From: Chunfeng Yun <chunfeng.yun@mediatek.com>
To: Rob Herring <robh+dt@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Biju Das <biju.das@bp.renesas.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
Chunfeng Yun <chunfeng.yun@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
Adam Thomson <Adam.Thomson.Opensource@diasemi.com>,
Li Jun <jun.li@nxp.com>,
Badhri Jagan Sridharan <badhri@google.com>,
Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Hans de Goede <hdegoede@redhat.com>,
Andy Shevchenko <andy.shevchenko@gmail.com>,
Min Guo <min.guo@mediatek.com>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-usb@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
Linus Walleij <linus.walleij@linaro.org>,
Nagarjuna Kristam <nkristam@nvidia.com>
Subject: [PATCH next v10 03/11] dt-bindings: usb: add binding for USB GPIO based connection detection driver
Date: Fri, 23 Aug 2019 15:57:13 +0800 [thread overview]
Message-ID: <1566547041-20804-4-git-send-email-chunfeng.yun@mediatek.com> (raw)
In-Reply-To: <1566547041-20804-1-git-send-email-chunfeng.yun@mediatek.com>
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, and also used to enable/disable device when the USB Vbus
pin is connected to an input GPIO.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v9~v10 no changes
v8 changes:
1. rename the title
2. change the compatible as "linux,usb-conn-gpio" instead of
"linux,typeb-conn-gpio"
v7 changes:
1. add description for device only mode
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
---
.../devicetree/bindings/usb/usb-conn-gpio.txt | 31 +++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
diff --git a/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt b/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
new file mode 100644
index 000000000000..d4d107fedc22
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/usb-conn-gpio.txt
@@ -0,0 +1,31 @@
+USB GPIO Based Connection Detection
+
+This is typically used to switch dual role mode from the USB ID pin connected
+to an input GPIO, and also used to enable/disable device mode from the USB
+Vbus pin connected to an input GPIO.
+
+Required properties:
+- compatible : should include "linux,usb-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,usb-conn-gpio", "usb-b-connector";
+ label = "micro-USB";
+ type = "micro";
+ id-gpios = <&pio 12 GPIO_ACTIVE_HIGH>;
+ vbus-supply = <&usb_p0_vbus>;
+ };
+};
--
2.23.0
next prev parent reply other threads:[~2019-08-23 7:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 7:57 [PATCH next v10 00/11] add USB GPIO based connection detection driver Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 01/11] dt-binding: usb: add usb-role-switch property Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 02/11] dt-bindings: connector: add optional properties for Type-B Chunfeng Yun
2019-08-23 7:57 ` Chunfeng Yun [this message]
2019-08-23 10:07 ` [PATCH next v10 03/11] dt-bindings: usb: add binding for USB GPIO based connection detection driver Linus Walleij
2019-08-27 18:31 ` Rob Herring
2019-08-28 1:28 ` Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 04/11] dt-bindings: usb: mtu3: add properties about USB Role Switch Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 05/11] usb: roles: Introduce stubs for the exiting functions in role.h Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 06/11] device connection: Add fwnode_connection_find_match() Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 07/11] usb: roles: Add fwnode_usb_role_switch_get() function Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 08/11] usb: roles: get usb-role-switch from parent Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 09/11] usb: common: create Kconfig file Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 10/11] usb: common: add USB GPIO based connection detection driver Chunfeng Yun
2019-08-23 7:57 ` [PATCH next v10 11/11] usb: mtu3: register a USB Role Switch for dual role mode Chunfeng Yun
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