diff -Nur linux-5.15.81.orig/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi linux-5.15.81/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi
--- linux-5.15.81.orig/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi	2022-12-02 17:41:12.000000000 +0100
+++ linux-5.15.81/arch/arm64/boot/dts/rockchip/rk3399-rock-pi-4.dtsi	2022-12-22 09:51:57.370394227 +0100
@@ -17,7 +17,7 @@
 	};
 
 	chosen {
-		stdout-path = "serial2:1500000n8";
+		stdout-path = "serial2:115200n8";
 	};
 
 	clkin_gmac: external-gmac-clock {