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From: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
To: Teresa Remmet <t.remmet-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>
Cc: "Brian Norris"
	<briannorris-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>,
	"Mark Rutland" <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Brian Norris"
	<computersforpeace-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	"Rob Herring" <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
	linux-mtd-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	"Benoît Cousson"
	<bcousson-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>,
	linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	"Adam Ford" <aford173-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [PATCH 1/6] ARM: dts: am335x-phycore-som: Update NAND partition table
Date: Fri, 6 Jan 2017 08:02:23 -0800	[thread overview]
Message-ID: <20170106160222.GC2630@atomide.com> (raw)
In-Reply-To: <1483694849.3634.6.camel-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>

* Teresa Remmet <t.remmet-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org> [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 <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org> [170105 07:37]:
> > > > 
> > > > * Teresa Remmet <t.remmet-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org> [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
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  parent reply	other threads:[~2017-01-06 16:02 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-01-05 14:50 [PATCH 0/6] ARM: dts: phyBOARD-WEGA-AM335x updates Teresa Remmet
2017-01-05 14:50 ` [PATCH 2/6] ARM: dts: am335x-phycore-som: Update compatible string for spi nor Teresa Remmet
2017-01-05 14:50 ` [PATCH 3/6] ARM: dts: am335x-phycore-som: Add i2c temp sensor Teresa Remmet
     [not found] ` <1483627851-17996-1-git-send-email-t.remmet-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>
2017-01-05 14:50   ` [PATCH 1/6] ARM: dts: am335x-phycore-som: Update NAND partition table Teresa Remmet
     [not found]     ` <1483627851-17996-2-git-send-email-t.remmet-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>
2017-01-05 15:36       ` Tony Lindgren
2017-01-05 17:18         ` Tony Lindgren
2017-01-05 17:56           ` Brian Norris
2017-01-06  9:27             ` Teresa Remmet
     [not found]               ` <1483694849.3634.6.camel-guT5V/WYfQezQB+pC5nmwQ@public.gmane.org>
2017-01-06 16:02                 ` Tony Lindgren [this message]
     [not found]                   ` <20170106160222.GC2630-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
2017-01-06 16:05                     ` Adam Ford
     [not found]                       ` <CAHCN7xL2n0qsg61i85o7DczanMH1E=HWhNvqUtTH9UhEVBvd8g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-01-06 16:14                         ` Tony Lindgren
2017-01-06 18:20                           ` Brian Norris
     [not found]                             ` <20170106182052.GA127120-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2017-01-06 18:43                               ` Tony Lindgren
     [not found]             ` <20170105175619.GA56877-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org>
2017-01-06 17:39               ` Ladislav Michl
2017-01-05 14:50   ` [PATCH 4/6] ARM: dts: am335x-wega: Set USB0 mode to otg Teresa Remmet
2017-01-05 14:50 ` [PATCH 5/6] ARM: dts: am335x-phycore-som: Update ethernet phy node Teresa Remmet
2017-01-05 14:50 ` [PATCH 6/6] ARM: dts: am335x-wega: " Teresa Remmet

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