Index: arch/arm/dts/rk3328-rock64.dts
--- arch/arm/dts/rk3328-rock64.dts.orig
+++ arch/arm/dts/rk3328-rock64.dts
@@ -16,7 +16,7 @@
 	};
 
 	chosen {
-		stdout-path = "serial2:1500000n8";
+		stdout-path = "serial2:115200n8";
 	};
 
 	gmac_clkin: external-gmac-clock {
