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Mon, 18 May 2026 02:59:34 -0700 (PDT) From: Svyatoslav Ryhel To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Dmitry Torokhov , Lee Jones , Pavel Machek , Sebastian Reichel , Svyatoslav Ryhel , Ion Agorria , =?UTF-8?q?Micha=C5=82=20Miros=C5=82aw?= Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v7 1/7] dt-bindings: embedded-controller: document ASUS Transformer EC Date: Mon, 18 May 2026 12:59:01 +0300 Message-ID: <20260518095907.36158-2-clamor95@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260518095907.36158-1-clamor95@gmail.com> References: <20260518095907.36158-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document embedded controller used in ASUS Transformer device series. Signed-off-by: Svyatoslav Ryhel Reviewed-by: Rob Herring (Arm) --- .../asus,tf201-ec-pad.yaml | 119 ++++++++++++++++++ 1 file changed, 119 insertions(+) create mode 100644 Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml diff --git a/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml b/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml new file mode 100644 index 000000000000..60b6375864aa --- /dev/null +++ b/Documentation/devicetree/bindings/embedded-controller/asus,tf201-ec-pad.yaml @@ -0,0 +1,119 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/embedded-controller/asus,tf201-ec-pad.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ASUS Transformer's Embedded Controller + +description: + Several Nuvoton based Embedded Controllers attached to an I2C bus, + running a custom ASUS firmware, specific to the ASUS Transformer + device series. + +maintainers: + - Svyatoslav Ryhel + +properties: + compatible: + description: + The 'pad' suffix is used for the controller within the tablet, while + the 'dock' suffix refers to the controller in the mobile dock keyboard. + oneOf: + - enum: + - asus,sl101-ec-dock + - asus,tf101-ec-dock + - asus,tf201-ec-pad + - asus,tf600t-ec-dock + - asus,tf600t-ec-pad + + - items: + - enum: + - asus,tf101g-ec-dock + - asus,tf201-ec-dock + - asus,tf300t-ec-dock + - asus,tf300tg-ec-dock + - asus,tf300tl-ec-dock + - asus,tf700t-ec-dock + - const: asus,tf101-ec-dock + + - items: + - enum: + - asus,tf300t-ec-pad + - asus,tf300tg-ec-pad + - asus,tf300tl-ec-pad + - asus,tf700t-ec-pad + - const: asus,tf201-ec-pad + + - items: + - enum: + - asus,tf701t-ec-dock + - const: asus,tf600t-ec-dock + + - items: + - enum: + - asus,p1801-t-ec-pad + - asus,tf701t-ec-pad + - const: asus,tf600t-ec-pad + + reg: + description: + The ASUS Transformer EC has a main I2C address and an associated + DockRAM device, which provides power-related functions for the + embedded controller. Both addresses are required for operation. + minItems: 2 + + reg-names: + items: + - const: ec + - const: dockram + + interrupts: + maxItems: 1 + + request-gpios: + maxItems: 1 + +required: + - compatible + - reg + - reg-names + +allOf: + - $ref: /schemas/power/supply/power-supply.yaml + - if: + properties: + compatible: + not: + contains: + const: asus,tf600t-ec-dock + then: + required: + - interrupts + - request-gpios + +unevaluatedProperties: false + +examples: + - | + #include + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + embedded-controller@19 { + compatible = "asus,tf201-ec-dock", "asus,tf101-ec-dock"; + reg = <0x19>, <0x1b>; + reg-names = "ec", "dockram"; + + interrupt-parent = <&gpio>; + interrupts = <151 IRQ_TYPE_LEVEL_LOW>; + + request-gpios = <&gpio 134 GPIO_ACTIVE_LOW>; + + monitored-battery = <&dock_battery>; + }; + }; +... -- 2.51.0