[PATCH 1/6] ARM: dts: am335x-phycore-som: Update NAND partition table

On Fri, Jan 6, 2017 at 10:02 AM, Tony Lindgren [off-list ref] wrote:

* Teresa Remmet [off-list ref] [170106 01:28]:

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Hello Brian,

Am Donnerstag, den 05.01.2017, 09:56 -0800 schrieb Brian Norris:

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On Thu, Jan 05, 2017 at 09:18:45AM -0800, Tony Lindgren wrote:

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* Tony Lindgren [off-list ref] [170105 07:37]:

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* Teresa Remmet [off-list ref] [170105 06:57]:

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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!

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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.

Tony - I tested leaving the partition info as-is with the updates from
the bootloader and it works.  Would you prefer that I match Brian and
remove the partition table completely, or should I just leave my board
alone?

I am good either way.

Regards,

Tony

adam