From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Wahren Subject: Re: [PATCH V4 RFC 0/3] nvmem: add ocotp support for i.MX23 and i.MX28 Date: Mon, 20 Jul 2015 08:37:01 +0200 Message-ID: <55AC970D.6090707@i2se.com> References: <1437343499-16422-1-git-send-email-stefan.wahren@i2se.com> <201507200007.30100.marex@denx.de> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <201507200007.30100.marex-ynQEQJNshbs@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Marek Vasut Cc: Srinivas Kandagatla , Maxime Ripard , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Shawn Guo , Sascha Hauer , Fabio Estevam , Sanchayan Maity , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org Hi Marek, Am 20.07.2015 um 00:07 schrieb Marek Vasut: > On Monday, July 20, 2015 at 12:04:56 AM, Stefan Wahren wrote: >> This patch series brings read-only support for the On-Chip OTP cells >> in the i.MX23 and i.MX28 processor. >> >> It has been a long time since V3 of this series [1]. The last version has >> been rejected because there was no standard interface to the OTP data. So >> this version bases on V7 of the new NVMEM framework [2] which required a >> nearly complete rewrite of the driver. >> >> [1] - >> http://lists.infradead.org/pipermail/linux-arm-kernel/2014-October/295228. >> html [2] - >> http://lists.infradead.org/pipermail/linux-arm-kernel/2015-July/355652.htm >> l > Are you sure you even want this support in kernel ? definitely. But only read-only support make sense. Please believe me, i didn't wait since last year for the NVMEM framework just for fun. > Isn't it enough to have > this in some manufacturing-time mutated bootloader to program the OTP once > and never touch it again ? No, our products uses a previous version of this patch series to set the MAC address of a network interface from OTP data. I also get some feedback from other users that they are happy about this driver. Regards Stefan > > Best regards, > Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html