From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm2-f13.google.com (mail-wm2-f13.google.com [74.125.225.141]) (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 8FE8C421245 for ; Tue, 22 Sep 2026 16:57:49 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.225.141 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790096271; cv=none; b=MTDCHxJ6NKWiPGSkC0Tazbsx/FkJJe8YY185I1e8CZnEt+FVNQYB4C/B+Fic8V+OKKndnbY34Kvnsm/0+zqGz461NS9y9mprDHjj91TD9oOFr0Lutls7Zjcw10p9gXP4S7oJJIbc+m6HhKhnrUOaIBKzCcrYs9TNC37QJxZwBzo= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790096271; c=relaxed/simple; bh=aid97Yjimc76nz+M6o0QWk1KtiDp95Qtk/akmNNnZ3Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=UqsqAcCSh3f5u44ibcRco9hgAwzb+/jYLOEC5vp+gcRa4xAbqUwMvmwEgagSWkmwM8sYWC/xx3zh25j5wMfIhY1sds2Eu3iNxzALnbmkOUp0BL6yrkwKd/lFIW+/ZZQjdMWxg+5YkcIXO4QG9lgJGmUSZ7t2+rje0tt7QQxDYAQ= 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=b7MlO8GL; arc=none smtp.client-ip=74.125.225.141 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="b7MlO8GL" Received: by mail-wm2-f13.google.com with SMTP id 5b1f17b1804b1-49ccfd61ecaso38955985e9.3 for ; Tue, 22 Sep 2026 09:57:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790096268; x=1790701068; 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=Qdwj3z7uTqgFd/9Tfs5y2p+1zT+FzwY0f8o+/81CJMs=; b=b7MlO8GLMCViwPcId7mm4Ioo2dqkBXcWt9Q/mxK1t+h0RkhUDQR3ZCtTMHiP6ORKqA r+mbYqcRTIy2eAZYNBHDzTa5OORT2inB3NsQbIVEb40CkTtML64Kjp1bHkfiROIgMbjr pvV9EKpfpC/x75de7w86rxcOoQHN8YTweBqL9Zurk+VeqMiwJ0G3nWX/rzLvZJCDzkRR 5dBfbox/zL1JaJVrzD/QKscyTTZxqRrPu88UvTA9SYDl1gwed5BDNo2tP4p6JQ44pemp uazuvCnIpiry0ggzr0y2lea8PKDZxYZ6ilBwu6mF3m1pWxlygNoiV0Z2sGIGtskK3WBP frDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790096268; x=1790701068; 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=Qdwj3z7uTqgFd/9Tfs5y2p+1zT+FzwY0f8o+/81CJMs=; b=EK74aLvX5Z2LBmEIzjN2IvBU9d9I9pGG6MQYScZzy3NFI4qnPOoFa+tJjT/0ZVj1I/ F8n7t8WaL09qrklaFV5iUZF0PPgzSaGbLAOJnkeyNK91/Xa4C2FG0yJBBF25K58sgLhh RRK/AKbsJdZ47z5NnMeF8MtSm/cIHCh+jLvNjo3gXnCDvAohr+mH3Zi9t3t2XNVpdUSb CjGU8jrCSq/SPezqPfrb5ChBVxNlYnTIZ8Bfuhjt6WrpY8X5IXbxmdO+EnWQ8t8Dfux9 MdsdArG+c6LfwYUPIDhY4FEbwEA0lsldNgWJFnhojoyBZvo6ozyqixVn4a2PzMVSdtxA p6zQ== X-Forwarded-Encrypted: i=1; AKwUvBy0jk7ASFop1zHz27a22K1pY7UNMRKbbwk92Vfj/a1v8prwH1G49AQWLtqVav7pUGx9HGuoFtjYW48XlMg=@vger.kernel.org X-Gm-Message-State: AFuF++mWc1OC7y7MYPG0hqMm1KOdBP9o948OAcTua9/XHBSh2FgJgNMl 8FzBtVMpsoq6g/veXYgAcRIhGX5XrM751Au7bSEaczMH1zPISyzfKIHm X-Gm-Gg: AYBFou25c29y6vQb4g7NhkXZKqBSduZaJefGLz26BCLOJvXLKs8kAWd5+OG+qDySQlj d0u1TTofN+DAzAgJ1OFfaHzFqd9yB2/dteuArOKR1zFpBiCogAW+NTazj/LYbPcDrYEO87bpuZo KiF7rqyjOWcI/KXdD7R6v9wmvufh5xPsMsbSGCf82du62TICFzMmCZjI7ETSN91xTSO34NDwJP2 00SKzpi5QHp/p0Xpf/WjCnUoDWkEM4C3Nx699/XVw6LdTofgKGqxKA62z7DTcUUUzgT/CqXXZmt NIdMyt/TqrzNFZ8IJvlL0hrMIT/si/peQoYjv1FOiOsj3s2O8YB9kq2D7UDF/ue4ggwSij+7j23 qa2MSkD0ef7yLU0mHjIF9JkbOTiWDjpmUGdkB285aWpMrRKLByuIIhxc1Lp5Mr8/9edjuFZlfEa bhi6EZzJT4jsc2I0O/5JUzVf8sMJ/2Yfrg0joN7byRIIM7RVqc27iLj4IRianLXWWixhS2Wp/g+ t7hDyyNHx9bLlklYw== X-Received: by 2002:a05:600c:19cb:b0:49e:8184:f619 with SMTP id 5b1f17b1804b1-49fc57410f2mr206302025e9.22.1790096267744; Tue, 22 Sep 2026 09:57:47 -0700 (PDT) Received: from localhost.localdomain ([94.252.75.113]) by smtp.googlemail.com with ESMTPSA id 5b1f17b1804b1-49fdabe8a2asm68693625e9.4.2026.09.22.09.57.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 09:57:47 -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 , Bjorn Andersson , Konrad Dybcio , Abel Vesa 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, Conor Dooley Subject: [PATCH v4 1/3] dt-bindings: embedded-controller: add Lenovo Yoga Slim 7x Gen 11 EC Date: Tue, 22 Sep 2026 18:57:35 +0200 Message-ID: <20260922165737.260443-2-okerixx@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260922165737.260443-1-okerixx@gmail.com> References: <20260922165737.260443-1-okerixx@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 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 Acked-by: Conor Dooley --- .../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 be096be5fff6..11d459c17caf 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14966,6 +14966,14 @@ 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