diff --git a/cpu/atmega_common/Kconfig b/cpu/atmega_common/Kconfig
index 61ec6df358..386916f5bd 100644
--- a/cpu/atmega_common/Kconfig
+++ b/cpu/atmega_common/Kconfig
@@ -26,6 +26,12 @@ config CPU_COMMON_ATMEGA
     select HAS_PERIPH_WDT
     select HAS_PUF_SRAM
 
+# Define ATMega128 family here as it is used by different CPUs
+config CPU_FAM_ATMEGA128
+    bool
+    select CPU_COMMON_ATMEGA
+    select CPU_CORE_AVR
+
 ## Common CPU symbols
 config CPU_ARCH
     default "avr8" if CPU_ARCH_AVR8
@@ -33,6 +39,9 @@ config CPU_ARCH
 config CPU_CORE
     default "avr" if CPU_CORE_AVR
 
+config CPU_FAM
+    default "atmega128" if CPU_FAM_ATMEGA128
+
 ## Declaration of specific features
 config HAS_ARCH_AVR8
     bool