From patchwork Sun Feb 14 20:48:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 582597 X-Patchwork-Delegate: jagannadh.teki@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 0CCD9140321 for ; Mon, 15 Feb 2016 07:59:13 +1100 (AEDT) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 46F76A7698; Sun, 14 Feb 2016 21:55:03 +0100 (CET) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 3rtrdNXroRvN; Sun, 14 Feb 2016 21:55:03 +0100 (CET) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 21A7FA76F0; Sun, 14 Feb 2016 21:54:07 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id B3C31A7739 for ; Sun, 14 Feb 2016 21:54:01 +0100 (CET) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id qzjhCJ62-Dvz for ; Sun, 14 Feb 2016 21:54:01 +0100 (CET) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from mail-pf0-f180.google.com (mail-pf0-f180.google.com [209.85.192.180]) by theia.denx.de (Postfix) with ESMTPS id 03E1EA7628 for ; Sun, 14 Feb 2016 21:53:10 +0100 (CET) Received: by mail-pf0-f180.google.com with SMTP id e127so75988441pfe.3 for ; Sun, 14 Feb 2016 12:53:10 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=rA9z6yxUQN2+nkS6KceKDTNurboweakseiAPPLdZgTw=; b=QyeNopYiHCHS0LQSc/FPwavEQQTN9HhPYr5fpbs6s5S5iF/qILz2ZMUlxWNtBYKiUi UQKdqOCGsvQIENcOJiSyLT1nSvl1slBhhhTwOxv0ROCIpP1ZGlWeNXXPRo1iUzbEB2kS NwrAn71yutAfn5lbaBG/Woc3FBZRlP/q7AzOJq8Msow0ieN0iDSkMKZE9qk3dE5+gaVn CbGFbzEnZFSJNkpHDlzOJ7UfSaoh2T3Rir24dCEK7xhcuS696C5B1x0IZZZmC2Zy5ZpI YylREbGa6Ax//+tT/1HSHTT42AlADk9eNW1ou5AmKezV3W8qbpDB5ieutBeALybrmUGw bwrQ== X-Gm-Message-State: AG10YOTbaGYwRIgPOMRPTia4Z3WrM7NuLtJirPFLeDGGLCHAFIuw9HxCD/Kd3idQDoN79Q== X-Received: by 10.98.71.92 with SMTP id u89mr18620896pfa.122.1455483188827; Sun, 14 Feb 2016 12:53:08 -0800 (PST) Received: from localhost.localdomain ([123.236.183.254]) by smtp.gmail.com with ESMTPSA id cq9sm11423890pac.26.2016.02.14.12.53.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sun, 14 Feb 2016 12:53:07 -0800 (PST) From: Jagan Teki To: u-boot@lists.denx.de Date: Mon, 15 Feb 2016 02:18:45 +0530 Message-Id: <1455482955-19053-46-git-send-email-jteki@openedev.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1455482955-19053-1-git-send-email-jteki@openedev.com> References: <1455482955-19053-1-git-send-email-jteki@openedev.com> Cc: Jagan Teki , Haikun Wang Subject: [U-Boot] [PATCH v6 46/76] mtd: spi-nor: Add kconfig MTD_DATAFLASH_WRITE_VERIFY X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.15 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" Added kconfig entry for MTD_DATAFLASH_WRITE_VERIFY Cc: Bin Meng Cc: Simon Glass Cc: York Sun Cc: Haikun Wang Signed-off-by: Jagan Teki --- drivers/mtd/spi-nor/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/drivers/mtd/spi-nor/Kconfig b/drivers/mtd/spi-nor/Kconfig index 15e8432..f039a9d 100644 --- a/drivers/mtd/spi-nor/Kconfig +++ b/drivers/mtd/spi-nor/Kconfig @@ -112,3 +112,13 @@ config MTD_DATAFLASH protocols during enumeration. If unsure, say N + +config MTD_DATAFLASH_WRITE_VERIFY + bool "Verify DataFlash page writes" + depends on MTD_DATAFLASH + help + This adds an extra check when data is written to the flash. + It may help if you are verifying chip setup (timings etc) on + your board. There is a rare possibility that even though the + device thinks the write was successful, a bit could have been + flipped accidentally due to device wear or something else.