From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wr1-f46.google.com (mail-wr1-f46.google.com [209.85.221.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 324624FECEF for ; Tue, 8 Sep 2026 09:18:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788859139; cv=none; b=tvrsGnG7Cyn6efnMUgqrcT1bjF9Gp3PbqZlaqLzqk8GQmxeYF7Zzmc8fXXwSc56S9yaMOHGJ3oLpJ4Sw5blSvbWFdy7ZoZzBo613irm2oI5+3sUTFvBK4gOzC4th4NQAtAycJdY0vMBWa8NdcdPNUPX1yLMxY19NYlDKJ78Cfjw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788859139; c=relaxed/simple; bh=f8uHZpfRl4v8AUtS53bPhxc4vthZX6W8U9P1WRFUNx0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LJz6iUvbLgqelgyXInnjA9W0htvqAPa9tued2loWJoS/xRQm1deokjH5fS3YPZaPRdmfxxVSKaEtqxCmkK6HxQ1yQ95hLJEWvOtHB2SL1/t1dO28MrDy66XrCmPuFCOuYyYgYJcPIPyxoLqiLgWgOpX/zmUE1QpZSVP5UhwPK+w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=OfK7SkI6; arc=none smtp.client-ip=209.85.221.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="OfK7SkI6" Received: by mail-wr1-f46.google.com with SMTP id ffacd0b85a97d-484392e3d33so3115783f8f.2 for ; Tue, 08 Sep 2026 02:18:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788859134; x=1789463934; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=RBs47LjvcqFa12yXVqhhMacXUU5EOaptYJ05VFD/yFg=; b=OfK7SkI61VRC0ejxUBEWkW6ctgoAisu6hwL5X8kNm823fZ1IW0sJFSfJyzBl713W6t G0lmZEwIdl0eBV4IXz6iNBd6JKOU5g1c6KI2UPrWbKKfVUVheL0V1wWJzxA6JNai+ey0 TYn7GqIk5kqVj3N0Vfeb9C6Zal4NoOYLW71oyr2IXxdWTv+8VPCKNmO4q48+2h06SO8E QJWykhuwXEw5Ba5NZ7mpQ7rMuG+y/K1XUFx3/kHEH0Gd4YSSfwC3c1lai8QoSuFkODvW CNfJoMM0RwPIIu8r7bVmeshkEFTBr9QLTNdl5T2rdW6cnMGP5lgmPXJ8oCMaotDBJC+g pyMA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788859134; x=1789463934; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=RBs47LjvcqFa12yXVqhhMacXUU5EOaptYJ05VFD/yFg=; b=WAdPIfSeBGA81MmZGFcnbSecAHS8drH2HceWK5QvwORlv4StghAXswaMj1VoKQ1F7K iJ//p/m7jqTtv6YXzpznR/pxz2tMmJ6tVBMOGC8P9iDAiGxHQ5dR3Ad+CFT2AOzsKy+l My2LnYtYpfZtIsIsLQbfp0F1YqgVFAMLSutKA9MQywG1nDe3CMWyEsAc2N/iR38MXSRI QY+xULoFQ6bju5e5P3mu8MhM87gEtCQ+kifx81Q2DkbXl26W6TUw83CczGufWWJW7JFI ZQWhRjxgL75d0De2vyH0gzAICyaaLLm/4xRP3kKCt+WE2WwdMUT0seqjr0wvuA8etN7y Gslw== X-Forwarded-Encrypted: i=1; AKwUvBzubxK5hsjbWpbi/ztYnBGAS1FnQJdfQiucfYvY8qAREkPFFmHNGyq0L6nKuNrZo1ek+WB8N79TLT/mOA==@vger.kernel.org X-Gm-Message-State: AFuF++m7K2c0qcYp5Fae95L8gDSZeCwQfMxEmerYFn0FsTlB2pL/MYba dxIbL1aQgbqnTXaL6j7IBpiceg7OAS0fFl8Hvqwy3GdWt3N4zU2x51RE X-Gm-Gg: AYBFou1TByZfLHhr1l+dq0xMEo0XZFc7swDx/YaHl0yRLgqxPw6EE1hRudEPtGaQJQj aVLYF68aSaRKbhN737OtXaOU6dcjaRDklQpjV/mkbbCd7yxuCo9zyKFJVg9Lxnxj8Iy4Opzf0NI /LI3Gl4PvI/9CNyhXe1ND+y0MK+/gLSaFMCa7PILo88d7VeXfwTPWhtPc4JHOb7A35WuSvBauAk XDbm6NalLlMAaftorILZUt/ipCG7Mt5bfmjCBaVxbyzl3dEQLVw1XPPoN9i2p4leRuRqwoJcoZZ AqAQqmhcs/btEWCnxexzHnOorqXnEV/RVAqOTaE+E2MhWc52PnkhCytcUkhhR9sileQVwQyx1e0 KPuKnXzO6M8OUh+vsY6OVf3y2gKIGGNRbb7/g3pTzN9vJBjweJsXy0copIafftEZT6HZ7CFS18z lF/D6SzMdTbmzUspYruP8imJm/U7N8h96OQT1Cayh5mGLKkc9xrrJd8KeOEg1otxjHRlSOClwC+ 7RccTDyq6M1e9S3efk+rzI094kI0MUi6A== X-Received: by 2002:a05:600c:5493:b0:49b:8f18:714a with SMTP id 5b1f17b1804b1-49cf824a6c5mr291161125e9.12.1788859134252; Tue, 08 Sep 2026 02:18:54 -0700 (PDT) Received: from localhost.localdomain (mob-31-26-103-238.net.vodafone.it. [31.26.103.238]) by smtp.googlemail.com with ESMTPSA id ffacd0b85a97d-48588135600sm30514063f8f.2.2026.09.08.02.18.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Sep 2026 02:18:53 -0700 (PDT) From: Oleg Keri To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Hans de Goede , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , "Bryan O'Donoghue" , Guenter Roeck Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-hwmon@vger.kernel.org Subject: [PATCH 1/2] dt-bindings: embedded-controller: add Lenovo Yoga Slim 7x Gen 11 EC Date: Tue, 8 Sep 2026 11:17:51 +0200 Message-ID: <20260908091752.5508-2-okerixx@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260908091752.5508-1-okerixx@gmail.com> References: <20260908091752.5508-1-okerixx@gmail.com> Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Document the Compal embedded controller found on the Lenovo Yoga Slim 7x Gen 11, a Qualcomm Snapdragon X2 Elite (glymur) laptop. It sits on I2C at address 0x70 and is distinct from the Qualcomm reference EC that the reference designs place at 0x76. Signed-off-by: Oleg Keri --- .../lenovo,yoga-slim7x-gen11-ec.yaml | 56 +++++++++++++++++++ MAINTAINERS | 8 +++ 2 files changed, 64 insertions(+) create mode 100644 Documentation/devicetree/bindings/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml diff --git a/Documentation/devicetree/bindings/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml b/Documentation/devicetree/bindings/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml new file mode 100644 index 000000000000..37337de86b0b --- /dev/null +++ b/Documentation/devicetree/bindings/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml @@ -0,0 +1,56 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Lenovo Yoga Slim 7x Gen 11 Embedded Controller + +maintainers: + - Oleg Keri + +description: + The Lenovo Yoga Slim 7x Gen 11, a Qualcomm Snapdragon X2 Elite (glymur) + laptop, has a Compal embedded controller on I2C. It reports board + thermistors, battery cell voltages and CPU fan speed, and drives the + keyboard backlight. + + This controller is not the Qualcomm reference EC that the Snapdragon + reference designs place at address 0x76; it speaks a different command + set and answers at 0x70. + +properties: + compatible: + const: lenovo,yoga-slim7x-gen11-ec + + reg: + const: 0x70 + + interrupts: + maxItems: 1 + description: + The controller pulses this line while it has events queued. + +required: + - compatible + - reg + - interrupts + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells = <1>; + #size-cells = <0>; + + embedded-controller@70 { + compatible = "lenovo,yoga-slim7x-gen11-ec"; + reg = <0x70>; + + interrupts-extended = <&tlmm 66 IRQ_TYPE_EDGE_FALLING>; + }; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 38612eca2987..e35679264e22 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14882,6 +14882,14 @@ S: Maintained F: Documentation/ABI/testing/sysfs-driver-lenovo-yb9-kbdock F: drivers/platform/x86/lenovo/yb9-kbdock.c +LENOVO YOGA SLIM 7X GEN 11 EMBEDDED CONTROLLER DRIVER +M: Oleg Keri +L: linux-arm-msm@vger.kernel.org +S: Maintained +F: Documentation/ABI/testing/sysfs-driver-lenovo-yoga-slim7x-gen11-ec +F: Documentation/devicetree/bindings/embedded-controller/lenovo,yoga-slim7x-gen11-ec.yaml +F: drivers/platform/arm64/lenovo-yoga-slim7x-gen11-ec.c + LETSKETCH HID TABLET DRIVER M: Hans de Goede L: linux-input@vger.kernel.org -- 2.55.0