diff --git a/arch/arm/mach-sunxi/dram_helpers.c b/arch/arm/mach-sunxi/dram_helpers.c
index 50318d2eb6..e0c823a4dd 100644
--- a/arch/arm/mach-sunxi/dram_helpers.c
+++ b/arch/arm/mach-sunxi/dram_helpers.c
@@ -7,6 +7,7 @@
  */
 
 #include <common.h>
+#include <asm/armv7.h>
 #include <asm/io.h>
 #include <asm/arch/dram.h>
 
@@ -31,6 +32,7 @@ bool mctl_mem_matches(u32 offset)
 	/* Try to write different values to RAM at two addresses */
 	writel(0, CONFIG_SYS_SDRAM_BASE);
 	writel(0xaa55aa55, (ulong)CONFIG_SYS_SDRAM_BASE + offset);
+	DSB;
 	/* Check if the same value is actually observed when reading back */
 	return readl(CONFIG_SYS_SDRAM_BASE) ==
 	       readl((ulong)CONFIG_SYS_SDRAM_BASE + offset);
diff --git a/configs/A13-OLinuXino_defconfig b/configs/A13-OLinuXino_defconfig
index d2d0cbda6d..30ea836f39 100644
--- a/configs/A13-OLinuXino_defconfig
+++ b/configs/A13-OLinuXino_defconfig
@@ -32,6 +32,7 @@ CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
 CONFIG_CMD_FAT=y
 CONFIG_CMD_FS_GENERIC=y
+CONFIG_AXP_ALDO3_VOLT=3300
 CONFIG_USB_EHCI_HCD=y
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_GADGET=y