From patchwork Mon Aug 19 22:38:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephen Boyd X-Patchwork-Id: 821007 Received: from mail-pf1-f175.google.com (mail-pf1-f175.google.com [209.85.210.175]) (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 7417C201250 for ; Mon, 19 Aug 2024 22:39:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.175 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724107151; cv=none; b=FjdOzZp/rHoDl3UNetRNuL7YU14jVE1yPZXCkkUEXfaU5nkI1BuKpdufdkBvhD5/dzTyySrWDyFPE8QAmILysWAokD82e0oyvCM07XEqGmI9DHzx6OaZv+FnFMrKc0gaqd2mpO7JKJ2JndhRlRNRAE36g2UdOMazLLQWU4JxueQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724107151; c=relaxed/simple; bh=/dI7MR+2Xs16wfk9NVoRInRnpjgI0wsZ+hkJsjkYxjs=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m1xNuWBwk8w5E2sXRXa/Auub4xq3T+G4w0S4WG3Asl7iaEqJn1x+PwY4yC8h+BXeRWahZFa5LJo50o/h31JDOconXqfiWZEnU68uHKxlWfUDSO702/we4+x4g/Pa84m8SwEwIFfSKz62/5xWp9Ms/ybz7fevO2kdQxu0/CPHCA4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=JhqrlOUd; arc=none smtp.client-ip=209.85.210.175 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="JhqrlOUd" Received: by mail-pf1-f175.google.com with SMTP id d2e1a72fcca58-70d316f0060so3910759b3a.1 for ; Mon, 19 Aug 2024 15:39:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1724107148; x=1724711948; 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; bh=3olKCNMmm+bbLjPBrj+yuwpy+tnEYS3+fqAauOCcd9s=; b=JhqrlOUdZDP75Pr//TT8p40l8Mrwjqgh3B2KjpNgUVXNti+zWddC29GHRJ0cARutpI t6DebrGgHTjDaVG1sJmuDVEhTyS0kBdkiSmAgEQHoGRCVZXhPGbT4b63fLuEUUGlqiSm v4BRe8tFdbBXh3Adder1HZrQqT7ul+T9qkcco= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1724107148; x=1724711948; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3olKCNMmm+bbLjPBrj+yuwpy+tnEYS3+fqAauOCcd9s=; b=MSKAJL5OspjR+0XaRG267afxzZyCbW0bcg8q+hH4VAI0aRdbnaCRe8V/VhGXLC0URW y3rwYAE/7Y5Ub6V9DrNCUP0495vvYr/hmwRu7gk/asmU7qp/Am5ik5jQT+iXTM81YYpX BU2IrZRXWiUCPompJuvIDbdPdGXdZmp3gx4EROWcIwcC8mStLffZMsLPAZaw4keJDEcz q1EtrKpkiYqGEN8e3R3M/IJRvfSp8OPMDxXM787EIO6H3qx5WBf8sUyht1Aozx8m/Ca5 j4I8N6Fg3ZxP0OVXjtd7cZnAtIhrSiNgfQ/fwdXAeK/OWH5CXCClmzqKVJFGcLIn77XR KB7A== X-Forwarded-Encrypted: i=1; AJvYcCXWCNwtno0iBCzaNdwWnGAVhB7oiiMBcVP1B9p5pCQYPvBxxRYSIa5KcXlUtg1IKtxgjYwQElmu391Dhj0Az66MU90vviUwY311Gg== X-Gm-Message-State: AOJu0Yyqlkq7aHx+vaDqz5TjgTkCzeB6XcP5AD3mtuwWPr20ixzO5WZ1 Qq24XALzVhqn0RFHRF74TP1p6bcNCmJezqtylsR2xuKjTsxjSsqZXFEbia8NQw== X-Google-Smtp-Source: AGHT+IFuHobXwMpayN/T3l++MLdpiZSou9JMIsZXu7qiGwNDrozpjaxioFvym1cbtCUJdc/lyGhU6w== X-Received: by 2002:a05:6a21:3409:b0:1c0:f114:100c with SMTP id adf61e73a8af0-1cac701c654mr1375044637.17.1724107147591; Mon, 19 Aug 2024 15:39:07 -0700 (PDT) Received: from localhost (210.73.125.34.bc.googleusercontent.com. [34.125.73.210]) by smtp.gmail.com with UTF8SMTPSA id d2e1a72fcca58-7127add6de9sm7314417b3a.12.2024.08.19.15.39.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Aug 2024 15:39:07 -0700 (PDT) From: Stephen Boyd To: chrome-platform@lists.linux.dev Cc: linux-kernel@vger.kernel.org, patches@lists.linux.dev, devicetree@vger.kernel.org, Douglas Anderson , Pin-yen Lin , Andrzej Hajda , Benson Leung , Conor Dooley , Daniel Vetter , David Airlie , Dmitry Baryshkov , dri-devel@lists.freedesktop.org, Guenter Roeck , Jernej Skrabec , Jonas Karlman , Krzysztof Kozlowski , Laurent Pinchart , Lee Jones , Maarten Lankhorst , Maxime Ripard , Neil Armstrong , Prashant Malani , Robert Foss , Rob Herring , Thomas Zimmermann , Tzung-Bi Shih , Alexandre Belloni , Andy Shevchenko , Daniel Scally , Greg Kroah-Hartman , Heikki Krogerus , Ivan Orlov , linux-acpi@vger.kernel.org, linux-usb@vger.kernel.org, Mika Westerberg , "Rafael J . Wysocki" , Sakari Ailus , Vinod Koul Subject: [PATCH v3 14/17] dt-bindings: usb: Add ports to google, cros-ec-typec for DP altmode Date: Mon, 19 Aug 2024 15:38:28 -0700 Message-ID: <20240819223834.2049862-15-swboyd@chromium.org> X-Mailer: git-send-email 2.46.0.184.g6999bdac58-goog In-Reply-To: <20240819223834.2049862-1-swboyd@chromium.org> References: <20240819223834.2049862-1-swboyd@chromium.org> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a DT graph binding to google,cros-ec-typec so that it can combine DisplayPort (DP) and USB SuperSpeed (SS) data into a USB type-c endpoint that is connected to the usb-c-connector node's SS endpoint. This also allows us to connect the DP and USB nodes in the graph to the USB type-c connectors, providing the full picture of the USB type-c data flows in the system. Allow there to be multiple typec nodes underneath the EC node so that one DT graph exists per DP bridge. The EC is actually controlling TCPCs and redrivers that combine the DP and USB signals together so this more accurately reflects the hardware design without introducing yet another DT node underneath the EC for USB type-c. If the type-c ports are being shared between a single DP controller then the ports need to know about each other and determine a policy to drive DP to one type-c port. If the type-c ports each have their own dedicated DP controller then they're able to operate independently and enter/exit DP altmode independently as well. We can't connect the DP controller's endpoint to one usb-c-connector port@1 endpoint and the USB controller's endpoint to another usb-c-connector port@1 endpoint either because the DP muxing case would have DP connected to two usb-c-connector endpoints which the graph binding doesn't support. Therefore, one typec node is required per the capabilities of the type-c port(s) being managed. This also lets us indicate which type-c ports the DP controller is wired to. For example, if DP was connected to ports 0 and 2, while port 1 was connected to another DP controller we wouldn't be able to implement that without having some other DT property to indicate which output ports are connected to the DP endpoint. Cc: Rob Herring Cc: Krzysztof Kozlowski Cc: Conor Dooley Cc: Lee Jones Cc: Benson Leung Cc: Guenter Roeck Cc: Prashant Malani Cc: Tzung-Bi Shih Cc: Cc: Cc: Pin-yen Lin Signed-off-by: Stephen Boyd Reviewed-by: Rob Herring (Arm) --- .../bindings/mfd/google,cros-ec.yaml | 7 +- .../bindings/usb/google,cros-ec-typec.yaml | 229 ++++++++++++++++++ 2 files changed, 233 insertions(+), 3 deletions(-) diff --git a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml index c991626dc22b..bbe28047d0c0 100644 --- a/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml +++ b/Documentation/devicetree/bindings/mfd/google,cros-ec.yaml @@ -98,9 +98,6 @@ properties: gpio-controller: true - typec: - $ref: /schemas/usb/google,cros-ec-typec.yaml# - ec-pwm: $ref: /schemas/pwm/google,cros-ec-pwm.yaml# deprecated: true @@ -166,6 +163,10 @@ patternProperties: type: object $ref: /schemas/extcon/extcon-usbc-cros-ec.yaml# + "^typec(-[0-9])*$": + type: object + $ref: /schemas/usb/google,cros-ec-typec.yaml# + required: - compatible diff --git a/Documentation/devicetree/bindings/usb/google,cros-ec-typec.yaml b/Documentation/devicetree/bindings/usb/google,cros-ec-typec.yaml index 5ec4a9777ea1..d4c5c92c78ce 100644 --- a/Documentation/devicetree/bindings/usb/google,cros-ec-typec.yaml +++ b/Documentation/devicetree/bindings/usb/google,cros-ec-typec.yaml @@ -26,6 +26,106 @@ properties: '#size-cells': const: 0 + mux-gpios: + description: GPIOs indicating which way the DP mux is steered + maxItems: 1 + + no-hpd: + description: Indicates this endpoint doesn't signal HPD for DisplayPort + type: boolean + + mode-switch: + $ref: usb-switch.yaml#properties/mode-switch + + orientation-switch: + $ref: usb-switch.yaml#properties/orientation-switch + + ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port@0: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: Output ports for combined DP and USB SS data + patternProperties: + "^endpoint@([0-8])$": + $ref: usb-switch.yaml#/$defs/usbc-out-endpoint + unevaluatedProperties: false + + anyOf: + - required: + - endpoint@0 + - required: + - endpoint@1 + - required: + - endpoint@2 + - required: + - endpoint@3 + - required: + - endpoint@4 + - required: + - endpoint@5 + - required: + - endpoint@6 + - required: + - endpoint@7 + - required: + - endpoint@8 + + port@1: + $ref: /schemas/graph.yaml#/$defs/port-base + unevaluatedProperties: false + description: + Input port to receive USB SuperSpeed (SS) data + patternProperties: + "^endpoint@([0-8])$": + $ref: usb-switch.yaml#/$defs/usbc-in-endpoint + unevaluatedProperties: false + + anyOf: + - required: + - endpoint@0 + - required: + - endpoint@1 + - required: + - endpoint@2 + - required: + - endpoint@3 + - required: + - endpoint@4 + - required: + - endpoint@5 + - required: + - endpoint@6 + - required: + - endpoint@7 + - required: + - endpoint@8 + + port@2: + $ref: /schemas/graph.yaml#/$defs/port-base + description: + Input port to receive DisplayPort (DP) data + unevaluatedProperties: false + + properties: + endpoint: + $ref: usb-switch.yaml#/$defs/dp-endpoint + unevaluatedProperties: false + + required: + - endpoint + + required: + - port@0 + + anyOf: + - required: + - port@1 + - required: + - port@2 + patternProperties: '^connector@[0-9a-f]+$': $ref: /schemas/connector/usb-connector.yaml# @@ -35,6 +135,40 @@ patternProperties: required: - compatible +allOf: + - if: + required: + - no-hpd + then: + properties: + ports: + required: + - port@2 + - if: + required: + - mux-gpios + then: + properties: + ports: + required: + - port@2 + - if: + required: + - orientation-switch + then: + properties: + ports: + required: + - port@2 + - if: + required: + - mode-switch + then: + properties: + ports: + required: + - port@2 + additionalProperties: false examples: @@ -50,6 +184,8 @@ examples: typec { compatible = "google,cros-ec-typec"; + orientation-switch; + mode-switch; #address-cells = <1>; #size-cells = <0>; @@ -60,6 +196,99 @@ examples: power-role = "dual"; data-role = "dual"; try-power-role = "source"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + usb_c0_hs: endpoint { + remote-endpoint = <&usb_hub_dfp3_hs>; + }; + }; + + port@1 { + reg = <1>; + usb_c0_ss: endpoint { + remote-endpoint = <&cros_typec_c0_ss>; + }; + }; + }; + }; + + connector@1 { + compatible = "usb-c-connector"; + reg = <1>; + power-role = "dual"; + data-role = "dual"; + try-power-role = "source"; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + usb_c1_hs: endpoint { + remote-endpoint = <&usb_hub_dfp2_hs>; + }; + }; + + port@1 { + reg = <1>; + usb_c1_ss: endpoint { + remote-endpoint = <&cros_typec_c1_ss>; + }; + }; + }; + }; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + #address-cells = <1>; + #size-cells = <0>; + + cros_typec_c0_ss: endpoint@0 { + reg = <0>; + remote-endpoint = <&usb_c0_ss>; + data-lanes = <0 1 2 3>; + }; + + cros_typec_c1_ss: endpoint@1 { + reg = <1>; + remote-endpoint = <&usb_c1_ss>; + data-lanes = <2 3 0 1>; + }; + }; + + port@1 { + reg = <1>; + #address-cells = <1>; + #size-cells = <0>; + + usb_in_0: endpoint@0 { + reg = <0>; + remote-endpoint = <&usb_ss_0_out>; + }; + + usb_in_1: endpoint@1 { + reg = <1>; + remote-endpoint = <&usb_ss_1_out>; + }; + }; + + port@2 { + reg = <2>; + dp_in: endpoint { + remote-endpoint = <&dp_phy>; + data-lanes = <0 1>; + }; + }; }; }; };