u-boot/drivers/spi
Delio Brignoli 2391174048 DaVinci: Improve DaVinci SPI speed.
I have updated this patch based on the comments [1] by Wolfgang Denk and
removed unused variables.
[1][http://lists.denx.de/pipermail/u-boot/2010-May/071728.html]

Reduce the number of reads per byte transferred on the BUF register from 2 to 1 and
take advantage of the TX buffer in the SPI module. On LogicPD OMAP-L138 EVM,
SPI read throughput goes up from ~0.8Mbyte/s to ~1.3Mbyte/s. Tested with a 2Mbyte image file.
Remove unused variables in the spi_xfer() function.

Signed-off-by: Delio Brignoli <dbrignoli@audioscience.com>
Tested-by: Ben Gardiner <bengardiner@nanometrics.ca>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
2010-06-07 17:21:25 -04:00
..
altera_spi.c spi: add altera spi controller support 2010-05-28 10:56:03 -04:00
atmel_dataflash_spi.c convert common files to new SoC access 2010-02-12 12:31:55 -06:00
atmel_spi.c atmel_spi: Driver for the Atmel SPI controller 2008-06-03 20:30:05 +02:00
atmel_spi.h atmel_spi: Driver for the Atmel SPI controller 2008-06-03 20:30:05 +02:00
bfin_spi.c Blackfin: bfin_spi: round up clock divider 2010-01-17 09:17:27 -05:00
cf_spi.c Coldfire: Consolidate DSPI driver 2009-07-14 09:46:09 -05:00
davinci_spi.c DaVinci: Improve DaVinci SPI speed. 2010-06-07 17:21:25 -04:00
davinci_spi.h TI DaVinci: Driver for the davinci SPI controller 2010-02-12 12:31:53 -06:00
kirkwood_spi.c spi: Add Marvell Kirkwood SPI driver 2009-06-26 00:59:09 +02:00
Makefile spi: add altera spi controller support 2010-05-28 10:56:03 -04:00
mpc8xxx_spi.c Move arch/ppc to arch/powerpc 2010-04-21 23:42:38 +02:00
mpc52xx_spi.c mpc52xx: Add SPI driver. 2009-06-14 23:01:38 +02:00
mxc_spi.c SPI: added support for MX51 to mxc_spi 2010-05-05 09:48:41 +02:00
soft_spi.c rename CFG_ macros to CONFIG_SYS 2008-10-18 21:54:03 +02:00