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dt-bindings: leds: backlight: apple,dwi-bl: Add Apple DWI backlight
Add backlight controllers attached via Apple DWI 2-wire interface. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: "Daniel Thompson (RISCstar)" <danielt@kernel.org> Signed-off-by: Nick Chan <towinchenmi@gmail.com> Reviewed-by: Neal Gompa <neal@gompa.dev> Link: https://lore.kernel.org/r/20250214040306.16312-2-towinchenmi@gmail.com Signed-off-by: Lee Jones <lee@kernel.org>
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/leds/backlight/apple,dwi-bl.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Apple DWI 2-Wire Interface Backlight Controller
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maintainers:
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- Nick Chan <towinchenmi@gmail.com>
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description:
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Apple SoCs contain a 2-wire interface called DWI. On some Apple iPhones,
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iPads and iPod touches with a LCD display, 1-2 backlight controllers
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are connected via DWI. Interfacing with DWI controls all backlight
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controllers at the same time. As such, the backlight controllers are
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treated as a single controller regardless of the underlying
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configuration.
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allOf:
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- $ref: common.yaml#
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properties:
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compatible:
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items:
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- enum:
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- apple,s5l8960x-dwi-bl
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- apple,t7000-dwi-bl
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- apple,s8000-dwi-bl
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- apple,t8010-dwi-bl
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- apple,t8015-dwi-bl
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- const: apple,dwi-bl
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reg:
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maxItems: 1
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power-domains:
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maxItems: 1
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required:
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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soc {
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#address-cells = <2>;
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#size-cells = <2>;
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dwi_bl: backlight@20e200010 {
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compatible = "apple,s5l8960x-dwi-bl", "apple,dwi-bl";
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reg = <0x2 0x0e200010 0x0 0x8>;
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power-domains = <&ps_dwi>;
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};
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};

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