diff options
Diffstat (limited to 'drivers/spi/spi_mpc83xx.c')
| -rw-r--r-- | drivers/spi/spi_mpc83xx.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/spi/spi_mpc83xx.c b/drivers/spi/spi_mpc83xx.c index 9cdbc12278e..bbd51bc88a6 100644 --- a/drivers/spi/spi_mpc83xx.c +++ b/drivers/spi/spi_mpc83xx.c @@ -158,6 +158,12 @@ static void mpc83xx_spi_chipselect(struct spi_device *spi, int value) if ((mpc83xx_spi->sysclk / spi->max_speed_hz) >= 64) { u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 64); + if (pm > 0x0f) { + printk(KERN_WARNING "MPC83xx SPI: SPICLK can't be less then a SYSCLK/1024!\n" + "Requested SPICLK is %d Hz. Will use %d Hz instead.\n", + spi->max_speed_hz, mpc83xx_spi->sysclk / 1024); + pm = 0x0f; + } regval |= SPMODE_PM(pm) | SPMODE_DIV16; } else { u8 pm = mpc83xx_spi->sysclk / (spi->max_speed_hz * 4); |