From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: [PATCH 1/6] ARM: dts: am335x-phycore-som: Update NAND partition table Date: Fri, 6 Jan 2017 08:02:23 -0800 Message-ID: <20170106160222.GC2630@atomide.com> References: <1483627851-17996-1-git-send-email-t.remmet@phytec.de> <1483627851-17996-2-git-send-email-t.remmet@phytec.de> <20170105153637.GA4310@atomide.com> <20170105171845.GK4310@atomide.com> <20170105175619.GA56877@google.com> <1483694849.3634.6.camel@phytec.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Return-path: Content-Disposition: inline In-Reply-To: <1483694849.3634.6.camel-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Teresa Remmet Cc: Brian Norris , Mark Rutland , devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Brian Norris , Rob Herring , linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, =?utf-8?Q?Beno=C3=AEt?= Cousson , linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Adam Ford , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org List-Id: devicetree@vger.kernel.org * Teresa Remmet [170106 01:28]: > Hello Brian, > > Am Donnerstag, den 05.01.2017, 09:56 -0800 schrieb Brian Norris: > > On Thu, Jan 05, 2017 at 09:18:45AM -0800, Tony Lindgren wrote: > > > > > > * Tony Lindgren [170105 07:37]: > > > > > > > > * Teresa Remmet [170105 06:57]: > > > > > > > > > > To improve NAND safety we updated the partition layout. > > > > > Added barebox backup partition and removed kernel and oftree > > > > > partition. They are kept in ubi now. > > > > What about the users with earlier partition tables? > > > > > > > > Please read about "flag day" changes, typically they are not > > > > acceptable. > > > Adding Brian and Adam to Cc. Can you guys come up with some > > > solution on this? > > I don't have much context for this thread, and no I don't plan to > > solve > > your problems for you. But I can provide tips! > > > > > > > > I'm suggesting we leave the kernel nodes empty and let u-boot > > > populate them, so maybe you guys can discuss this on the related > > > lists. > > That's an option. I've worked with platforms that did something like > > this, and that's really one of the only ways you can handle putting > > partition information in the device tree. You're really hamstringing > > yourself when you put all the partition information in the device > > tree. > > And it's just dumb once that gets codified in the kernel source tree. > > > > In our case the bootloader does pass the partition table to the kernel. > So it gets overwritten anyway. This was just more for backup,  > if someone uses a different bootloader. But I'm fine with removing the > nand partition table completely from the kernel device tree. > Same with the SPI nor partition table. > > I will send patches for this. OK thanks! Also thank you Brian for your comments. Regards, Tony -- 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