diff --git a/configs/sh7757lcr_defconfig b/configs/sh7757lcr_defconfig
index a7e7c2d..4f5808a 100644
--- a/configs/sh7757lcr_defconfig
+++ b/configs/sh7757lcr_defconfig
@@ -32,6 +32,7 @@
 CONFIG_DOS_PARTITION=y
 CONFIG_MMC=y
 CONFIG_SH_MMCIF=y
+CONFIG_BITBANGMII=y
 CONFIG_SH_ETHER=y
 CONFIG_SCIF_CONSOLE=y
 CONFIG_SPI=y