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orion_spi: handle 88F6183 erratum

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Add support to orion_spi for the 88F6183 ARM SoC by adding code to work
around a 6183-specific erratum.

Signed-off-by: Lennert Buytenhek <buytenh@marvell.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Lennert Buytenhek 2008-10-15 22:02:44 -07:00 committed by Linus Torvalds
parent f1f640a9c1
commit 2bec19feab
2 changed files with 6 additions and 0 deletions
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5
drivers/spi/orion_spi.c
View File

@ -364,6 +364,11 @@ static int orion_spi_setup(struct spi_device *spi)
return -EINVAL;
}
/* Fix ac timing if required. */
if (orion_spi->spi_info->enable_clock_fix)
orion_spi_setbits(orion_spi, ORION_SPI_IF_CONFIG_REG,
(1 << 14));
if (spi->bits_per_word == 0)
spi->bits_per_word = 8;

1
include/linux/spi/orion_spi.h
View File

@ -11,6 +11,7 @@
struct orion_spi_info {
u32 tclk; /* no <linux/clk.h> support yet */
u32 enable_clock_fix;
};