Thread (22 messages) 22 messages, 5 authors, 2022-12-09

Re: [PATCH v1] Revert "ARM: dts: imx7: Fix NAND controller size-cells"

From: Francesco Dolcini <francesco@dolcini.it>
Date: 2022-12-08 13:50:08
Also in: linux-devicetree, stable

Il 8 dicembre 2022 14:21:31 CET, Marek Vasut [off-list ref] ha scritto:
On 12/8/22 11:51, Miquel Raynal wrote:
quoted
Hi Shawn,
Hi,
quoted
+ Thorsten

marex@denx.de wrote on Mon, 5 Dec 2022 17:26:53 +0100:
quoted
On 12/5/22 16:23, Francesco Dolcini wrote:
quoted
From: Francesco Dolcini <redacted>

This reverts commit 753395ea1e45c724150070b5785900b6a44bd5fb.

It introduced a boot regression on colibri-imx7, and potentially any
other i.MX7 boards with MTD partition list generated into the fdt by
U-Boot.

While the commit we are reverting here is not obviously wrong, it fixes
only a dt binding checker warning that is non-functional, while it
introduces a boot regression and there is no obvious fix ready.

Cc: stable@vger.kernel.org
Fixes: 753395ea1e45 ("ARM: dts: imx7: Fix NAND controller size-cells")
Link: https://lore.kernel.org/all/Y4dgBTGNWpM6SQXI@francesco-nb.int.toradex.com/ (local)
Link: https://lore.kernel.org/all/20221205144917.6514168a@xps-13/ (local)
Signed-off-by: Francesco Dolcini <redacted>
[...]
quoted
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
[...]
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Acked-by: Marek Vasut <marex@denx.de>
[...]

As discussed in the above links, boot is broken on imx7 Colibri boards,
this revert was the most quick and straightforward fix we agreed upon
with the hope (~ duty?) it would make it in v6.1. Any chance you could
pick this up rapidly and forward it to Linus? Or should we involve
him directly (Thorsten?).
It seems neither Francesco nor me agree that this is the right approach and rather the fix should be the two-liner change to the OF partition parser, so maybe this should not be picked ?
I think that the 2 lines change might not be good enough to properly handle the U-Boot generated OF partitions in the general case, even if it fixes my specific issue.

Given that I would do the revert as an immediate first step.

Francesco 


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