From patchwork Tue Nov 16 11:59:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mauro Carvalho Chehab X-Patchwork-Id: 1555769 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: bilbo.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=UZzeo1Uh; dkim-atps=neutral Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by bilbo.ozlabs.org (Postfix) with ESMTP id 4Htl5P2Hj8z9sX3 for ; Tue, 16 Nov 2021 23:01:13 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235903AbhKPMEF (ORCPT ); Tue, 16 Nov 2021 07:04:05 -0500 Received: from mail.kernel.org ([198.145.29.99]:46138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235772AbhKPMCf (ORCPT ); Tue, 16 Nov 2021 07:02:35 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 6C9AB61B3D; Tue, 16 Nov 2021 11:59:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1637063977; bh=df14JGKlUeX7NKfDTE3TdiGoz6heYyGKroNP1yFBtO4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UZzeo1UhFOOa0928bZvUC/3yMj6se3/lHq1pgYQo8Ckfx+CejetxuvsZB1hq8hsgQ TJUrwP7YDSZe5kUpgJ5xMwS4G5n/LZsRkk+b6gUqBmw67QD6vH/CiZLvPs3CiHdR3T kBIRDkx8eS0ONAt0joJ5Oj8eu59TABr1k9ohbllOHuRoSfkMi350Upv7b0a3fBPjB8 WHXYE6nIor4amBYbq1Yp3lwPYlqgcKZvucOa9NyQxK3WoIxgyWvxWFgEw9TJXeszm4 I4Lq0nnMp6P4sG7dja9igjg6/QGXxMknUl5W3/5F3VAL4111h9pphF53Ih46ua8AiU NMMio6kTErE2g== Received: by mail.kernel.org with local (Exim 4.94.2) (envelope-from ) id 1mmx7e-00A97I-Ei; Tue, 16 Nov 2021 11:59:34 +0000 From: Mauro Carvalho Chehab To: Wei Xu , Rob Herring Cc: linuxarm@huawei.com, mauro.chehab@huawei.com, Yu Chen , John Stultz , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Mauro Carvalho Chehab Subject: [PATCH 1/5] dt-bindings: misc: add schema for USB hub on Kirin devices Date: Tue, 16 Nov 2021 11:59:29 +0000 Message-Id: <7b5de4ad12e3678e891335611cfd2a70758d24bf.1637063775.git.mchehab+huawei@kernel.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: References: MIME-Version: 1.0 Sender: Mauro Carvalho Chehab Precedence: bulk List-ID: X-Mailing-List: devicetree@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 --- To mailbombing on a large number of people, only mailing lists were C/C on the cover. See [PATCH 0/5] at: https://lore.kernel.org/all/cover.1637063775.git.mchehab+huawei@kernel.org/ .../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>; + }; + }; + };