diff --git a/src/soc/intel/tigerlake/Kconfig b/src/soc/intel/tigerlake/Kconfig
index 6d20112..2b673cab 100644
--- a/src/soc/intel/tigerlake/Kconfig
+++ b/src/soc/intel/tigerlake/Kconfig
@@ -94,6 +94,9 @@
 	default 16 if SOC_INTEL_TIGERLAKE_PCH_H
 	default 8
 
+config DIMM_SPD_SIZE
+	default 512
+
 config DCACHE_RAM_BASE
 	default 0xfef00000