diff --git a/arch/xtensa/boot/dts/xtfpga.dtsi b/arch/xtensa/boot/dts/xtfpga.dtsi
index cd0b9e34adc8b371d3548c6a9e1218aaef24bd38..be3fd769677aab0e4f156a4d7f834bf2b79dc559 100644
--- a/arch/xtensa/boot/dts/xtfpga.dtsi
+++ b/arch/xtensa/boot/dts/xtfpga.dtsi
@@ -60,6 +60,8 @@
 			no-loopback-test;
 			reg = <0x0d050020 0x20>;
 			reg-shift = <2>;
+			reg-io-width = <4>;
+			native-endian;
 			interrupts = <0 1>; /* external irq 0 */
 			clocks = <&osc>;
 		};
diff --git a/arch/xtensa/platforms/xtfpga/setup.c b/arch/xtensa/platforms/xtfpga/setup.c
index e9f65f79cf2ea0bff6393313385bbebf500db9a3..b7f468a6a557229d9d6ecce10b39f30bc1dfdf2e 100644
--- a/arch/xtensa/platforms/xtfpga/setup.c
+++ b/arch/xtensa/platforms/xtfpga/setup.c
@@ -283,7 +283,7 @@ static struct plat_serial8250_port serial_platform_data[] = {
 		.irq		= DUART16552_INTNUM,
 		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
 				  UPF_IOREMAP,
-		.iotype		= UPIO_MEM32,
+		.iotype		= XCHAL_HAVE_BE ? UPIO_MEM32BE : UPIO_MEM32,
 		.regshift	= 2,
 		.uartclk	= 0,    /* set in xtavnet_init() */
 	},