From: Scott Wood <scottwood@freescale.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [U-Boot,v3,1/2] Optimized nand_read_buf for kirkwood
Date: Mon, 19 Aug 2013 18:29:14 -0500 [thread overview]
Message-ID: <20130819232914.GA5159@home.buserror.net> (raw)
In-Reply-To: <1372271126-2642-2-git-send-email-phil.sutter@viprinet.com>
On Wed, Jun 26, 2013 at 08:25:25PM +0200, Phil Sutter wrote:
> The basic idea is taken from the linux-kernel, but further optimized.
>
> First align the buffer to 8 bytes, then use ldrd/strd to read and store
> in 8 byte quantities, then do the final bytes.
>
> Tested using: 'date ; nand read.raw 0xE00000 0x0 0x10000 ; date'.
> Without this patch, NAND read of 132MB took 49s (~2.69MB/s). With this
> patch in place, reading the same amount of data was done in 27s
> (~4.89MB/s). So read performance is increased by ~80%!
>
> Signed-off-by: Nico Erfurth <ne@erfurth.eu>
> Tested-by: Phil Sutter <phil.sutter@viprinet.com>
> Cc: Prafulla Wadaskar <prafulla@marvell.com>
Missing your signoff, and if Nico was the main author then there should
be a From: line indicating that.
-Scott
next prev parent reply other threads:[~2013-08-19 23:29 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-21 12:59 [U-Boot] [PATCH 1/4] Optimized nand_read_buf for kirkwood Phil Sutter
2012-11-21 12:59 ` [U-Boot] [PATCH 2/4] env_nand.c: support falling back to redundant env when writing Phil Sutter
2012-11-27 22:04 ` Scott Wood
2012-11-28 21:06 ` Phil Sutter
2012-12-06 18:18 ` Scott Wood
2012-12-07 11:53 ` Phil Sutter
2012-12-07 16:58 ` Phil Sutter
2012-12-07 17:38 ` Scott Wood
2012-12-10 13:41 ` Phil Sutter
2012-12-11 23:12 ` Scott Wood
2012-12-20 21:28 ` Phil Sutter
2012-12-20 21:41 ` Scott Wood
2012-12-21 10:34 ` Phil Sutter
2012-12-22 2:29 ` Scott Wood
2012-11-21 12:59 ` [U-Boot] [PATCH 3/4] env_nand.c: do warn only if really no valid environment could be loaded Phil Sutter
2012-11-27 22:06 ` Scott Wood
2012-11-27 22:07 ` Scott Wood
2013-02-20 0:33 ` Scott Wood
2012-11-21 12:59 ` [U-Boot] [PATCH 4/4] common/env_nand.c: calculate crc only when readenv was OK Phil Sutter
2012-11-26 3:46 ` [U-Boot] [PATCH 1/4] Optimized nand_read_buf for kirkwood Prafulla Wadaskar
2012-11-26 10:29 ` Phil Sutter
2012-11-26 10:33 ` Phil Sutter
2012-11-26 23:39 ` Scott Wood
2012-12-20 6:44 ` Prafulla Wadaskar
2012-12-20 10:55 ` Phil Sutter
2013-02-21 17:21 ` [U-Boot] Version 2 of Kirkwood and env_nand improvements Phil Sutter
2013-02-21 17:21 ` [U-Boot] [PATCHv2 1/4] Optimized nand_read_buf for kirkwood (V3) Phil Sutter
2013-02-23 1:26 ` Scott Wood
2013-02-21 17:21 ` [U-Boot] [PATCHv2 2/4] env_nand.c: support falling back to redundant env when writing Phil Sutter
2013-02-23 1:32 ` Scott Wood
2013-02-21 17:21 ` [U-Boot] [PATCHv2 3/4] env_nand.c: clarify log messages when env reading fails Phil Sutter
2013-02-23 1:59 ` Scott Wood
2013-02-25 9:39 ` Phil Sutter
2013-02-25 22:40 ` Scott Wood
2013-02-21 17:21 ` [U-Boot] [PATCHv2 4/4] common/env_nand.c: calculate crc only when readenv was OK Phil Sutter
2013-02-23 2:00 ` Scott Wood
2013-06-26 18:25 ` [U-Boot] Version 3 of Kirkwood and env_nand improvements Phil Sutter
2013-06-26 18:25 ` [U-Boot] [PATCH v3 1/2] Optimized nand_read_buf for kirkwood Phil Sutter
2013-06-27 10:02 ` Albert ARIBAUD
2013-08-19 23:29 ` Scott Wood [this message]
2013-06-26 18:25 ` [U-Boot] [PATCH v3 2/2] env_nand.c: support falling back to redundant env when writing Phil Sutter
2013-07-17 22:25 ` Scott Wood
2013-07-19 10:09 ` Phil Sutter
2013-07-19 10:20 ` [U-Boot] [PATCH] " Phil Sutter
2013-07-19 10:30 ` Phil Sutter
2013-08-22 22:50 ` [U-Boot] " Scott Wood
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