adulau/aha
1
0
Fork 0
mirror of https://github.com/adulau/aha.git synced 2024-12-28 11:46:19 +00:00
Code Issues Projects Releases Packages Wiki Activity

mtd: m25p80: disable SST software protection bits by default

Browse source 
The SST SPI flashes is like Atmel SPI flashes in that the software
protection bits are set by default at power up, so clear them at init
time.

Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Graf Yang 2009-09-24 15:46:22 -04:00 committed by David Woodhouse
parent de19d02b73
commit ea60658a08
1 changed files with 4 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/mtd/devices/m25p80.c
View file

@ -775,11 +775,12 @@ static int __devinit m25p_probe(struct spi_device *spi)
dev_set_drvdata(&spi->dev, flash);
/*
* Atmel serial flash tend to power up
* with the software protection bits set
* Atmel and SST serial flash tend to power
* up with the software protection bits set
*/
if (info->jedec_id >> 16 == 0x1f) {
if (info->jedec_id >> 16 == 0x1f ||
info->jedec_id >> 16 == 0xbf) {
write_enable(flash);
write_sr(flash, 0);
}