linux-kernel - [PATCH v3 02/12] dt-bindings: misc: Add bindings for HiSilicon usb hub and data role switch functionality on HiKey960

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Date:   Sat, 2 Mar 2019 17:04:55 +0800
From:   Yu Chen <chenyu56@...wei.com>
To:     <linux-usb@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <john.stultz@...aro.org>, <suzhuangluan@...ilicon.com>,
        <kongfei@...ilicon.com>, <liuyu712@...ilicon.com>,
        <wanghu17@...ilicon.com>, <butao@...ilicon.com>,
        <chenyao11@...wei.com>, <fangshengzhou@...ilicon.com>,
        <lipengcheng8@...wei.com>, <songxiaowei@...ilicon.com>,
        <xuyiping@...ilicon.com>, <xuyoujun4@...wei.com>,
        <yudongbin@...ilicon.com>, <zangleigang@...ilicon.com>,
        Yu Chen <chenyu56@...wei.com>,
        Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
        Rob Herring <robh+dt@...nel.org>,
        "Mark Rutland" <mark.rutland@....com>,
        Binghui Wang <wangbinghui@...ilicon.com>
Subject: [PATCH v3 02/12] dt-bindings: misc: Add bindings for HiSilicon usb hub and data role switch functionality on HiKey960

This patch adds binding documentation to support usb hub and usb
data role switch of Hisilicon HiKey960 Board.

Cc: Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: John Stultz <john.stultz@...aro.org>
Cc: Binghui Wang <wangbinghui@...ilicon.com>
Signed-off-by: Yu Chen <chenyu56@...wei.com>
---
v1:
* Fix some format errors as suggested by Sergei.
* Modify gpio description to use gpiod API.
v2:
* Remove information about Hikey.
* Fix gpio description.
* Remove device_type of endpoint.
v3:
* Remove property typec-vbus-enable-val.
* Add description of pinctrl-names.
* Add example for "hisilicon,gpio-hubv1"
* Add flag in gpiod properties.
---
---
 .../bindings/misc/hisilicon-hikey-usb.txt          | 52 ++++++++++++++++++++++
 1 file changed, 52 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt

diff --git a/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt b/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt
new file mode 100644
index 000000000000..422e844df719
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/hisilicon-hikey-usb.txt
@@ -0,0 +1,52 @@
+Support usb hub and usb data role switch of Hisilicon HiKey960 Board.
+
+-----------------------------
+
+Required properties:
+- compatible: "hisilicon,gpio-hubv1","hisilicon,hikey960-usb"
+- typec-vbus-gpios: gpio to control the vbus of typeC port
+- otg-switch-gpios: gpio to switch DP & DM between the hub and typeC port
+- hub-vdd33-en-gpios: gpio to enable the power of hub
+- pinctrl-names: pin configuration state name ("default")
+- pinctrl-0: pinctrl config
+
+Example
+-----
+
+	hisi_hikey_usb: hisi_hikey_usb {
+		compatible = "hisilicon,hikey960-usb";
+		typec-vbus-gpios = <&gpio25 2 GPIO_ACTIVE_HIGH>;
+		otg-switch-gpios = <&gpio25 6 GPIO_ACTIVE_HIGH>;
+		hub-vdd33-en-gpios = <&gpio5 6 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usbhub5734_pmx_func>;
+
+		port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hikey_usb_ep: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&dwc3_role_switch_notify>;
+			};
+		};
+	};
+
+	hisi_hikey_usb: hisi_hikey_usb {
+		compatible = "hisilicon,gpio-hubv1";
+		typec-vbus-gpios = <&gpio25 2 GPIO_ACTIVE_LOW>;
+		otg-switch-gpios = <&gpio25 6 GPIO_ACTIVE_HIGH>;
+		hub-vdd33-en-gpios = <&gpio5 6 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usbhub5734_pmx_func>;
+
+		port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hikey_usb_ep: endpoint@0 {
+				reg = <0>;
+				remote-endpoint = <&dwc3_role_switch_notify>;
+			};
+		};
+	};
-- 
2.15.0-rc2