[PATCH v1 0/3] fdt: Fix mtparts fixup

Tom Rini trini at konsulko.com
Fri Jan 13 11:34:11 PST 2023

On Fri, Jan 13, 2023 at 07:45:44PM +0100, Francesco Dolcini wrote:

> From: Francesco Dolcini <francesco.dolcini at toradex.com>
> Recently we had a boot regression on colibri-imx7 because of a cleanup change
> on Linux imx7.dtsi setting nand controller node #size-cells from 1 to 0.
> Because of that Linux partition parser was no longer able to properly
> parse the OF partitions leading to a boot failure, the above change was
> reverted in the meantime as an immediate workaround, but some improvement
> is required on both Linux and U-Boot.
> This change improve the U-Boot part of it, #size-cell is set to 1 when
> it has an invalid value. This has the limitation to work only with devices
> smaller than 4GiB. In general the suggestion from the Linux MTD maintainer would
> be to just deprecate using this U-Boot function and pass the MTD partitions
> from the command line, unless they are statically defined in the DTS file
> in the first place.
> This series therefore convert colibri-imx6ull and colibri-imx7 to pass the
> partition list from the command line instead of fixing up the DT.
> Link: https://lore.kernel.org/all/20221202071900.1143950-1-francesco@dolcini.it/
> Link: https://lore.kernel.org/all/Y4dgBTGNWpM6SQXI@francesco-nb.int.toradex.com/

My higher level question / concern here is, is using one of the dts
partition schemes still valid / preferred, or should everyone now have
reverted to passing via the kernel command line?  If device tree still,
is mtd/partitions/fixed-partitions.yaml the one to follow or something

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