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Tue, 21 Apr 2026 02:35:00 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 222.71.101.198) smtp.mailfrom=cixtech.com; dkim=none (message not signed) header.d=none;dmarc=bestguesspass action=none header.from=cixtech.com; Received-SPF: Pass (protection.outlook.com: domain of cixtech.com designates 222.71.101.198 as permitted sender) receiver=protection.outlook.com; client-ip=222.71.101.198; helo=smtprelay.cixcomputing.com; pr=C Received: from smtprelay.cixcomputing.com (222.71.101.198) by OSA0EPF000000CA.mail.protection.outlook.com (10.167.240.56) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9791.48 via Frontend Transport; Tue, 21 Apr 2026 02:35:00 +0000 Received: from nchen-desktop (unknown [172.16.64.25]) by smtprelay.cixcomputing.com (Postfix) with ESMTPSA id 728004126F8F; Tue, 21 Apr 2026 10:34:59 +0800 (CST) From: Peter Chen To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, arnd@arndb.de, gregkh@linuxfoundation.org, pawell@cadence.com, rogerq@kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, cix-kernel-upstream@cixtech.com, Peter Chen Subject: [PATCH v3 1/2] dt-bindings: usb: cdns,usb3: document USBSSP controller support Date: Tue, 21 Apr 2026 10:34:58 +0800 Message-ID: <20260421023459.506145-2-peter.chen@cixtech.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20260421023459.506145-1-peter.chen@cixtech.com> References: <20260421023459.506145-1-peter.chen@cixtech.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; 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Both USBSS and USBSSP share the same DRD/OTG register interface, so the driver auto-detects the controller version at runtime: no additional compatible string is needed. Changes to the binding: - Update title and add description - maximum-speed: add super-speed-plus Assisted-by: Cursor:claude-4.6-opus Acked-by: Rob Herring (Arm) Signed-off-by: Peter Chen --- Documentation/devicetree/bindings/usb/cdns,usb3.yaml | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml index f454ddd9bbaa..ad5acf956edf 100644 --- a/Documentation/devicetree/bindings/usb/cdns,usb3.yaml +++ b/Documentation/devicetree/bindings/usb/cdns,usb3.yaml @@ -4,11 +4,17 @@ $id: http://devicetree.org/schemas/usb/cdns,usb3.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: Cadence USBSS-DRD controller +title: Cadence USBSS and USBSSP DRD controller maintainers: - Pawel Laszczak +description: + Cadence USB dual-role controller. Covers USBSS (SuperSpeed, USB 3.0) and + USBSSP (SuperSpeed Plus, USB 3.1 gen2x1). Both variants share the same + DRD/OTG register interface, so the driver auto-detects the controller + version at runtime. + properties: compatible: const: cdns,usb3 @@ -49,7 +55,7 @@ properties: cdns3 to type C connector. maximum-speed: - enum: [super-speed, high-speed, full-speed] + enum: [super-speed-plus, super-speed, high-speed, full-speed] phys: minItems: 1 -- 2.50.1