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From: Rafael Beims <rafael.beims@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Status of fsl_elbc_nand driver and 4k page NAND / 4bit ECC
Date: Wed, 11 Apr 2012 18:28:12 -0300	[thread overview]
Message-ID: <CABXAApE3+X03NHvjavMzSKWpuWR5VBeAKJb+tWzmCCdJt42oiw@mail.gmail.com> (raw)
In-Reply-To: <CABXAApH0ffGMbC1DKPm3GGZyNO=cfzAOWmfN3VtWuUPXGwRY+Q@mail.gmail.com>

Hello,
I work with several MPC83xx boards in our company, and a while ago we were
informed that the NAND chip we used was being discontinued. The only
options for a replacement were the newer 4k page ones. Specifically, we are
using now the Micron 29F8G08ABABA (8 gigabit).

I was sweeping the repositories and this list's archives and I'm with the
impression that these chips are not supported yet. I saw some patches sent
hacking the driver to allow for the use of 4k pages.

Additionally, I'm worried about the use of the 4 bit ECC lib (BCH), as it
seems to me that the fsl_elbc_nand driver is not prepared to use a software
ECC config. Maybe I'm wrong, but it seems that the driver always uses the 1
bit HW ECC that's present in freescale's controller.

Because of this, I would like to ask for an overall status of these things.
What can I expect to be working? What are the main areas of concern?
If there is no complete implementation yet (as I saw some patches being
rejected / not merged yet), what is currently missing?
What is the area where most work is needed?

I ask all of this because we need these implementations and I'm looking for
the correct starting point for any implementation that I would need to do.

Thanks in advance for any help,
Rafael

       reply	other threads:[~2012-04-11 21:28 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CABXAApH0ffGMbC1DKPm3GGZyNO=cfzAOWmfN3VtWuUPXGwRY+Q@mail.gmail.com>
2012-04-11 21:28 ` Rafael Beims [this message]
2012-04-11 21:54   ` [U-Boot] Status of fsl_elbc_nand driver and 4k page NAND / 4bit ECC Scott Wood
     [not found]     ` <CABXAApFcrOhw0pF-w3enVqu8vY9xsEaViUpP1YujCDQeRcMRbQ@mail.gmail.com>
     [not found]       ` <4F862049.3040509@freescale.com>
2012-04-13 22:15         ` Rafael Beims
2012-04-16 21:10           ` Scott Wood
2012-05-08 20:07             ` Rafael Beims
2012-05-15 22:47               ` Scott Wood

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