diff --git a/configs/roc-pc-rk3399_defconfig b/configs/roc-pc-rk3399_defconfig
index 84e72e8b60..7754cb8388 100644
--- a/configs/roc-pc-rk3399_defconfig
+++ b/configs/roc-pc-rk3399_defconfig
@@ -45,6 +45,7 @@ CONFIG_CMD_TIME=y
 CONFIG_SPL_OF_CONTROL=y
 CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
 CONFIG_ENV_IS_IN_SPI_FLASH=y
+CONFIG_ENV_SPI_MAX_HZ=30000000
 CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SPL_DM_SEQ_ALIAS=y
 CONFIG_ROCKCHIP_GPIO=y
@@ -55,6 +56,7 @@ CONFIG_MMC_DW_ROCKCHIP=y
 CONFIG_MMC_SDHCI=y
 CONFIG_MMC_SDHCI_ROCKCHIP=y
 CONFIG_SF_DEFAULT_BUS=1
+CONFIG_SF_DEFAULT_SPEED=30000000
 CONFIG_SPI_FLASH_WINBOND=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_GMAC_ROCKCHIP=y