From patchwork Fri Jun 14 08:06:24 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Huang Shijie X-Patchwork-Id: 251264 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:770:15f::2]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id A7A7C2C0098 for ; Fri, 14 Jun 2013 18:33:18 +1000 (EST) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPP8-0003Xd-NM; Fri, 14 Jun 2013 08:30:43 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPOa-0001LB-CQ; Fri, 14 Jun 2013 08:30:08 +0000 Received: from co9ehsobe005.messaging.microsoft.com ([207.46.163.28] helo=co9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UnPNo-0001Dx-Di; Fri, 14 Jun 2013 08:29:22 +0000 Received: from mail182-co9-R.bigfish.com (10.236.132.241) by CO9EHSOBE011.bigfish.com (10.236.130.74) with Microsoft SMTP Server id 14.1.225.23; Fri, 14 Jun 2013 08:28:58 +0000 Received: from mail182-co9 (localhost [127.0.0.1]) by mail182-co9-R.bigfish.com (Postfix) with ESMTP id 016CBBA02C1; Fri, 14 Jun 2013 08:28:58 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h1ee6h1de0h1fdah1202h1e76h1d1ah1d2ah1fc6h1082kzz8275bhz2dh2a8h668h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1d0ch1d2eh1d3fh1dfeh1dffh1e23h1155h) Received: from mail182-co9 (localhost.localdomain [127.0.0.1]) by mail182-co9 (MessageSwitch) id 1371198535463531_2374; Fri, 14 Jun 2013 08:28:55 +0000 (UTC) Received: from CO9EHSMHS008.bigfish.com (unknown [10.236.132.244]) by mail182-co9.bigfish.com (Postfix) with ESMTP id 6E3A8D600A4; Fri, 14 Jun 2013 08:28:55 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by CO9EHSMHS008.bigfish.com (10.236.130.18) with Microsoft SMTP Server (TLS) id 14.1.225.23; Fri, 14 Jun 2013 08:28:55 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-001.039d.mgd.msft.net (10.84.1.13) with Microsoft SMTP Server (TLS) id 14.2.328.11; Fri, 14 Jun 2013 08:28:54 +0000 Received: from shlinux2.ap.freescale.net (shlinux2.ap.freescale.net [10.192.224.44]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id r5E8SelI024613; Fri, 14 Jun 2013 01:28:52 -0700 From: Huang Shijie To: Subject: [PATCH 3/4] mtd: gpmi: scan two nand chips Date: Fri, 14 Jun 2013 16:06:24 +0800 Message-ID: <1371197185-27491-4-git-send-email-b32955@freescale.com> X-Mailer: git-send-email 1.7.1 In-Reply-To: <1371197185-27491-1-git-send-email-b32955@freescale.com> References: <1371197185-27491-1-git-send-email-b32955@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130614_042920_672885_CACD0AF0 X-CRM114-Status: GOOD ( 11.25 ) X-Spam-Score: -4.2 (----) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-4.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [207.46.163.28 listed in list.dnswl.org] -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: Huang Shijie , linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, dedekind1@gmail.com X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Some nand chip has two DIEs in a single chip, such as Micron MT29F32G08QAA. Each die has its own chip select pin, so this chip acts as two nand chips. If we only scan one chip, we may find that we only get 2G for this chip, but in actually, this chip's size is 4G. So scan two chips by default. Signed-off-by: Huang Shijie --- drivers/mtd/nand/gpmi-nand/gpmi-nand.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c index 036e5e4..bb8af93 100644 --- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c +++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c @@ -1551,7 +1551,7 @@ static int gpmi_nfc_init(struct gpmi_nand_data *this) if (ret) goto err_out; - ret = nand_scan(mtd, 1); + ret = nand_scan(mtd, 2); if (ret) { pr_err("Chip scan failed\n"); goto err_out;