From patchwork Wed May 29 07:43:39 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chunfeng Yun X-Patchwork-Id: 10966297 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 84461933 for ; Wed, 29 May 2019 07:44:17 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 743A71FF66 for ; Wed, 29 May 2019 07:44:17 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 653F528776; Wed, 29 May 2019 07:44:17 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY 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 CAC961FF66 for ; Wed, 29 May 2019 07:44:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726892AbfE2HoP (ORCPT ); Wed, 29 May 2019 03:44:15 -0400 Received: from mailgw02.mediatek.com ([1.203.163.81]:30881 "EHLO mailgw02.mediatek.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726101AbfE2HoO (ORCPT ); Wed, 29 May 2019 03:44:14 -0400 X-UUID: c5dc104a363640b5a02198dc71712b84-20190529 X-UUID: c5dc104a363640b5a02198dc71712b84-20190529 Received: from mtkcas35.mediatek.inc [(172.27.4.253)] by mailgw02.mediatek.com (envelope-from ) (mailgw01.mediatek.com ESMTP with TLS) with ESMTP id 900374555; Wed, 29 May 2019 15:44:07 +0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by MTKMBS31DR.mediatek.inc (172.27.6.102) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 29 May 2019 15:44:05 +0800 Received: from localhost.localdomain (10.17.3.153) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 29 May 2019 15:44:04 +0800 From: Chunfeng Yun To: Rob Herring , Greg Kroah-Hartman , Heikki Krogerus CC: Mark Rutland , Chunfeng Yun , Matthias Brugger , Adam Thomson , Li Jun , Badhri Jagan Sridharan , Hans de Goede , Andy Shevchenko , Min Guo , , , , , , Biju Das , Linus Walleij , Yu Chen Subject: [PATCH v6 01/10] dt-binding: usb: add usb-role-switch property Date: Wed, 29 May 2019 15:43:39 +0800 Message-ID: <1559115828-19146-2-git-send-email-chunfeng.yun@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1559115828-19146-1-git-send-email-chunfeng.yun@mediatek.com> References: <1559115828-19146-1-git-send-email-chunfeng.yun@mediatek.com> MIME-Version: 1.0 X-MTK: N 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 Add a property usb-role-switch to tell the driver that use USB Role Switch framework to handle the role switch, it's useful when the driver has already supported other ways, such as extcon framework etc. Cc: Biju Das Cc: Yu Chen Signed-off-by: Chunfeng Yun Reviewed-by: Rob Herring Reviewed-by: Heikki Krogerus --- v6: 1. merge into this series patch 2. add Reviewed-by (no v4, v5) v3: add property type, modify description suggested by Heikki v2: describe it in terms of h/w functionality suggested by Rob v1: the property is discussed in: [v2,2/7] dt-bindings: usb: renesas_usb3: add usb-role-switch property https://patchwork.kernel.org/patch/10852497/ Mediatek and Hisilicon also try to use it: [v4,3/6] dt-bindings: usb: mtu3: add properties about USB Role Switch https://patchwork.kernel.org/patch/10918385/ [v4,6/6] usb: mtu3: register a USB Role Switch for dual role mode https://patchwork.kernel.org/patch/10918367/ [v6,10/13] usb: dwc3: Registering a role switch in the DRD code https://patchwork.kernel.org/patch/10909981/ --- Documentation/devicetree/bindings/usb/generic.txt | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt index 0a74ab8dfdc2..cf5a1ad456e6 100644 --- a/Documentation/devicetree/bindings/usb/generic.txt +++ b/Documentation/devicetree/bindings/usb/generic.txt @@ -30,6 +30,10 @@ Optional properties: optional for OTG device. - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is optional for OTG device. + - usb-role-switch: boolean, indicates that the device is capable of assigning + the USB data role (USB host or USB device) for a given + USB connector, such as Type-C, Type-B(micro). + see connector/usb-connector.txt. This is an attribute to a USB controller such as: