From patchwork Mon May 5 22:23:05 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: dinguyen@altera.com X-Patchwork-Id: 345968 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id AF420140312 for ; Tue, 6 May 2014 08:36:40 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932930AbaEEW0D (ORCPT ); Mon, 5 May 2014 18:26:03 -0400 Received: from mail-bn1bon0133.outbound.protection.outlook.com ([157.56.111.133]:40462 "EHLO na01-bn1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S932925AbaEEW0A (ORCPT ); Mon, 5 May 2014 18:26:00 -0400 Received: from BY2FFO11FD057.protection.gbl (10.1.14.34) by BY2FFO11HUB055.protection.gbl (10.1.14.244) with Microsoft SMTP Server (TLS) id 15.0.929.8; Mon, 5 May 2014 22:25:57 +0000 Received: from SJ-ITEXEDGE02.altera.priv.altera.com (66.35.236.232) by BY2FFO11FD057.mail.protection.outlook.com (10.1.15.185) with Microsoft SMTP Server (TLS) id 15.0.929.8 via Frontend Transport; Mon, 5 May 2014 22:25:57 +0000 Received: from sj-mail01.altera.com (137.57.1.6) by SJ-ITEXEDGE02.altera.priv.altera.com (66.35.236.232) with Microsoft SMTP Server id 8.3.348.2; Mon, 5 May 2014 15:12:25 -0700 Received: from linux-builds1.altera.com (linux-builds1.altera.com [137.57.188.114]) by sj-mail01.altera.com (8.13.7+Sun/8.13.7) with ESMTP id s45MPrLD020171; Mon, 5 May 2014 15:25:54 -0700 (PDT) From: To: , , , , , CC: , , , Dinh Nguyen Subject: [PATCH 2/2] Documentation: dt: add an optional dma-desc-enable property for dwc2 usb Date: Mon, 5 May 2014 17:23:05 -0500 Message-ID: <1399328585-30949-2-git-send-email-dinguyen@altera.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1399328585-30949-1-git-send-email-dinguyen@altera.com> References: <1399328585-30949-1-git-send-email-dinguyen@altera.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:66.35.236.232; CTRY:US; IPV:NLI; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019001)(6009001)(199002)(189002)(6806004)(81542001)(74662001)(551934002)(44976005)(80022001)(83322001)(19580395003)(19580405001)(81342001)(31966008)(62966002)(36756003)(77156001)(4396001)(76176999)(47776003)(20776003)(50986999)(76482001)(92566001)(93916002)(86152002)(87936001)(83072002)(85852003)(87286001)(77982001)(84676001)(79102001)(88136002)(97736001)(99396002)(74502001)(50226001)(50466002)(2009001)(92726001)(53416003)(86362001)(46102001)(89996001)(33646001)(48376002); DIR:OUT; SFP:1102; SCL:1; SRVR:BY2FFO11HUB055; H:SJ-ITEXEDGE02.altera.priv.altera.com; FPR:65F64454.3031CC0B.E7E29BC6.44E4C649.20179; MLV:sfv; PTR:InfoDomainNonexistent; A:1; MX:1; LANG:en; X-OriginatorOrg: altera.onmicrosoft.com X-Forefront-PRVS: 0202D21D2F Received-SPF: SoftFail (: domain of transitioning altera.com discourages use of 66.35.236.232 as permitted sender) Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Dinh Nguyen The "dma-desc-enable" property can be used to disable descriptor DMA mode for the DWC2 USB IP. Signed-off-by: Dinh Nguyen --- Documentation/devicetree/bindings/usb/dwc2.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/usb/dwc2.txt b/Documentation/devicetree/bindings/usb/dwc2.txt index b8b6871..37af3bc 100644 --- a/Documentation/devicetree/bindings/usb/dwc2.txt +++ b/Documentation/devicetree/bindings/usb/dwc2.txt @@ -14,6 +14,11 @@ Refer to clk/clock-bindings.txt for generic clock consumer properties Optional properties: - phys: phy provider specifier - phy-names: shall be "device" +- dma-desc-enable: This property is used to disable descriptor DMA support. + The reason why this property is needed is that even if the HW supports + description DMA support, it does not support it for SPLIT transactions. + So this property can be used to optionally disable descriptor DMA + support. Refer to phy/phy-bindings.txt for generic phy consumer properties Example: