diff --git a/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf b/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
index 559e2b6..f94432e 100644
--- a/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
+++ b/meta-evb-aspeed/meta-evb-ast2500/conf/machine/evb-ast2500.conf
@@ -1,6 +1,8 @@
 KMACHINE = "aspeed"
 KERNEL_DEVICETREE = "${KMACHINE}-ast2500-evb.dtb"
 
+UBOOT_MACHINE = "ast_g5_phy_config"
+
 require conf/machine/include/ast2500.inc
 require conf/machine/include/obmc-bsp-common.inc
 require conf/machine/include/sample.inc