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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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+
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+ title : Apple DWI 2-Wire Interface Backlight Controller
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+
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+ maintainers :
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+ - Nick Chan <towinchenmi@gmail.com>
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+
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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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+
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+ allOf :
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+ - $ref : common.yaml#
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+
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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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+
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+ reg :
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+ maxItems : 1
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+
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+ power-domains :
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+ maxItems : 1
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+
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+ required :
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+ - compatible
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+ - reg
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+
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+ unevaluatedProperties : false
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+
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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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+
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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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