diff --git a/conf/machine/include/rk3588.inc b/conf/machine/include/rk3588.inc
index 34f0627..958efb2 100644
--- a/conf/machine/include/rk3588.inc
+++ b/conf/machine/include/rk3588.inc
@@ -1,4 +1,5 @@
 MACHINEOVERRIDES =. "rk3588:"
+SOC_FAMILY = "rk3588"
 
 # the rk3588s is a "stripped-down" version of the rk3588
 # in the kernel's device-tree the rk3588 builds on top of the rk3588s
diff --git a/conf/machine/include/rk3588s.inc b/conf/machine/include/rk3588s.inc
index 878f7a8..6e700d8 100644
--- a/conf/machine/include/rk3588s.inc
+++ b/conf/machine/include/rk3588s.inc
@@ -1,3 +1,4 @@
+SOC_FAMILY ?= "rk3588s"
 MACHINEOVERRIDES =. "rk3588s:"
 DEFAULTTUNE ?= "cortexa76-cortexa55-crypto"