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3 Commits

Author SHA1 Message Date
Sascha Hauer 8895e7512e nor m25p80: implement fast read 
The fast read command is needed for spi speeds > 25MHz, so use it for
higher speeds.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2012-07-31 16:31:17 +02:00
Sascha Hauer 85bdbb1c52 nor m25p80: optimize erase 
The driver currently erases blocks in 4kb chunks if 4kb support is
available. This patch uses bigger blocks for suitable areas to speed
up erasing areas.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2012-07-31 15:53:11 +02:00
Franck Jullien e705ccd130 nor: Add SPI flash driver 
This patch adds the m25p80 driver. It has been ported from
Linux. MTD code has been removed. It has been tested with
a m25p40 chip and the Altera SPI master driver.

Signed-off-by: Franck Jullien <franck.jullien@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
 2011-08-24 18:44:31 +02:00