+device tree

src/arch/arm/boot/dts/elphel393-bootargs-mmc.dtsi

+/**/
+/ {
+	chosen {
+		bootargs = "cma=336M console=ttyPS0,115200 root=/dev/mmcblk0p2 rw ip=192.168.0.8 earlyprintk rootwait rootfstype=ext4";
+		linux,stdout-path = "/amba@0/serial@e0000000";
+	};
+};

src/arch/arm/boot/dts/elphel393-bootargs-nand.dtsi

+/**/
+/ {
+	chosen {
+		bootargs = "cma=336M console=ttyPS0,115200 root=ubi0:elphel393-rootfs rw ip=192.168.0.8 earlyprintk rootwait rootfstype=ubifs ubi.mtd=4,2048";
+		linux,stdout-path = "/amba@0/serial@e0000000";
+	};
+};

src/arch/arm/boot/dts/elphel393-bootargs-ram.dtsi

+/**/
+/ {
+	chosen {
+		bootargs = "cma=336M console=ttyPS0,115200 root=/dev/ram rw ip=192.168.0.8 earlyprintk ramdisk_size=262144";
+		linux,stdout-path = "/amba@0/serial@e0000000";
+	};
+};