From: computersforpeace@gmail.com (Brian Norris)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v12 2/5] mtd: nand: vf610_nfc: add hardware BCH-ECC support
Date: Tue, 29 Sep 2015 13:57:27 -0700 [thread overview]
Message-ID: <20150929205727.GP31505@google.com> (raw)
In-Reply-To: <1441242397-870-3-git-send-email-stefan@agner.ch>
Pushed this patch to l2-mtd.git, as it looks pretty much good. Although,
I'd like raw read support...
On Wed, Sep 02, 2015 at 06:06:34PM -0700, Stefan Agner wrote:
> This adds hardware ECC support using the BCH encoder in the NFC IP.
> The ECC encoder supports up to 32-bit correction by using 60 error
> correction bytes. There is no sub-page ECC step, ECC is calculated
> always accross the whole page (up to 2k pages).
>
> Limitations:
> - HW ECC: Only 2K page with 64+ OOB.
> - HW ECC: Only 24 and 32-bit error correction implemented.
>
> Raw writes have been tested using the generic nand_write_page_raw
> implementation. However, raw reads are currently not possible
> because the controller need to know whether we are going to use
> the ECC mode already at NAND_CMD_READ0 command time. At this point
> we do not have the information whether it is a raw read or a
> regular read at driver level...
Hmm, can you get this in ecc.read_page_raw()?
next prev parent reply other threads:[~2015-09-29 20:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-03 1:06 [PATCH v12 0/5] mtd: nand: vf610_nfc: Freescale NFC for VF610 Stefan Agner
2015-09-03 1:06 ` [PATCH v12 1/5] mtd: nand: vf610_nfc: Freescale NFC for VF610, MPC5125 and others Stefan Agner
2015-09-04 4:10 ` Alexey Klimov
2015-09-29 20:55 ` Brian Norris
2015-09-03 1:06 ` [PATCH v12 2/5] mtd: nand: vf610_nfc: add hardware BCH-ECC support Stefan Agner
2015-09-29 20:57 ` Brian Norris [this message]
2015-10-07 23:34 ` Stefan Agner
2015-09-03 1:06 ` [PATCH v12 3/5] mtd: nand: vf610_nfc: add device tree bindings Stefan Agner
2015-09-29 20:59 ` Brian Norris
2015-09-03 1:06 ` [PATCH v12 4/5] ARM: dts: vf610twr: add NAND flash controller peripherial Stefan Agner
2015-09-03 1:06 ` [PATCH v12 5/5] ARM: dts: vf-colibri: enable NAND flash controller Stefan Agner
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