From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 672A7C433EF for ; Tue, 26 Oct 2021 01:06:59 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3A40760C51 for ; Tue, 26 Oct 2021 01:06:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233729AbhJZBJV (ORCPT ); Mon, 25 Oct 2021 21:09:21 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:26196 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232679AbhJZBJU (ORCPT ); Mon, 25 Oct 2021 21:09:20 -0400 Received: from dggeme758-chm.china.huawei.com (unknown [172.30.72.55]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4HdYXW3GdLz8tcK; Tue, 26 Oct 2021 09:05:31 +0800 (CST) Received: from [127.0.0.1] (10.67.102.125) by dggeme758-chm.china.huawei.com (10.3.19.104) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.15; Tue, 26 Oct 2021 09:06:51 +0800 Message-ID: <617754AB.60307@hisilicon.com> Date: Tue, 26 Oct 2021 09:06:51 +0800 From: Wei Xu User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: Mauro Carvalho Chehab , Rob Herring CC: , , Yu Chen , John Stultz , Rob Herring , , , Subject: Re: [PATCH v5] dt-bindings: misc: add schema for USB hub on Kirin devices References: In-Reply-To: Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.67.102.125] X-ClientProxiedBy: dggems701-chm.china.huawei.com (10.3.19.178) To dggeme758-chm.china.huawei.com (10.3.19.104) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Mauro, On 2021/9/28 15:40, Mauro Carvalho Chehab wrote: > From: Yu Chen > > 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 > Signed-off-by: John Stultz > Signed-off-by: Mauro Carvalho Chehab Acked-by: Wei Xu Thanks! Best Regards, Wei > --- > .../bindings/misc/hisilicon,hikey-usb.yaml | 87 +++++++++++++++++++ > 1 file changed, 87 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..761ab686121a > --- /dev/null > +++ b/Documentation/devicetree/bindings/misc/hisilicon,hikey-usb.yaml > @@ -0,0 +1,87 @@ > +# 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 > + > +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 hadware connections between USB endpoints. > + 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 > + - hub-vdd-supply > + - port > + > +additionalProperties: false > + > +examples: > + - | > + #include > + > + 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>; > + }; > + }; > + }; >