diff options
Diffstat (limited to 'drivers/spi/omap3_spi.c')
| -rw-r--r-- | drivers/spi/omap3_spi.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index 9346c0b5b..e40a632ca 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -86,15 +86,21 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, case 0: ds->regs = (struct mcspi *)OMAP3_MCSPI1_BASE; break; +#ifdef OMAP3_MCSPI2_BASE case 1: ds->regs = (struct mcspi *)OMAP3_MCSPI2_BASE; break; +#endif +#ifdef OMAP3_MCSPI3_BASE case 2: ds->regs = (struct mcspi *)OMAP3_MCSPI3_BASE; break; +#endif +#ifdef OMAP3_MCSPI4_BASE case 3: ds->regs = (struct mcspi *)OMAP3_MCSPI4_BASE; break; +#endif default: printf("SPI error: unsupported bus %i. \ Supported busses 0 - 3\n", bus); @@ -167,8 +173,18 @@ 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 + /* + * 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. + */ + 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; +#endif /* wordlength */ conf &= ~OMAP3_MCSPI_CHCONF_WL_MASK; |