diff --git a/configs/sama5d36ek_cmp_mmc_defconfig b/configs/sama5d36ek_cmp_mmc_defconfig
index 3026cab..79facd4 100644
--- a/configs/sama5d36ek_cmp_mmc_defconfig
+++ b/configs/sama5d36ek_cmp_mmc_defconfig
@@ -45,6 +45,7 @@
 CONFIG_NAND_ATMEL=y
 CONFIG_DM_SPI_FLASH=y
 CONFIG_SPI_FLASH=y
+CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_ATMEL=y
 CONFIG_DM_ETH=y
 CONFIG_MACB=y