diff --git a/drivers/serial/serial_rockchip.c b/drivers/serial/serial_rockchip.c
index 6bac95a..c06afc5 100644
--- a/drivers/serial/serial_rockchip.c
+++ b/drivers/serial/serial_rockchip.c
@@ -27,6 +27,7 @@
 	plat->plat.base = plat->dtplat.reg[0];
 	plat->plat.reg_shift = plat->dtplat.reg_shift;
 	plat->plat.clock = plat->dtplat.clock_frequency;
+	plat->plat.fcr = UART_FCR_DEFVAL;
 	dev->platdata = &plat->plat;
 
 	return ns16550_serial_probe(dev);