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 X-Spam-Level: X-Spam-Status: No, score=-24.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5D69C433EF for ; Fri, 3 Sep 2021 09:28:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D422C6108E for ; Fri, 3 Sep 2021 09:28:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348828AbhICJ3v (ORCPT ); Fri, 3 Sep 2021 05:29:51 -0400 Received: from mail.kernel.org ([198.145.29.99]:32818 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1348791AbhICJ3i (ORCPT ); Fri, 3 Sep 2021 05:29:38 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 044D4610A1; Fri, 3 Sep 2021 09:28:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1630661319; bh=aYODkh8cK4PFOh3SK7n+CRjrZVA5pL0qjjkMR3jTLuc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=pH0aodL/w2UaKlA6wt2zl/DGKZEyDkFzas7sRwsztY029WklbRh2LqfVWXYKsECca 6QOSp46A7cXcB+XB75ePKmDhDOAAwmaEuTORb4J1uZ20SIWYFZwGOr44lg8ENYQolK d70plGRE5nhH6icif8nVv7pcYSue0q69uCXZxNZw/EFxdzn7lmS98k2p9KvYxiPlHP LdkATQ5IlOibsM9c1faGWTC6mkEwrINx7sifSG9yiB85zOTGJ//TYppZIqyy5sEMOo oLU8jNRtoSMtXbLOFtgJSUJjjtx0UclrElraP1jIPdIgreZRUweOpFcfxP4sQ9jX0M izx9XydJ3nOow== Received: by mail.kernel.org with local (Exim 4.94.2) (envelope-from ) id 1mM5Uy-000zwS-Uj; Fri, 03 Sep 2021 11:28:36 +0200 From: Mauro Carvalho Chehab To: Rob Herring , John Stultz Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Yu Chen , Rob Herring , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab Subject: [PATCH v4 1/4] dt-bindings: misc: add schema for USB hub on Kirin devices Date: Fri, 3 Sep 2021 11:28:32 +0200 Message-Id: <71f4aea9935fe03ff9eeca650ecd64515e0b1950.1630659949.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: Mauro Carvalho Chehab Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 --- .../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>; + }; + }; + }; -- 2.31.1