linux-kernel - [PATCH 2/7] dt-bindings: usb: dwc3: Add a gpio-usb-connector example

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Message-Id: <20200311191501.8165-3-bryan.odonoghue@linaro.org>
Date:   Wed, 11 Mar 2020 19:14:56 +0000
From:   Bryan O'Donoghue <bryan.odonoghue@...aro.org>
To:     balbi@...nel.org, gregkh@...uxfoundation.org,
        linux-usb@...r.kernel.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        bjorn.andersson@...aro.org, jackp@...eaurora.org, robh@...nel.org,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org
Subject: [PATCH 2/7] dt-bindings: usb: dwc3: Add a gpio-usb-connector example

A USB connector should be a child node of the USB controller
connector/usb-connector.txt. This patch adds an example of how to do this
to the dwc3 binding descriptions.

It is necessary to declare a connector as a child-node of a USB controller
for role-switching to work, so this example should be helpful to others
implementing that.

Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: linux-usb@...r.kernel.org
Cc: devicetree@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Acked-by: Felipe Balbi <balbi@...nel.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Tested-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org>
---
 Documentation/devicetree/bindings/usb/dwc3.txt | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/dwc3.txt b/Documentation/devicetree/bindings/usb/dwc3.txt
index 66780a47ad85..4e1e4afccee6 100644
--- a/Documentation/devicetree/bindings/usb/dwc3.txt
+++ b/Documentation/devicetree/bindings/usb/dwc3.txt
@@ -121,4 +121,12 @@ dwc3@...30000 {
 	interrupts = <0 92 4>
 	usb-phy = <&usb2_phy>, <&usb3,phy>;
 	snps,incr-burst-type-adjustment = <1>, <4>, <8>, <16>;
+
+	usb_con: connector {
+		compatible = "gpio-usb-b-connector";
+		id-gpios = <&tlmm 116 GPIO_ACTIVE_HIGH>;
+		vbus-supply = <&usb3_vbus_reg>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb3_id_pin>, <&usb3_vbus_pin>;
+	};
 };
-- 
2.25.1