From ea60658a08f8f3511a70587b27f12cd7e0ac5ae3 Mon Sep 17 00:00:00 2001 From: Graf Yang Date: Thu, 24 Sep 2009 15:46:22 -0400 Subject: [PATCH] mtd: m25p80: disable SST software protection bits by default 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 Signed-off-by: Mike Frysinger Signed-off-by: David Woodhouse --- drivers/mtd/devices/m25p80.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/devices/m25p80.c b/drivers/mtd/devices/m25p80.c index 379c316f329e..933267a7a2a6 100644 --- a/drivers/mtd/devices/m25p80.c +++ b/drivers/mtd/devices/m25p80.c @@ -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); } -- 2.20.1