Messages in this thread Patch in this message | | | From | Mauro Carvalho Chehab <> | Subject | [PATCH v2 1/7] dt-bindings: misc: add schema for USB hub on Kirin devices | Date | Fri, 17 Dec 2021 11:12:45 +0100 |
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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 schema and added HiKey970 example] 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> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> ---
See [PATCH v2 0/7] at: https://lore.kernel.org/all/cover.1639735742.git.mchehab@kernel.org/
.../bindings/misc/hisilicon,hikey-usb.yaml | 84 +++++++++++++++++++ 1 file changed, 84 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..208c49478f1f --- /dev/null +++ b/Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml @@ -0,0 +1,84 @@ +# 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 hubs found on HiKey960/970. + Such hubs require a power supply for the USB I/O. Depending on the + exact hub model, after USB I/O is powered up, a reset should be needed. + + It also 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 and powers up the onboard USB-A host ports. + + Schematics about such hubs 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,usbhub + + typec-vbus-gpios: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: phandle to the typec-vbus gpio + + otg-switch-gpios: + $ref: /schemas/types.yaml#/definitions/phandle-array + description: phandle to the otg-switch gpio + + hub-reset-en-gpios: + $ref: /schemas/types.yaml#/definitions/phandle-array + 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: | + describe a USB port and its endpoints. + +required: + - compatible + - hub-vdd-supply + - port + +additionalProperties: false + +examples: + - | + #include <dt-bindings/gpio/gpio.h> + + usb-hub { + compatible = "hisilicon,usbhub"; + typec-vbus-gpios = <&gpio25 2 GPIO_ACTIVE_HIGH>; + otg-switch-gpios = <&gpio25 6 GPIO_ACTIVE_HIGH>; + hub-reset-en-gpios = <&gpio0 3 GPIO_ACTIVE_HIGH>; + hub-vdd-supply = <&usb_hub_vdd>; + usb-role-switch; + port { + #address-cells = <1>; + #size-cells = <0>; + usb_ep0: endpoint@0 { + reg = <0>; + remote-endpoint = <&dwc3_role_switch>; + }; + usb_ep1: endpoint@1 { + reg = <1>; + remote-endpoint = <&rt1711h_ep>; + }; + }; + }; -- 2.33.1
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