diff --git a/root/target/linux/mediatek/mt7623/config-4.14 b/root/target/linux/mediatek/mt7623/config-4.14
index 0fe0cbff..549582be 100644
--- a/root/target/linux/mediatek/mt7623/config-4.14
+++ b/root/target/linux/mediatek/mt7623/config-4.14
@@ -57,6 +57,7 @@ CONFIG_ATAGS_PROC=y
 CONFIG_AUTO_ZRELADDR=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_MQ_PCI=y
+CONFIG_BOUNCE=y
 # CONFIG_CACHE_L2X0 is not set
 CONFIG_CC_STACKPROTECTOR=y
 # CONFIG_CC_STACKPROTECTOR_NONE is not set
@@ -72,7 +73,7 @@ CONFIG_CLEANCACHE=y
 CONFIG_CLKDEV_LOOKUP=y
 CONFIG_CLKSRC_MMIO=y
 CONFIG_CLONE_BACKWARDS=y
-CONFIG_CMDLINE="earlyprintk console=ttyS0,115200 vmalloc=496M"
+CONFIG_CMDLINE="earlyprintk console=ttyS0,115200 vmalloc=476M"
 CONFIG_CMDLINE_EXTEND=y
 CONFIG_COMMON_CLK=y
 CONFIG_COMMON_CLK_MEDIATEK=y
@@ -270,7 +271,7 @@ CONFIG_HAVE_SMP=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_UID16=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
-# CONFIG_HIGHMEM is not set
+CONFIG_HIGHMEM=y
 # CONFIG_HIGHPTE is not set
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HWMON=y
diff --git a/root/target/linux/mediatek/patches-4.14/0229-fix-memory-size-for-bpi-r2.patch b/root/target/linux/mediatek/patches-4.14/0229-fix-memory-size-for-bpi-r2.patch
index ded533d3..517b5be6 100644
--- a/root/target/linux/mediatek/patches-4.14/0229-fix-memory-size-for-bpi-r2.patch
+++ b/root/target/linux/mediatek/patches-4.14/0229-fix-memory-size-for-bpi-r2.patch
@@ -1,13 +1,23 @@
-Index: linux-4.9.44/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts
-===================================================================
---- linux-4.9.44.orig/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts	2017-09-02 08:21:11.998199513 +0800
-+++ linux-4.9.44/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts	2017-09-02 08:33:09.452252584 +0800
-@@ -18,7 +18,7 @@
+--- a/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts	2018-12-26 16:53:06.778501203 +0100
++++ b/arch/arm/boot/dts/mt7623n-bananapi-bpi-r2.dts	2018-12-26 16:55:46.280213376 +0100
+@@ -22,6 +22,7 @@
  	};
- */
+ 
  	memory {
 -		reg = <0 0x80000000 0 0x20000000>;
++		device_type = "memory";
 +		reg = <0 0x80000000 0 0x80000000>;
  	};
  
- 	aliases {
+@@ -115,11 +116,6 @@
+ 		};
+ 	};
+ 
+-	memory@80000000 {
+-		device_type = "memory";
+-		reg = <0 0x80000000 0 0x40000000>;
+-	};
+-
+ 	mt7530: switch@0 {
+ 		compatible = "mediatek,mt7530";
+ 	};