diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/spi/omap3_spi.c | 23 |
2 files changed, 11 insertions, 14 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index f14e28f545..c279c2160f 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -40,7 +40,7 @@ config DRIVER_SPI_MXS config DRIVER_SPI_OMAP3 bool "OMAP3 McSPI Master driver" - depends on ARCH_OMAP3 + depends on ARCH_OMAP3 || ARCH_AM33XX endif diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c index e6581dfd32..5c8cc8882a 100644 --- a/drivers/spi/omap3_spi.c +++ b/drivers/spi/omap3_spi.c @@ -325,17 +325,6 @@ static int omap3_spi_transfer(struct spi_device *spi, struct spi_message *mesg) static int omap3_spi_setup(struct spi_device *spi) { - struct spi_master *master = spi->master; - - if (((master->bus_num == 1) && (spi->chip_select > 3)) || - ((master->bus_num == 2) && (spi->chip_select > 1)) || - ((master->bus_num == 3) && (spi->chip_select > 1)) || - ((master->bus_num == 4) && (spi->chip_select > 0))) { - printf("SPI error: unsupported chip select %i \ - on bus %i\n", spi->chip_select, master->bus_num); - return -EINVAL; - } - if (spi->max_speed_hz > OMAP3_MCSPI_MAX_FREQ) { printf("SPI error: unsupported frequency %i Hz. \ Max frequency is 48 Mhz\n", spi->max_speed_hz); @@ -368,16 +357,24 @@ static int omap3_spi_probe(struct device_d *dev) * McSPI3 has 2 CS (bus 3, cs 0 - 1) * McSPI4 has 1 CS (bus 4, cs 0) * + * AM335x McSPI has 2 busses with 2 chip selects: + * McSPI0 has 2 CS (bus 0, cs 0 - 1) + * McSPI1 has 2 CS (bus 1, cs 0 - 1) + * * The board code has to make sure that it does not use * invalid buses or chip selects. */ master->bus_num = dev->id; - master->num_chipselect = 4; + + if (IS_ENABLED(CONFIG_ARCH_OMAP3)) + master->num_chipselect = 4; + else + master->num_chipselect = 2; master->setup = omap3_spi_setup; master->transfer = omap3_spi_transfer; - omap3_master->regs = dev_request_mem_region(dev, 0);; + omap3_master->regs = dev_request_mem_region(dev, 0); spi_reset(master); |