diff --git a/configs/T1040D4RDB_SECURE_BOOT_defconfig b/configs/T1040D4RDB_SECURE_BOOT_defconfig
index 030f72a..d1b3c1a 100644
--- a/configs/T1040D4RDB_SECURE_BOOT_defconfig
+++ b/configs/T1040D4RDB_SECURE_BOOT_defconfig
@@ -37,6 +37,8 @@
 CONFIG_FLASH_CFI_MTD=y
 CONFIG_SYS_FLASH_CFI=y
 CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_MODE=0
+CONFIG_SF_DEFAULT_SPEED=10000000
 CONFIG_SPI_FLASH_STMICRO=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_GIGE=y