From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.grid-net.com ([97.65.115.2]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1STZk3-0005GT-9Z for linux-mtd@lists.infradead.org; Sun, 13 May 2012 14:25:47 +0000 Message-ID: <4FAFC468.8080701@grid-net.com> Date: Sun, 13 May 2012 07:25:44 -0700 From: Subodh Nijsure MIME-Version: 1.0 To: Subject: How common is OTP support in NAND flash? Content-Type: text/plain; charset="ISO-8859-1"; format=flowed Content-Transfer-Encoding: 7bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , I see that MTD char drivers have support for programming the OTP pages on NAND flash, some questions regarding that. Do most flash chip vendors support on-flash OTP pages or if one develops product that depends on using data from flash OTP, one would be locked into that specific vendors. And does anybody know if these OTP pages are also subjected to bit-flipping or one shouldn't have to worry about that for OTP pages? -Subodh