From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 6/7] mtd: nand: add driver for diskonchip g4 nand flash
Date: Thu, 11 Apr 2013 21:19:37 +0200 [thread overview]
Message-ID: <201304112119.37446.marex@denx.de> (raw)
In-Reply-To: <1365641128-15812-7-git-send-email-mikedunn@newsguy.com>
Dear Mike Dunn,
> This patch adds a driver for the diskonchip G4 nand flash device. It is
> based on the driver from the linux kernel.
>
> This also includes a separate SPL driver. A separate SPL driver is used
> because the device operates in a different mode (reliable mode) when
> loading a boot image, and also because the storage format of the boot
> image is different from normal data (pages are stored redundantly). The
> SPL driver basically mimics how a typical IPL reads data from the device.
> The special operating mode and storage format are used to compensate for
> the fact that the IPL does not contain the BCH ecc decoding algorithm (due
> to size constraints). Although the u-boot SPL *could* use ecc, it
> operates like an IPL for the sake of simplicity and uniformity, since the
> IPL and SPL share the task of loading the u-boot image. As a side benefit,
> the SPL driver is very small.
>
> [port from linux kernel 3.4 commit
> 570469f3bde7f71cc1ece07a18d54a05b6a8775d]
Scott, this really is your turf.
Best regards,
Marek Vasut
next prev parent reply other threads:[~2013-04-11 19:19 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-11 0:45 [U-Boot] [PATCH v2 0/7] palm treo 680 smartphone board support Mike Dunn
2013-04-11 0:45 ` [U-Boot] [PATCH v2 1/7] pxa_lcd: add the ACX544AKN lcd device Mike Dunn
2013-04-11 19:14 ` Marek Vasut
2013-04-11 0:45 ` [U-Boot] [PATCH v2 2/7] pxa_lcd: make lcd_enable() a weak pointer Mike Dunn
2013-04-11 19:15 ` Marek Vasut
2013-04-11 0:45 ` [U-Boot] [PATCH v2 3/7] pxa27x_udc: remove call to unimplemented set_GPIO_mode() Mike Dunn
2013-04-11 19:16 ` Marek Vasut
2013-04-11 0:45 ` [U-Boot] [PATCH v2 4/7] arm: bootm: call udc_disable()before booting linux Mike Dunn
2013-04-11 19:18 ` Marek Vasut
2013-04-11 0:45 ` [U-Boot] [PATCH v2 5/7] lib: import bitrev library from the linux kernel Mike Dunn
2013-04-11 19:19 ` Marek Vasut
2013-04-12 12:01 ` Mike Dunn
2013-04-12 17:28 ` Marek Vasut
2013-04-13 19:27 ` Wolfgang Denk
2013-04-11 0:45 ` [U-Boot] [PATCH v2 6/7] mtd: nand: add driver for diskonchip g4 nand flash Mike Dunn
2013-04-11 19:19 ` Marek Vasut [this message]
2013-04-12 16:29 ` Scott Wood
2013-04-11 21:00 ` Scott Wood
2013-04-12 13:36 ` Mike Dunn
2013-04-12 17:27 ` Marek Vasut
2013-04-12 17:34 ` Scott Wood
2013-04-11 0:45 ` [U-Boot] [PATCH v2 7/7] add support for palm treo 680 board Mike Dunn
2013-04-11 19:20 ` Marek Vasut
2013-04-12 12:51 ` Mike Dunn
2013-04-12 17:26 ` Marek Vasut
2013-04-14 17:44 ` [U-Boot] [PATCH v2 0/7] palm treo 680 smartphone board support Marek Vasut
2013-04-14 20:10 ` Mike Dunn
2013-04-14 20:13 ` Marek Vasut
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