cma=336M, mem 76800x4k

conf/machine/boards/elphel393/bootargs-mmc.dtsi

 /**/
 / {
 	chosen {
-		bootargs = "cma=128M console=ttyPS0,115200 root=/dev/mmcblk0p2 rw ip=192.168.0.8 earlyprintk rootwait rootfstype=ext4";
+		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";
 	};
 };

conf/machine/boards/elphel393/bootargs-nand.dtsi

 /**/
 / {
 	chosen {
-		bootargs = "cma=128M console=ttyPS0,115200 root=ubi0:elphel393-rootfs rw ip=192.168.0.8 earlyprintk rootwait rootfstype=ubifs ubi.mtd=4,2048";
+		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";
 	};
 };

conf/machine/boards/elphel393/bootargs-ram.dtsi

 /**/
 / {
 	chosen {
-		bootargs = "cma=128M console=ttyPS0,115200 root=/dev/ram rw ip=192.168.0.8 earlyprintk ramdisk_size=262144";
+		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";
 	};
 };

conf/machine/boards/elphel393/elphel393.dts

@@ -186,7 +186,8 @@
 	
 	elphel393_mem: elphel393-mem@0 {
 		compatible = "elphel,elphel393-mem-1.00";
-		memsize = <25600>;
+		/*memsize = <25600>;*/
+		memsize = <76800>;
 	} ;
 	
 	elphel393_init: elphel393-init {