u-boot/drivers/mtd
Daniel Mack c316f577b4 mtd: OMAP: Enable GPMC prefetch mode
Enable GPMC's prefetch feature for NAND access. This speeds up NAND read
access a lot by pre-fetching contents in the background and reading them
through the FIFO address.

The current implementation has two limitations:

 a) it only works in 8-bit mode
 b) it only supports read access

Both is easily fixable by someone who has hardware to implement it.

Note that U-Boot code uses non word-aligned buffers to read data into, and
request read lengths that are not multiples of 4, so both partial buffers
(head and tail) have to be addressed.

Tested on AM335x hardware.

Tested-by: Guido Martínez <guido@vanguardiasur.com.ar>
Reviewed-by: Guido Martínez <guido@vanguardiasur.com.ar>
Signed-off-by: Daniel Mack <zonque@gmail.com>
[trini: Make apply again, use 'cs' fix pointed out by Guido]
Signed-off-by: Tom Rini <trini@ti.com>
2015-01-13 11:51:23 -05:00
..
nand mtd: OMAP: Enable GPMC prefetch mode 2015-01-13 11:51:23 -05:00
onenand mtd, ubi, ubifs: resync with Linux-3.14 2014-08-25 19:25:55 -04:00
spi sf: sf_params: Add S25FL164K flash identifier info 2014-12-18 18:48:30 +05:30
ubi kbuild: force to define __UBOOT__ in all the C sources 2014-09-16 12:23:56 -04:00
at45.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
cfi_flash.c cti_flash.c: use __weak when requested for flash_(read|write){8,16,32,64} 2014-10-25 06:58:51 -04:00
cfi_mtd.c mtd, cfi, ubi: add missing writebufsize initialization 2014-11-19 07:54:04 +01:00
dataflash.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
ftsmc020.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00
jedec_flash.c mtd: Handle 29LV800BT 2014-11-19 08:48:41 +01:00
Kconfig mtd: denali: add Denali controller configs to Kconfig 2014-10-05 14:10:09 +09:00
Makefile drivers: mtd: convert makefiles to Kbuild style 2013-10-31 13:22:13 -04:00
mtdconcat.c kbuild: force to define __UBOOT__ in all the C sources 2014-09-16 12:23:56 -04:00
mtdcore.c mtdcore: Fix a build error with CONFIG_CMD_MTDPARTS_SPREAD 2014-09-16 12:23:59 -04:00
mtdcore.h mtd, ubi, ubifs: resync with Linux-3.14 2014-08-25 19:25:55 -04:00
mtdpart.c kbuild: force to define __UBOOT__ in all the C sources 2014-09-16 12:23:56 -04:00
mw_eeprom.c Update i386 code (sc520_cdp) 2008-09-09 11:48:53 +02:00
st_smi.c Add GPL-2.0+ SPDX-License-Identifier to source files 2013-07-24 09:44:38 -04:00