On Fri, 2015-03-13 at 18:43 +0200, Ivan T. Ivanov wrote: > Some devices samples state of the chip select signal during power up > and act differently based on this state, so SPI core should ensure > that CS line is driven in non-active state after spi_setup(). > > Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx> > --- Any comments on this one? Forget to add changes since v1 [1]. CS is set to non-active state unconditionally before spi->master->setup() Regards, Ivan [1] http://www.spinics.net/lists/linux-spi/msg03056.html > drivers/spi/spi.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c > index c64a3e5..4023cc9 100644 > --- a/drivers/spi/spi.c > +++ b/drivers/spi/spi.c > @@ -1893,6 +1893,8 @@ int spi_setup(struct spi_device *spi) > if (!spi->max_speed_hz) > spi->max_speed_hz = spi->master->max_speed_hz; > > + spi_set_cs(spi, false); > + > if (spi->master->setup) > status = spi->master->setup(spi); > -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
