From patchwork Wed Apr 23 10:16:53 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 4040011 Return-Path: X-Original-To: patchwork-linux-spi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id BDD0D9F319 for ; Wed, 23 Apr 2014 11:14:27 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id F133B201EC for ; Wed, 23 Apr 2014 11:14:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E1444201E7 for ; Wed, 23 Apr 2014 11:14:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752639AbaDWLOY (ORCPT ); Wed, 23 Apr 2014 07:14:24 -0400 Received: from mail-bl2lp0211.outbound.protection.outlook.com ([207.46.163.211]:32874 "EHLO na01-bl2-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752375AbaDWLOV (ORCPT ); Wed, 23 Apr 2014 07:14:21 -0400 Received: from CH1PR03CA005.namprd03.prod.outlook.com (10.255.156.150) by BLUPR03MB423.namprd03.prod.outlook.com (10.141.78.150) with Microsoft SMTP Server (TLS) id 15.0.921.12; Wed, 23 Apr 2014 11:14:18 +0000 Received: from BY2FFO11FD034.protection.gbl (10.255.156.132) by CH1PR03CA005.outlook.office365.com (10.255.156.150) with Microsoft SMTP Server (TLS) id 15.0.921.12 via Frontend Transport; Wed, 23 Apr 2014 11:14:18 +0000 Received: from az84smr01.freescale.net (192.88.158.246) by BY2FFO11FD034.mail.protection.outlook.com (10.1.14.219) with Microsoft SMTP Server (TLS) id 15.0.929.8 via Frontend Transport; Wed, 23 Apr 2014 11:14:18 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id s3NBDxmY008408; Wed, 23 Apr 2014 04:14:15 -0700 From: Huang Shijie To: CC: , , , , , , , Huang Shijie Subject: [PATCH v1 5/7] mtd: fsl-quadspi: get the dummy cycles for DDR Quad read from the DT property Date: Wed, 23 Apr 2014 18:16:53 +0800 Message-ID: <1398248215-26768-6-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.2.rc3 In-Reply-To: References: X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:192.88.158.246; CTRY:US; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10009001)(6009001)(428001)(189002)(199002)(50986999)(77096999)(80976001)(19580405001)(6806004)(36756003)(19580395003)(83322001)(44976005)(46102001)(31966008)(77982001)(74662001)(48376002)(74502001)(76176999)(88136002)(92566001)(85852003)(83072002)(89996001)(87936001)(4396001)(87286001)(50226001)(77156001)(93916002)(81342001)(81542001)(99396002)(92726001)(11926002)(62966002)(76482001)(33646001)(80022001)(79102001)(20776003)(47776003)(50466002)(42262001); DIR:OUT; SFP:1101; SCL:1; SRVR:BLUPR03MB423; H:az84smr01.freescale.net; FPR:F08ED660.31248898.FE4136F.9CB6EE71.20175; MLV:sfv; PTR:gate-az5.freescale.com; MX:1; A:1; LANG:en; MIME-Version: 1.0 X-Forefront-PRVS: 01901B3451 Received-SPF: None (: freescale.com does not designate permitted sender hosts) X-OriginatorOrg: freescale.com Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Check the "spi-nor,ddr-quad-read-dummy" DT property to get the dummy cycles for DDR quad read. Signed-off-by: Huang Shijie --- drivers/mtd/spi-nor/fsl-quadspi.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/mtd/spi-nor/fsl-quadspi.c b/drivers/mtd/spi-nor/fsl-quadspi.c index 8d659a2..15bdeb9 100644 --- a/drivers/mtd/spi-nor/fsl-quadspi.c +++ b/drivers/mtd/spi-nor/fsl-quadspi.c @@ -883,6 +883,7 @@ static int fsl_qspi_probe(struct platform_device *pdev) for_each_available_child_of_node(dev->of_node, np) { const struct spi_device_id *id; char modalias[40]; + u32 dummy = 0; /* skip the holes */ if (!has_second_chip) @@ -918,6 +919,12 @@ static int fsl_qspi_probe(struct platform_device *pdev) if (ret < 0) goto map_failed; + /* Set the dummy cycles for the DDR Quad Read */ + ret = of_property_read_u32(np, "spi-nor,ddr-quad-read-dummy", + &dummy); + if (!ret && dummy > 0 && dummy < 8) + nor->read_dummy = dummy; + /* set the chip address for READID */ fsl_qspi_set_base_addr(q, nor);