spi: npcm_pspi: Fix the wrong clock divider calculation

Fix the wrong clock divider calculation.

Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>

diff --git a/drivers/spi/npcm_pspi.c b/drivers/spi/npcm_pspi.c
index 37bab70..eb14185 100644 (file)
--- a/drivers/spi/npcm_pspi.c
+++ b/drivers/spi/npcm_pspi.c
@@ -144,7 +144,7 @@ static int npcm_pspi_set_speed(struct udevice *bus, uint speed)
        if (speed > priv->max_hz)
                speed = priv->max_hz;
 
-       divisor = DIV_ROUND_CLOSEST(apb_clock, (2 * speed) - 1);
+       divisor = DIV_ROUND_CLOSEST(apb_clock, (2 * speed)) - 1;
        if (divisor > MAX_DIV)
                divisor = MAX_DIV;