[U-Boot] [PATCH 3/3] spi: mxc_spi: Fix spi mode communication where clock is inverted

During spi initialization logic creates a glitch on the clock and if this is followed by the chip select this can be interpretated as clock. Add a delay let the glitch out of chip select

Signed-off-by: Michael Trimarchi michael@amarulasolutions.com --- drivers/spi/mxc_spi.c | 1 + 1 file changed, 1 insertion(+)

diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c index 0dccc38..d450f16 100644 --- a/drivers/spi/mxc_spi.c +++ b/drivers/spi/mxc_spi.c @@ -387,6 +387,7 @@ static int mxc_spi_claim_bus_internal(struct mxc_spi_slave *mxcs, int cs) } reg_write(&regs->period, MXC_CSPIPERIOD_32KHZ); reg_write(&regs->intr, 0); + udelay(50);

return 0; }