From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
To: Rob Herring <robh+dt@kernel.org>
Cc: linuxarm@huawei.com, mauro.chehab@huawei.com,
Yu Chen <chenyu56@huawei.com>,
John Stultz <john.stultz@linaro.org>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Subject: [PATCH] dt-bindings: misc: add schema for USB hub on Kirin devices
Date: Thu, 5 Aug 2021 12:31:00 +0200 [thread overview]
Message-ID: <d428b90bb655c7992e9e13fc50130ed223812d2d.1628159456.git.mchehab+huawei@kernel.org> (raw)
From: Yu Chen <chenyu56@huawei.com>
This patch adds binding documentation to support USB HUB and
USB data role switch of HiSilicon HiKey960 and HiKey970 boards.
[mchehab: updated OF names and added support for HiKey970]
Signed-off-by: Yu Chen <chenyu56@huawei.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../bindings/misc/hisilicon,hikey-usb.yaml | 95 +++++++++++++++++++
1 file changed, 95 insertions(+)
create mode 100644 Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml
diff --git a/Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml b/Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml
new file mode 100644
index 000000000000..857f9bd802fe
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+# Copyright 2019 Linaro Ltd.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/hisilicon,hikey-usb.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HiKey960/970 onboard USB GPIO Hub
+
+maintainers:
+ - John Stultz <john.stultz@linaro.org>
+
+description: |
+ Supports the onboard USB GPIO hub found on HiKey960/970.
+ The HUB, which acts as a role-switch intermediary to detect the state of
+ the USB-C port, to switch the hub into dual-role USB-C or host mode,
+ which enables the onboard USB-A host ports.
+
+ Schematics about the hub can be found here:
+ https://github.com/96boards/documentation/raw/master/consumer/hikey/hikey960/hardware-docs/HiKey960_Schematics.pdf
+ https://www.96boards.org/documentation/consumer/hikey/hikey970/hardware-docs/files/hikey970-schematics.pdf
+
+properties:
+ compatible:
+ enum:
+ - hisilicon,gpio_hubv1
+ - hisilicon,kirin970_hikey_usbhub
+
+ typec-vbus:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: phandle to the typec-vbus gpio
+
+ otg-switch:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: phandle to the otg-switch gpio
+
+ hub-vdd33-en:
+ $ref: /schemas/types.yaml#/definitions/phandle-array
+ description: phandle to the hub 3.3v power enablement gpio
+
+ hub_reset_en_gpio:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description: phandle to the hub reset gpio
+
+ usb-role-switch:
+ $ref: /schemas/types.yaml#/definitions/flag
+ description: Support role switch.
+
+ hub-vdd-supply:
+ description: regulator for hub power
+
+ port:
+ description: |
+ any connector to the data bus of this controller should be modelled
+ using the OF graph bindings specified, if the "usb-role-switch"
+ property is used. Note for this driver, two ports are supported,
+ the first being the endpoint that will be notified by this driver,
+ and the second being the endpoint that notifies this driver of a
+ role switch.
+
+
+required:
+ - compatible
+ - typec-vbus
+ - otg-switch
+ - usb-role-switch
+ - port
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+
+ hisi_hikey_usb: hisi_hikey_usb {
+ compatible = "hisilicon,gpio_hubv1";
+ typec-vbus = <&gpio25 2 GPIO_ACTIVE_HIGH>;
+ otg-switch = <&gpio25 6 GPIO_ACTIVE_HIGH>;
+ hub-vdd33-en = <&gpio5 6 GPIO_ACTIVE_HIGH>;
+ usb-role-switch;
+
+ port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hikey_usb_ep0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&dwc3_role_switch>;
+ };
+ hikey_usb_ep1: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&rt1711h_ep>;
+ };
+ };
+ };
--
2.31.1
next reply other threads:[~2021-08-05 10:31 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-05 10:31 Mauro Carvalho Chehab [this message]
2021-08-13 18:52 ` [PATCH] dt-bindings: misc: add schema for USB hub on Kirin devices Rob Herring
2021-08-14 6:58 ` Mauro Carvalho Chehab
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