From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tom Rini Date: Thu, 29 Aug 2013 11:01:55 -0400 Subject: [U-Boot] [PATCH v3 1/5] mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform In-Reply-To: <1377773805-8751-2-git-send-email-pekon@ti.com> References: <1377773805-8751-1-git-send-email-pekon@ti.com> <1377773805-8751-2-git-send-email-pekon@ti.com> Message-ID: <20130829150155.GS17898@bill-the-cat> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On Thu, Aug 29, 2013 at 04:26:41PM +0530, Pekon Gupta wrote: > BCH8_ECC scheme implemented in omap_gpmc.c driver has following favours > +-----------------------------------+-----------------+-----------------+ > |ECC Scheme | ECC Calculation | Error Detection | > +-----------------------------------+-----------------+-----------------+ > |OMAP_ECC_BCH8_CODE_HW |GPMC |ELM H/W engine | > |OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |GPMC |S/W BCH library | > +-----------------------------------+-----------------+-----------------+ > > Current implementation limits the BCH8_CODE_HW only for AM33xx device family. > (using CONFIG_AM33XX). However, other SoC families (like TI81xx) also have > ELM hardware module, and can support ECC error detection using ELM. > > This patch > - removes CONFIG_AM33xx > Thus this driver can be reused by all devices having ELM h/w engine. > - adds omap_select_ecc_scheme() > A common function to handle ecc-scheme related configurations. This > can be used both during device-probe and via user-space u-boot commads > to change ecc-scheme. > - adds CONFIG_BCH > S/W library (lib/bch.c) required by OMAP_ECC_BCH8_CODE_HW_DETECTION_SW > is enabled by CONFIG_BCH. > - adds CONFIG_SYS_NAND_ECCSCHEME (new) > user specified CONFIG to determine ecc-scheme used during boot > - adds CONFIG_SYS_NAND_ONFI_DETECTION > enable auto-detection of ONFI compliant devices > > Signed-off-by: Pekon Gupta > --- > arch/arm/include/asm/arch-am33xx/omap_gpmc.h | 48 +---- > doc/README.nand | 13 ++ > drivers/mtd/nand/omap_gpmc.c | 291 ++++++++++++++++----------- > include/configs/am335x_evm.h | 2 + > 4 files changed, 195 insertions(+), 159 deletions(-) For the am33xx related parts: Reviewed-by: Tom Rini -- Tom -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: