diff --git a/projects/Rockchip/devices/RK3288/options b/projects/Rockchip/devices/RK3288/options
index ec837522bd..337cbcb225 100644
--- a/projects/Rockchip/devices/RK3288/options
+++ b/projects/Rockchip/devices/RK3288/options
@@ -25,7 +25,7 @@
     GRAPHIC_DRIVERS="panfrost"
 
   # kernel serial console
-    EXTRA_CMDLINE="console=uart8250,mmio32,0xff690000 console=tty0 coherent_pool=2M cec.debounce_ms=5000"
+    EXTRA_CMDLINE="console=uart8250,mmio32,0xff690000 console=tty0 coherent_pool=2M cec.debounce_ms=5000 cma=384M"
 
   # set the addon project
     ADDON_PROJECT="ARMv7"
diff --git a/projects/Rockchip/patches/linux/default/linux-9000-temp-rk3288-disable-vpu-iommu.patch b/projects/Rockchip/patches/linux/default/linux-9000-temp-rk3288-disable-vpu-iommu.patch
new file mode 100644
index 0000000000..575db99f4d
--- /dev/null
+++ b/projects/Rockchip/patches/linux/default/linux-9000-temp-rk3288-disable-vpu-iommu.patch
@@ -0,0 +1,12 @@
+diff --git a/arch/arm/boot/dts/rockchip/rk3288.dtsi b/arch/arm/boot/dts/rockchip/rk3288.dtsi
+index 9ff190ab1d..1d5a4a68f6 100644
+--- a/arch/arm/boot/dts/rockchip/rk3288.dtsi
++++ b/arch/arm/boot/dts/rockchip/rk3288.dtsi
+@@ -1298,6 +1298,7 @@ vpu_mmu: iommu@ff9a0800 {
+ 		clock-names = "aclk", "iface";
+ 		#iommu-cells = <0>;
+ 		power-domains = <&power RK3288_PD_VIDEO>;
++		status = "disabled";
+ 	};
+ 
+ 	hevc: hevc@ff9c0000 {