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([43.134.26.72]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-296509682casm101941215ad.22.2025.11.08.19.22.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Nov 2025 19:22:56 -0800 (PST) From: Junjie Cao To: Lee Jones , Daniel Thompson , Jingoo Han , Pavel Machek , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Helge Deller Cc: dri-devel@lists.freedesktop.org, linux-leds@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fbdev@vger.kernel.org, Junjie Cao Subject: [PATCH v3 1/2] dt-bindings: leds: backlight: Add Awinic AW99706 backlight Date: Sun, 9 Nov 2025 11:22:39 +0800 Message-ID: <20251109032240.3422503-2-caojunjie650@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251109032240.3422503-1-caojunjie650@gmail.com> References: <20251109032240.3422503-1-caojunjie650@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add Awinic AW99706 backlight binding documentation. Signed-off-by: Junjie Cao --- Changes in v3: - breaking a long line (Krzysztof) - rename backlight node (Krzysztof) - Link to v2: https://lore.kernel.org/linux-leds/20251103110648.878325-2-caojunjie650@gmail.com Changes in v2: - use proper units for properties (Krzysztof) - drop non-fixed properties (Krzysztof) - add properties(max-brightness, default-brightness) (Krzysztof) - Link to v1: https://lore.kernel.org/linux-leds/20251026123923.1531727-2-caojunjie650@gmail.com .../leds/backlight/awinic,aw99706.yaml | 101 ++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 Documentation/devicetree/bindings/leds/backlight/awinic,aw99706.yaml diff --git a/Documentation/devicetree/bindings/leds/backlight/awinic,aw99706.yaml b/Documentation/devicetree/bindings/leds/backlight/awinic,aw99706.yaml new file mode 100644 index 000000000..f48ce7a34 --- /dev/null +++ b/Documentation/devicetree/bindings/leds/backlight/awinic,aw99706.yaml @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/leds/backlight/awinic,aw99706.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Awinic AW99706 6-channel WLED Backlight Driver + +maintainers: + - Junjie Cao + +allOf: + - $ref: common.yaml# + +properties: + compatible: + const: awinic,aw99706 + + reg: + maxItems: 1 + + enable-gpios: + description: GPIO to use to enable/disable the backlight (HWEN pin). + maxItems: 1 + + awinic,dim-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + description: > + Select dimming mode of the device. + 0 = Bypass mode. + 1 = DC mode. + 2 = MIX mode(PWM at low brightness and DC at high brightness). + 3 = MIX-26k mode(MIX mode with different PWM frequency). + enum: [ 0, 1, 2, 3 ] + default: 1 + + awinic,sw-freq-hz: + description: Boost switching frequency in Hz. + enum: [ 300000, 400000, 500000, 600000, 660000, 750000, 850000, 1000000, + 1200000, 1330000, 1500000, 1700000 ] + default: 750000 + + awinic,sw-ilmt-microamp: + description: Switching current limitation in uA. + enum: [ 1500000, 2000000, 2500000, 3000000 ] + default: 3000000 + + awinic,iled-max-microamp: + description: Maximum LED current setting in uA. + minimum: 5000 + maximum: 50000 + multipleOf: 500 + default: 20000 + + awinic,uvlo-thres-microvolt: + description: UVLO(Under Voltage Lock Out) in uV. + enum: [ 2200000, 5000000 ] + default: 2200000 + + awinic,ramp-ctl: + $ref: /schemas/types.yaml#/definitions/uint32 + description: > + Select ramp control and filter of the device. + 0 = Fade in/fade out. + 1 = Light filter. + 2 = Medium filter. + 3 = Heavy filter. + enum: [ 0, 1, 2, 3 ] + default: 2 + +required: + - compatible + - reg + - enable-gpios + +unevaluatedProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + backlight@76 { + compatible = "awinic,aw99706"; + reg = <0x76>; + enable-gpios = <&tlmm 88 GPIO_ACTIVE_HIGH>; + default-brightness = <2047>; + max-brightness = <4095>; + awinic,dim-mode = <1>; + awinic,sw-freq-hz = <750000>; + awinic,sw-ilmt-microamp = <3000000>; + awinic,uvlo-thres-microvolt = <2200000>; + awinic,iled-max-microamp = <20000>; + awinic,ramp-ctl = <2>; + }; + }; + +... -- 2.51.1.dirty