From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Roese <sr@denx.de>
Date: Thu, 24 May 2007 12:26:25 +0200
Subject: [U-Boot-Users] [PATCH 1/2] NAND: Add support for transparent
	hardware ECC.
In-Reply-To: <20070516162713.GA6786@ld0162-tx32.am.freescale.net>
References: <20070516162713.GA6786@ld0162-tx32.am.freescale.net>
Message-ID: <200705241226.26158.sr@denx.de>
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To: u-boot@lists.denx.de

Hi Scott,

sorry for the late response.

On Wednesday 16 May 2007, Scott Wood wrote:
> Some NAND controllers (such as on the MPC831x chips) have hardware ECC,
> but can only do it during a transfer (i.e. we can't implement
> calculate_ecc()).  When NAND_ECC_TRANSPARENT is used, then ECC errors on
> reads are reported through correct_data() (with no arguments other than
> the mtd device), and on writes through waitfunc()'s return value.

I would like to know the status of this "tranparent" hardware ECC mechanism
in the Linux source. I assume that you want to integrate this support there
too, right? I couldn't find any reference to this in the current mtd/nand
implementations and/or any reference to the MPC831x.

I'm asking, since the U-Boot nand code is based on the Linux mtd codebase,
and we should try to keep features common between both source codes as
often as possible.

Thanks.

Best regards,
Stefan

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