diff --git a/soc/arm/atmel_sam/sam3x/Kconfig.defconfig.series b/soc/arm/atmel_sam/sam3x/Kconfig.defconfig.series
index a4f6baf0f5c..cca63a1ca59 100644
--- a/soc/arm/atmel_sam/sam3x/Kconfig.defconfig.series
+++ b/soc/arm/atmel_sam/sam3x/Kconfig.defconfig.series
@@ -14,7 +14,11 @@ config SOC_SERIES
 
 config SOC_PART_NUMBER
 	string
+	default "sam3x4c" if SOC_PART_NUMBER_SAM3X4C
+	default "sam3x4e" if SOC_PART_NUMBER_SAM3X4E
+	default "sam3x8c" if SOC_PART_NUMBER_SAM3X8C
 	default "sam3x8e" if SOC_PART_NUMBER_SAM3X8E
+	default "sam3x8h" if SOC_PART_NUMBER_SAM3X8H
 
 #
 # SAM3 family has total 45 peripherals capable of
diff --git a/soc/arm/atmel_sam/sam3x/Kconfig.soc b/soc/arm/atmel_sam/sam3x/Kconfig.soc
index 1b9291c2cbf..4f040509a97 100644
--- a/soc/arm/atmel_sam/sam3x/Kconfig.soc
+++ b/soc/arm/atmel_sam/sam3x/Kconfig.soc
@@ -11,8 +11,16 @@ choice
 	prompt "Atmel SAM3X MCU Selection"
 	depends on SOC_SERIES_SAM3X
 
+	config SOC_PART_NUMBER_SAM3X4C
+		bool "SAM3X4C"
+	config SOC_PART_NUMBER_SAM3X4E
+		bool "SAM3X4E"
+	config SOC_PART_NUMBER_SAM3X8C
+		bool "SAM3X8C"
 	config SOC_PART_NUMBER_SAM3X8E
 		bool "SAM3X8E"
+	config SOC_PART_NUMBER_SAM3X8H
+		bool "SAM3X8H"
 endchoice
 
 if SOC_SERIES_SAM3X