diff options
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/mmc_spi.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index 87e211df68ac..ad9e0e213f64 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -1204,10 +1204,12 @@ static int mmc_spi_probe(struct spi_device *spi) /* MMC and SD specs only seem to care that sampling is on the * rising edge ... meaning SPI modes 0 or 3. So either SPI mode - * should be legit. We'll use mode 0 since it seems to be a - * bit less troublesome on some hardware ... unclear why. + * should be legit. We'll use mode 0 since the steady state is 0, + * which is appropriate for hotplugging, unless the platform data + * specify mode 3 (if hardware is not compatible to mode 0). */ - spi->mode = SPI_MODE_0; + if (spi->mode != SPI_MODE_3) + spi->mode = SPI_MODE_0; spi->bits_per_word = 8; status = spi_setup(spi); |