX31335 RTC DRIVER M: Antoniu Miclaus <antoniu.miclaus@analog.com> L: linux-rtc@vger.kernel.org
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2.51.0