diff options
| -rw-r--r-- | drivers/rtc/rtc-ds1343.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index d21004a68ee0..530e64442b92 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -365,9 +365,12 @@ static int ds1343_probe(struct spi_device *spi) priv->spi = spi; /* RTC DS1347 works in spi mode 3 and - * its chip select is active high + * its chip select is active high. Active high should be defined as + * "inverse polarity" as GPIO-based chip selects can be logically + * active high but inverted by the GPIO library. */ - spi->mode = SPI_MODE_3 | SPI_CS_HIGH; + spi->mode |= SPI_MODE_3; + spi->mode ^= SPI_CS_HIGH; spi->bits_per_word = 8; res = spi_setup(spi); if (res) |