Difference in MTD driver between kernel 2.6.35 and latest mainline?

[woutervh]

I'm doing tests with a mix of tools.

This contains:

- Barebox (latest version)

- Kernel (latest mainline)

- Kernel (freescale 2.6.35 maintain)

Situation is as follows:

I have a nand flash of 1GiB (Samsung K9K8U0D)

I write an ubi-image through ubiformat with barebox. This is perfectly usable with the latest mainline kernel.

However, when I want to use it with the freescale 2.6.35 maintain branch, I get bad CRC's while attaching.

I did, as a test, some backporting of mtd from the latest linux mainline kernel to my 2.6.35 and it also works. What and why are there differences in using the nand flash? Now I'm not really sure if I will have some instability/unreliability with my backported version.

Somebody has a clue?

[woutervh]

Because we are close to a delivery release, I really need to have a stable reliable solution for my bootloader/kernel combination.

When using the freescales 2.6.35 maintain kernel, which is the best bootloader to use for it? Which is prooved to work in respect to nand flash / ubi things?

And where to get it?

[YixingKong]

Wouter

This discussion is closed since no activity. If you still need help, please feel free to reply with an update to this discussion, or create another discussion.

Thanks,

Yixing

[YixingKong]

Wouter

Had your issue got resolved? If yes, we are going to close the discussion in 3 days. If you still need help please feel

free to contact Freescale.

Thanks,
Yixing

[fabio_estevam]

What prevents you to using the mainline kernel?

[woutervh]

I had the latest mainline kernel running, but as not everything is functional yet, and I rely on older binaries (no sources), I decided to take the maintain branch of  2.6.35 instead...

[LeonardoSandova]

Is this test can be done with u-boot? I am not a bootloader expert but I wonder why you pick Barebox as a loader.

Leo

[woutervh]

Barebox was the bootloader which looked most promising and understandable.

The coding style relies to the one of linux kernel itself and it already had good support for all imx-stuff.

The test can also be done by doing the ubiformat from within a linux with the latest kernel and trying to mount it with a system with the 2.6.35 kernel