diff --git a/configs/r2dplus_defconfig b/configs/r2dplus_defconfig
index 9e6331dc8a7b9ccdf941e9c5779ef31abc89715a..53b7c2e05d30e3e15f1275a9a431cb90a6467169 100644
--- a/configs/r2dplus_defconfig
+++ b/configs/r2dplus_defconfig
@@ -8,6 +8,8 @@ CONFIG_TARGET_R2DPLUS=y
 CONFIG_BOOTDELAY=-1
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttySC0,115200"
+CONFIG_USE_PREBOOT=y
+CONFIG_PREBOOT="pci enum"
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_IMLS=y
 CONFIG_CMD_DM=y