From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f201.google.com (mail-pl1-f201.google.com [209.85.214.201]) (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 A1AE02D8365 for ; Wed, 1 Oct 2025 19:33:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759347238; cv=none; b=c/nybD0ubiLnsZcw1PNqeMeItnf2qx+H9o+nSW7/qDgyWOUTXA2fn5lS3ZcoiIEiuTL/Hc6hfAvzBfm9sDAE+DQTN7OixgO/Piu1JPnLlgxmCmKvvP+uJJpZkSnmPnw096OP//IO8rSy7Xr5tcXxn6Li9Rp3rR7Na2jOF/53LuQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1759347238; c=relaxed/simple; bh=FEpg/7BZxeu5NgwiYBv2Ee+RYqZ1LN0sPgk+srr05OA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=fxMCrdIUeWXgmM72vjqCByTH/ym+X2LlH11q9eV5jDzl7ch0vZGbApYgtfZ6mRcst0WQNqNP1AtVw0sdnlVB+BHF/8lAxGYKT09roz6qdIszTYbruR171+YJcxVk1KSvyb/sGRiw4bBKypse6kFV6EdJFM8boSBFAVPywoVLpL4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=007Dx6ib; arc=none smtp.client-ip=209.85.214.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--jthies.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="007Dx6ib" Received: by mail-pl1-f201.google.com with SMTP id d9443c01a7336-2681623f927so1253735ad.0 for ; Wed, 01 Oct 2025 12:33:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1759347235; x=1759952035; darn=lists.linux.dev; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:from:to:cc:subject:date:message-id :reply-to; bh=KOZcKUaQjl52TKTb2c8zMCvsKmsV/y/lPeyOuQ6q8ow=; b=007Dx6ibnk4XmI/d+VYkSvn9n3hY2arFwo+JuPZhBN94z3p5yGaSCD3vjoYjZ4LTMM n6OtDS+8MzIhJHcPqWsnFJXQEtBsik/JM8Ba3wmNS5Jfl1dFvgXObVO6Ezt23/8M6R9D W8Zii4n67neaHkSB5VPAhf+V3lY5O2eJmIbRweQcXnvzwhfh1eOxU/3gxK6HXaKo8kd7 X8ac6RKQa93O7czFXnG2FTKEhiRH+hApp/LcRgB9eRdi+NV0eRDyq/M20sRC+aPlTf+x mOK38PPJsWrps2sy3UTt+IbAlKoG4eOSttxXFc6C5HnT62s6rOfAQePgGlfGvuy5uVcp YWkw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1759347235; x=1759952035; h=content-transfer-encoding:cc:to:from:subject:message-id:references :mime-version:in-reply-to:date:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to; bh=KOZcKUaQjl52TKTb2c8zMCvsKmsV/y/lPeyOuQ6q8ow=; b=gOxe6mHRmMKj19Yx6H81TlNRH+fHSSGfbw+FWqZzCE/JmoSmwJUuY9eWzPAttAl73T e0HlgJtaWxpjo2ss678O2nUEE33QNLG4x/+H7jEekKeSRdmozrdNn8y33UJld8GZ+FsH 09BUW6bqHuMlOIXJGNrNLT1xjfn+Pv+tCrtf/pfelqYP6aas9JX6KOAGrSk53dBFJN8y cBbaQACYLMvzRf5J68RSfvPzXIzqg3EBdHMa+8VP986v1IY3HEmJSL0yev25jY5aux8D i96wEkrSCl57Obn4/cLoY2pwbuYmXt3im9xJAcgmnTnDPR49uOYwtANr6kBEqgNdMTUW jtNg== X-Forwarded-Encrypted: i=1; AJvYcCUf1dtx/JLzvsZ8BqLQJzA+GmIjcsxJgXCYjXqOc5NZz/V8Irz9hcBcZJl0AIKrp83bFa94xhYwkN2ZBDm14rw=@lists.linux.dev X-Gm-Message-State: AOJu0Yz9eGzX0B95NirBV/Fe2u2Y8N2h/6ct8B5tsZe9PGVoJjGtt6/i jaliyQlAbepvsA27iqxbNGhKOI+D3w0zinAQvtTnvSIJd7ee77CgwxcB5gbo13huyEWc89EcuQw 39q9teQ== X-Google-Smtp-Source: AGHT+IFYeUo9ghhsjfaPnkIvUWWb4I4GUIwXFFyCVFrvfzUwD+cx16qLBp9A0yGOlezJ5enJQwgNYB7XxzE= X-Received: from plblb8.prod.google.com ([2002:a17:902:fa48:b0:24c:7829:4af6]) (user=jthies job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:2446:b0:274:3db8:e755 with SMTP id d9443c01a7336-28e7f2f7565mr44337445ad.30.1759347234575; Wed, 01 Oct 2025 12:33:54 -0700 (PDT) Date: Wed, 1 Oct 2025 19:33:41 +0000 In-Reply-To: <20251001193346.1724998-1-jthies@google.com> Precedence: bulk X-Mailing-List: chrome-platform@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20251001193346.1724998-1-jthies@google.com> X-Mailer: git-send-email 2.51.0.618.g983fd99d29-goog Message-ID: <20251001193346.1724998-2-jthies@google.com> Subject: [PATCH v2 1/3] dt-bindings: chrome: Add Cros EC UCSI driver From: Jameson Thies To: akuchynski@chromium.org, abhishekpandit@chromium.org, krzk+dt@kernel.org, robh@kernel.org, bleung@chromium.org, heikki.krogerus@linux.intel.com, ukaszb@chromium.org, tzungbi@kernel.org Cc: devicetree@vger.kernel.org, chrome-platform@lists.linux.dev, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, Jameson Thies Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Chrome OS devices with PDCs allow the host to read port status and control port behavior with UCSI commands sent to the embedded controller (EC). Add documentation for cros-ec-ucsi node which loads the Chrome OS UCSI driver. Signed-off-by: Jameson Thies --- .../bindings/chrome/google,cros-ec-ucsi.yaml | 71 +++++++++++++++++++ .../bindings/mfd/google,cros-ec.yaml | 4 +- 2 files changed, 74 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/chrome/google,cros-ec= -ucsi.yaml diff --git a/Documentation/devicetree/bindings/chrome/google,cros-ec-ucsi.y= aml b/Documentation/devicetree/bindings/chrome/google,cros-ec-ucsi.yaml new file mode 100644 index 000000000000..2121776e3ff0 --- /dev/null +++ b/Documentation/devicetree/bindings/chrome/google,cros-ec-ucsi.yaml @@ -0,0 +1,71 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/chrome/google,cros-ec-ucsi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Google Chrome OS EC(Embedded Controller) UCSI driver. + +maintainers: + - Abhishek Pandit-Subedi + - Andrei Kuchynski + - Benson Leung + - Jameson Thies + - =C5=81ukasz Bartosik + +description: + Chrome OS devices with PDC-based USB-C ports expose a UCSI interface + from the Embedded Controller (EC) which allows the host to request + port state and control limited port behavior (DR/PR swap). This node + allows the host UCSI driver to send and receive UCSI commands to a + Chrome OS EC. The node for this device should be under a cros-ec node + like google,cros-ec-spi. + +properties: + compatible: + const: google,cros-ec-ucsi + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + '^connector@[0-9a-f]+$': + $ref: /schemas/connector/usb-connector.yaml# + required: + - reg + +required: + - compatible + +additionalProperties: false + +examples: + - |+ + spi { + #address-cells =3D <1>; + #size-cells =3D <0>; + + cros_ec: ec@0 { + compatible =3D "google,cros-ec-spi"; + reg =3D <0>; + interrupts =3D <35 0>; + + typec { + compatible =3D "google,cros-ec-ucsi"; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + connector@0 { + compatible =3D "usb-c-connector"; + reg =3D <0>; + power-role =3D "dual"; + data-role =3D "dual"; + try-power-role =3D "source"; + }; + }; + }; + }; diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Do= cumentation/devicetree/bindings/mfd/google,cros-ec.yaml index 50f457090066..646bc81c526f 100644 --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml @@ -99,7 +99,9 @@ properties: gpio-controller: true =20 typec: - $ref: /schemas/chrome/google,cros-ec-typec.yaml# + oneOf: + - $ref: /schemas/chrome/google,cros-ec-typec.yaml# + - $ref: /schemas/chrome/google,cros-ec-ucsi.yaml# =20 ec-pwm: $ref: /schemas/pwm/google,cros-ec-pwm.yaml# --=20 2.51.0.618.g983fd99d29-goog