diff --git a/configs/tbs_a711_defconfig b/configs/tbs_a711_defconfig
index 253ef5c..007ff89 100644
--- a/configs/tbs_a711_defconfig
+++ b/configs/tbs_a711_defconfig
@@ -3,7 +3,7 @@
 CONFIG_SPL=y
 CONFIG_MACH_SUN8I_A83T=y
 CONFIG_DRAM_TYPE=7
-CONFIG_DRAM_CLK=648
+CONFIG_DRAM_CLK=552
 CONFIG_DRAM_ZQ=15355
 CONFIG_DRAM_ODT_EN=y
 CONFIG_MMC_SUNXI_SLOT_EXTRA=2