change to 3 fb

buildroot-external/board/arkmicro/ark1668e_c281/rootfs_overlay/etc/init.d/S04qtlaunch

@@ -1,7 +1,7 @@
 export QTDIR=/usr
 export LD_LIBRARY_PATH=$QTDIR/lib:$LD_LIBRARY_PATH
 export MALI_NOCLEAR=1
-export MALI_MAX_WINDOW_BUFFERS=6
+export MALI_MAX_WINDOW_BUFFERS=3
 chmod 777 /usr/bin/TYW_AWTK/C281_1668E_DASHBOARD
 /usr/bin/TYW_H264/H264_Server &
 chmod 777 /etc/appDaemon.sh

linux/arch/arm/boot/dts/ark1668e_c281.dts

@@ -117,7 +117,7 @@
 		lvds-con = <0x4545>;
 		lvds-con2 = <0xfa000101>;
 		bits-per-pixel = <32>;
-		fb-buffer-nums = <6>;
+		fb-buffer-nums = <3>;
 		power-control-gpio = <&gportd 0 GPIO_ACTIVE_HIGH>;
 		lcd-wiring-mode = "RGB";
 		lcdcon-backlight;
@@ -234,7 +234,7 @@
 	};
 };
 &gpu{
-shared-mem-size =<0x10000000>;
+shared-mem-size =<0x18000000>;
 };
 
 &can0{