spi/spi-fsl-spi: Make sure in spi_fsl_setup that chipselect becomes inactive

This is needed for a device in SPI_CS_HIGH mode that otherwise could start out
active for the first transaction.

Acked-by: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/spi/spi-fsl-spi.c b/drivers/spi/spi-fsl-spi.c
index 9878911ee6af..1569f7defc73 100644
--- a/drivers/spi/spi-fsl-spi.c
+++ b/drivers/spi/spi-fsl-spi.c
@@ -387,6 +387,10 @@ static int fsl_spi_setup(struct spi_device *spi)
                 cs->hw_mode = hw_mode; /* Restore settings */
                 return retval;
         }
+
+        /* Initialize chipselect - might be active for SPI_CS_HIGH mode */
+        fsl_spi_chipselect(spi, BITBANG_CS_INACTIVE);
+
         return 0;
 }