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Sun, 15 Nov 2026 00:58:38 -0800 (PST) Received: from xeon ([188.163.112.62]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c5095a5c4b7sm287613266b.1.2026.11.15.00.58.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 15 Nov 2026 00:58:37 -0800 (PST) From: Svyatoslav Ryhel To: Lee Jones , Pavel Machek , Griffin Kroah-Hartman , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Liam Girdwood , Mark Brown , Daniel Thompson , Jingoo Han , Svyatoslav Ryhel Cc: linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, mfd@lists.linux.dev, dri-devel@lists.freedesktop.org Subject: [PATCH v7 1/4] dt-bindings: leds: Document Skyworks AAT2870 Date: Sun, 15 Nov 2026 10:58:22 +0200 Message-ID: <20261115085826.89641-2-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20261115085826.89641-1-clamor95@gmail.com> References: <20261115085826.89641-1-clamor95@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document Skyworks AAT2870 LED Backlight Driver and Multiple LDO Lighting Management Unit. Reviewed-by: Daniel Thompson (RISCstar) # for backlight Reviewed-by: Rob Herring (Arm) Signed-off-by: Svyatoslav Ryhel --- .../bindings/leds/skyworks,aat2870.yaml | 124 ++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml diff --git a/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml b/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml new file mode 100644 index 0000000000000..3f3f3058af52d --- /dev/null +++ b/Documentation/devicetree/bindings/leds/skyworks,aat2870.yaml @@ -0,0 +1,124 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/skyworks,aat2870.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: AAT2870 LED Backlight Driver and Multiple LDO Lighting Management Unit + +maintainers: + - Svyatoslav Ryhel + +properties: + compatible: + const: skyworks,aat2870 + + reg: + maxItems: 1 + + enable-gpios: + description: GPIO connected to EN pin. + maxItems: 1 + + vin-supply: + description: Regulator providing power to the "IN" pin. + + backlight: + $ref: /schemas/leds/backlight/common.yaml# + unevaluatedProperties: false + + properties: + compatible: + const: skyworks,aat2870-backlight + + led-max-microamp: + minimum: 450 + maximum: 27900 + default: 27900 + + skyworks,channels: + description: layout of active channels, where each bit represents + one of 8 channels. + $ref: /schemas/types.yaml#/definitions/uint8 + default: 0xff + + required: + - compatible + + regulators: + type: object + additionalProperties: false + + properties: + compatible: + const: skyworks,aat2870-regulator + + in-ldo-supply: + description: Phandle to parent supply of regulators populated under + regulators node. They all share same parent. + + patternProperties: + "^ldo-(a|b|c|d)$": + $ref: /schemas/regulator/regulator.yaml# + unevaluatedProperties: false + + required: + - compatible + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + led-controller@60 { + compatible = "skyworks,aat2870"; + reg = <0x60>; + + enable-gpios = <&gpio 139 GPIO_ACTIVE_HIGH>; + vin-supply = <&vdd_3v3_vbat>; + + backlight { + compatible = "skyworks,aat2870-backlight"; + + skyworks,channels = /bits/ 8 <0xff>; + led-max-microamp = <27900>; + }; + + regulators { + compatible = "skyworks,aat2870-regulator"; + + in-ldo-supply = <&vdd_3v3_vbat>; + + ldo-a { + regulator-min-microvolt = <1200000>; + regulator-max-microvolt = <1200000>; + }; + + ldo-b { + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + regulator-always-on; + }; + + ldo-c { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <3300000>; + regulator-boot-on; + }; + + ldo-d { + regulator-min-microvolt = <2700000>; + regulator-max-microvolt = <2800000>; + }; + }; + }; + }; -- 2.53.0