From patchwork Wed Apr 18 08:09:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 10347547 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9908C60365 for ; Wed, 18 Apr 2018 08:12:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8FE35284CE for ; Wed, 18 Apr 2018 08:12:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8447C2859A; Wed, 18 Apr 2018 08:12:00 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13165284CE for ; 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a=rsa-sha256; c=relaxed/relaxed; d=renesasgroup.onmicrosoft.com; s=selector1-renesas-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=OvVK34Z0Xhc5+KXfRNcvbIxee9LXIOjdPelC30mtXBc=; b=C/hevC+5cnr0fxPWMOjrmpofsahvcrJQyhyqd4ID6Cc7fRm/CGGpFosmvT5HLFSjR/pRm16HWTl5xuExZG2IJmI3tFcIi0xWluahAYe3VO5Kt26/+PJwa5XcZcqieUBef3Qel8U1uy7AieJu1Gu35Gvwelj1RC2gpkhuVrMtZIs= Authentication-Results: linuxfoundation.org; dkim=none (message not signed) header.d=none; linuxfoundation.org; dmarc=none action=none header.from=renesas.com; Received: from localhost.localdomain (211.11.155.138) by SG2PR06MB0982.apcprd06.prod.outlook.com (2a01:111:e400:5213::24) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P256) id 15.20.675.14; Wed, 18 Apr 2018 08:10:30 +0000 From: Yoshihiro Shimoda To: gregkh@linuxfoundation.org, robh+dt@kernel.org, mark.rutland@arm.com, frowand.list@gmail.com Cc: heikki.krogerus@linux.intel.com, hdegoede@redhat.com, andy.shevchenko@gmail.com, p.zabel@pengutronix.de, linux-usb@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH/RFC 02/11] dt-bindings: usb: add usb role switch driver Date: Wed, 18 Apr 2018 17:09:56 +0900 Message-Id: <1524039005-30618-3-git-send-email-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1524039005-30618-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> References: <1524039005-30618-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> MIME-Version: 1.0 X-Originating-IP: [211.11.155.138] X-ClientProxiedBy: OSAPR01CA0023.jpnprd01.prod.outlook.com (2603:1096:603:2a::35) To SG2PR06MB0982.apcprd06.prod.outlook.com (2a01:111:e400:5213::24) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:; 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20:x6swXsDRr/Tat8ErAI91LBIZ0Z3xXHUWDA/QaqNhQJaGgDuAN/XTzp6K5bKOJKyMDtiMNNl0RugAPCjP2fxUf3UCHy2XW0O9uUmJnQjQv8taTGPFjZDk4R8SRZUWSZwXYq4tB5b43gPC3Eis+C+irUIbp+bbFRWQIZZV50AY2W0= X-MS-Office365-Filtering-Correlation-Id: 3e7fdfb0-4c44-4ba8-d359-08d5a503dad3 X-OriginatorOrg: renesas.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Apr 2018 08:10:30.4937 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3e7fdfb0-4c44-4ba8-d359-08d5a503dad3 X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 53d82571-da19-47e4-9cb4-625a166a4a2a X-MS-Exchange-Transport-CrossTenantHeadersStamped: SG2PR06MB0982 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds a new documentation for a usb role switch driver. The usb role switch framework will parse this to get each device pointer by using each remote-endpoint. Signed-off-by: Yoshihiro Shimoda --- .../devicetree/bindings/usb/usb-role-switch.txt | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/usb-role-switch.txt diff --git a/Documentation/devicetree/bindings/usb/usb-role-switch.txt b/Documentation/devicetree/bindings/usb/usb-role-switch.txt new file mode 100644 index 0000000..941d582 --- /dev/null +++ b/Documentation/devicetree/bindings/usb/usb-role-switch.txt @@ -0,0 +1,42 @@ +USB role switch driver + +Optional nodes: +- If a role switch driver has OF graph ports, the usb role switch framework + will parse the remote-endpoints in usb_role_switch_register(). The OF graph + port number as follows: + 0: USB 2.0 host port + 1: USB 3.0 host port + 2: UDC port + +For example: + usb-role-sw { + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + + usb2_host_sw0: endpoint { + remote-endpoint = <&usb2_host_ep0>; + }; + }; + + port@1 { + reg = <1>; + + usb3_host_sw0: endpoint { + remote-endpoint = <&usb3_host_ep0>; + }; + }; + + port@2 { + reg = <2>; + + udc_sw0: endpoint { + remote-endpoint = <&udc_ep0>; + }; + }; + }; + };