[PATCH v14 1/2] dt-bindings: leds: Add new as3668 support
From: Lukas Timmermann <linux@timmermann.space>
Date: 2026-01-18 16:50:44
Also in:
linux-leds, lkml
Subsystem:
as3668 led driver, led subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Lukas Timmermann, Lee Jones, Pavel Machek, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The bindings are incomplete, as the GPIO/Audio Input pin is still undocumented. The hardware used for testing this patch series does not allow modification, so the mentioned pin has been omitted. Signed-off-by: Lukas Timmermann <linux@timmermann.space> Reviewed-by: Krzysztof Kozlowski <redacted> --- .../devicetree/bindings/leds/ams,as3668.yaml | 74 +++++++++++++++++++ MAINTAINERS | 6 ++ 2 files changed, 80 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/ams,as3668.yaml
diff --git a/Documentation/devicetree/bindings/leds/ams,as3668.yaml b/Documentation/devicetree/bindings/leds/ams,as3668.yaml
new file mode 100644
index 000000000000..d1d73782da55
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/ams,as3668.yaml@@ -0,0 +1,74 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/ams,as3668.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Osram 4-channel i2c LED driver + +maintainers: + - Lukas Timmermann <linux@timmermann.space> + +description: + This IC can drive up to four separate LEDs. + Having four channels suggests it could be used with a single RGBW LED. + +properties: + compatible: + const: ams,as3668 + + reg: + maxItems: 1 + + "#address-cells": + const: 1 + + "#size-cells": + const: 0 + +patternProperties: + "^led@[0-3]$": + type: object + $ref: common.yaml# + unevaluatedProperties: false + + properties: + reg: + maxItems: 1 + +required: + - compatible + - reg + - "#address-cells" + - "#size-cells" + +additionalProperties: false + +examples: + - | + #include <dt-bindings/leds/common.h> + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@42 { + compatible = "ams,as3668"; + reg = <0x42>; + #address-cells = <1>; + #size-cells = <0>; + + led@0 { + reg = <0x0>; + function = LED_FUNCTION_STATUS; + color = <LED_COLOR_ID_RED>; + }; + + led@1 { + reg = <0x1>; + function = LED_FUNCTION_STATUS; + color = <LED_COLOR_ID_GREEN>; + }; + }; + }; +
diff --git a/MAINTAINERS b/MAINTAINERS
index c59316109e3f..091206c54c63 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -3506,6 +3506,12 @@ L: linux-leds@vger.kernel.org S: Maintained F: drivers/leds/flash/leds-as3645a.c +AS3668 LED DRIVER +M: Lukas Timmermann <linux@timmermann.space> +L: linux-leds@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/leds/ams,as3668.yaml + ASAHI KASEI AK7375 LENS VOICE COIL DRIVER M: Tianshu Qiu <tian.shu.qiu@intel.com> L: linux-media@vger.kernel.org
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2.52.0