diff --git a/drivers/spi/spi-rockchip.c b/drivers/spi/spi-rockchip.c
index 1b54f2f180215f0b55931dda4fd4b39e51ce6c8b..5488597cfad4016af4c907f097ab49ff2d318479 100644
--- a/drivers/spi/spi-rockchip.c
+++ b/drivers/spi/spi-rockchip.c
@@ -173,7 +173,7 @@ struct rockchip_spi {
 	u8 tmode;
 	u8 bpw;
 	u8 n_bytes;
-	u8 rsd_nsecs;
+	u32 rsd_nsecs;
 	unsigned len;
 	u32 speed;