arm64: dts: rockchip: default serial for Firefly-RK3399

The Firefly-RK3399 uses serial2 with 1,500,000 baud by default
for communication in U-Boot and in the vendor provided distros.

So let us set the same default in the Linux kernel.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
index f6fbcc05073e..b2a7a55e1ec8 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts
@@ -49,6 +49,10 @@
         model = "Firefly-RK3399 Board";
         compatible = "firefly,firefly-rk3399", "rockchip,rk3399";
 
+        chosen {
+                stdout-path = "serial2:1500000n8";
+        };
+
         backlight: backlight {
                 compatible = "pwm-backlight";
                 enable-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;