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| author | Peter Korsgaard <peter.korsgaard@barco.com> | 2012-10-17 09:20:46 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2012-10-25 11:30:50 -0700 |
| commit | 22cbeed454087ffa6ae6e56880bfff125497619b (patch) | |
| tree | acb585041b9fde670a748f1763c2c398666248c8 | |
| parent | 8f1fae26a7fb4c0c2897f2f086fe8a3e1da58a9a (diff) | |
| download | u-boot-imx-22cbeed454087ffa6ae6e56880bfff125497619b.zip u-boot-imx-22cbeed454087ffa6ae6e56880bfff125497619b.tar.gz u-boot-imx-22cbeed454087ffa6ae6e56880bfff125497619b.tar.bz2 | |
omap3_spi: introduce CONFIG_OMAP3_SPI_D0_D1_SWAPPED
D0/D1 Swapped or not is a board property, not anything specific to
the am33xx SoC, so add a custom define for it.
At the same time correct the bit handling for the swapped mode
(DPE0 should be cleared and SI/DPE1 set).
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
| -rw-r--r-- | drivers/spi/omap3_spi.c | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index e40a632..6791a7e 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -173,14 +173,13 @@ int spi_claim_bus(struct spi_slave *slave) /* standard 4-wire master mode: SCK, MOSI/out, MISO/in, nCS * REVISIT: this controller could support SPI_3WIRE mode. */ -#ifdef CONFIG_AM33XX +#ifdef CONFIG_OMAP3_SPI_D0_D1_SWAPPED /* - * The reference design on AM33xx has D0 and D1 wired up opposite - * of how it has been done on previous platforms. We assume that - * custom hardware will also follow this convention. + * Some boards have D0 wired as MOSI / D1 as MISO instead of + * The normal D0 as MISO / D1 as MOSI. */ - conf &= OMAP3_MCSPI_CHCONF_DPE0; - conf |= ~(OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1); + conf &= ~OMAP3_MCSPI_CHCONF_DPE0; + conf |= OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1; #else conf &= ~(OMAP3_MCSPI_CHCONF_IS|OMAP3_MCSPI_CHCONF_DPE1); conf |= OMAP3_MCSPI_CHCONF_DPE0; |