--- /dev/null
+diff -urN a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
+--- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts 2019-12-17 14:43:47.273940258 +0800
++++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts 2019-12-17 14:44:20.300945884 +0800
+@@ -19,6 +19,7 @@
+
+ chosen {
+ stdout-path = "serial2:115200n8";
++ bootargs = "console=ttyS2,115200n8";
+ };
+
+ cpus {