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Wed, 29 May 2019 15:44:07 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Heikki Krogerus Subject: [PATCH v6 03/10] dt-bindings: usb: add binding for Type-B GPIO connector driver Date: Wed, 29 May 2019 15:43:41 +0800 Message-ID: <1559115828-19146-4-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1559115828-19146-1-git-send-email-chunfeng.yun@mediatek.com> References: <1559115828-19146-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190529_004425_568894_DB404E91 X-CRM114-Status: GOOD ( 12.60 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Hans de Goede , Badhri Jagan Sridharan , Linus Walleij , linux-usb@vger.kernel.org, Yu Chen , linux-kernel@vger.kernel.org, Biju Das , Matthias Brugger , Andy Shevchenko , linux-mediatek@lists.infradead.org, Min Guo , Chunfeng Yun , Adam Thomson , linux-arm-kernel@lists.infradead.org, Li Jun Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP It's used to support dual role switch via GPIO when use Type-B receptacle, typically the USB ID pin is connected to an input GPIO pin Signed-off-by: Chunfeng Yun --- v6 changes: 1. remove status and port nodes in example 2. make vbus-supply as optional property v5 changes: 1. treat type-B connector as child device of USB controller's, but not as a separate virtual device, suggested by Rob 2. put connector's port node under connector node, suggested by Rob v4 no changes v3 changes: 1. treat type-B connector as a virtual device, but not child device of USB controller's v2 changes: 1. new patch to make binding clear suggested by Hans --- .../bindings/usb/typeb-conn-gpio.txt | 30 +++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt diff --git a/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt b/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt new file mode 100644 index 000000000000..5be443a16c6b --- /dev/null +++ b/Documentation/devicetree/bindings/usb/typeb-conn-gpio.txt @@ -0,0 +1,30 @@ +USB Type-B GPIO Connector + +This is typically used to switch dual role mode from the USB ID pin connected +to an input GPIO pin. + +Required properties: +- compatible : should include "linux,typeb-conn-gpio" and "usb-b-connector". +- id-gpios, vbus-gpios : input gpios, either one of them must be present, + and both can be present as well. + see connector/usb-connector.txt + +Optional properties: +- vbus-supply : can be present if needed when supports dual role mode. + see connector/usb-connector.txt + +- Sub-nodes: + - port : can be present. + see graph.txt + +Example: + +&mtu3 { + connector { + compatible = "linux,typeb-conn-gpio", "usb-b-connector"; + label = "micro-USB"; + type = "micro"; + id-gpios = <&pio 12 GPIO_ACTIVE_HIGH>; + vbus-supply = <&usb_p0_vbus>; + }; +};