From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekon Gupta Subject: [PATCH v4 0/4] mtd:nand:omap2: clean-up of supported ECC schemes Date: Tue, 2 Jul 2013 17:02:33 +0530 Message-ID: <1372764757-29511-1-git-send-email-pekon@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Sender: linux-omap-owner@vger.kernel.org To: tony@atomide.com, artem.bityutskiy@linux.intel.com, benoit.cousson@linaro.org, olof@lixom.net Cc: arnd@arndb.de, avinashphilipk@gmail.com, balbi@ti.com, linux-mtd@lists.infradead.org, linux-omap@vger.kernel.org, jp.francois@cynove.com, devicetree-discuss@lists.ozlabs.org, sfr@canb.auug.org.au, Pekon Gupta List-Id: devicetree@vger.kernel.org (+ CC: devicetree-discuss@lists.ozlabs.org) Changes v3 -> v4 - [Patch 1/3] removed MTD_NAND_OMAP_BCH8 & MTD_NAND_OMAP_BCH4 from nand/Kconfig ECC scheme selectable via nand DT (nand-ecc-opt). - [*] rebased for l2-mtd.git (with Author Name fixed) Changes v2 -> v3 - PATCH-1: re-arranged code to remove redundancy, added NAND_BUSWIDTH_AUTO - PATCH-2: updated nand-ecc-opt DT mapping and Documentation - PATCH-3: code-cleaning + changes to match PATCH-1 - PATCH-4 update DT attribute for ti,nand-ecc-opt - received feedback to keep DT mapping independent of linuxism - PATCH-4: : ARM: dts: AM33xx: updated default ECC scheme in nand-ecc-opt - independent patch for AM335x-evm.dts update based on PATCH-2 Changes v1 -> v2 added [PATCH 3/4] and [PATCH 4/4] Patches in this series: [PATCH 1/4]: clean-up and optimization for supported ECC schemes. [PATCH 2/4]: add separate DT options each supported ECC scheme. [PATCH 3/4]: update BCH4 ECC implementation (using ELM or using lib/bch.h) [PATCH 4/4]: ARM: dts: AM33xx: updated default ECC scheme in nand-ecc-opt After this patch series, omap2-nand driver will supports following ECC schemes: +---------------------------------------+---------------+---------------+ | ECC scheme |ECC calculation|Error detection| +---------------------------------------+---------------+---------------+ |OMAP_ECC_HAMMING_CODE_DEFAULT |S/W |S/W | |OMAP_ECC_HAMMING_CODE_HW |H/W (GPMC) |S/W | |OMAP_ECC_HAMMING_CODE_HW_ROMCODE |H/W (GPMC) |S/W | +---------------------------------------+---------------+---------------+ |OMAP_ECC_BCH4_CODE_HW_DETECTION_SW |H/W (GPMC) |S/W (lib/bch.h)| |OMAP_ECC_BCH4_CODE_HW |H/W (GPMC) |H/W (ELM) | +---------------------------------------+---------------+---------------+ |OMAP_ECC_BCH8_CODE_HW_DETECTION_SW |H/W (GPMC) |S/W (lib/bch.h)| |OMAP_ECC_BCH8_CODE_HW |H/W (GPMC) |H/W (ELM) | +---------------------------------------+---------------+---------------+ - Selection of OMAP_ECC_BCHx_CODE_HW_DETECTION_SW requires, Kconfig: CONFIG_MTD_NAND_ECC_BCH: enables S/W based BCH ECC algorithm. - Selection of OMAP_ECC_BCHx_CODE_HW requires, Kconfig: CONFIG_MTD_NAND_OMAP_BCH: enables ELM H/W module. Pekon Gupta (4): mtd:nand:omap2: clean-up BCHx_HW and BCHx_SW ECC configurations in device_probe ARM: OMAP2+: cleaned-up DT support of various ECC schemes mtd:nand:omap2: updated support for BCH4 ECC scheme ARM: dts: AM33xx: updated default ECC scheme in nand-ecc-opt .../devicetree/bindings/mtd/gpmc-nand.txt | 65 ++- arch/arm/boot/dts/am335x-evm.dts | 2 +- arch/arm/mach-omap2/gpmc.c | 14 +- drivers/mtd/nand/Kconfig | 30 +- drivers/mtd/nand/omap2.c | 481 ++++++++++----------- include/linux/platform_data/elm.h | 4 + include/linux/platform_data/mtd-nand-omap2.h | 22 +- 7 files changed, 308 insertions(+), 310 deletions(-) -- 1.8.1