diff --git a/src/soc/intel/alderlake/Kconfig b/src/soc/intel/alderlake/Kconfig
index 9034f5d252..c78a09076d 100644
--- a/src/soc/intel/alderlake/Kconfig
+++ b/src/soc/intel/alderlake/Kconfig
@@ -85,6 +85,7 @@ config SOC_INTEL_ALDERLAKE
 	select SOC_INTEL_COMMON_BLOCK_XHCI
 	select SOC_INTEL_COMMON_BLOCK_XHCI_ELOG
 	select SOC_INTEL_COMMON_FEATURE
+	select SOC_INTEL_COMMON_FEATURE_I2C_DEVFN
 	select SOC_INTEL_COMMON_FEATURE_UART_DEVICES
 	select SOC_INTEL_COMMON_FSP_RESET
 	select SOC_INTEL_COMMON_PCH_CLIENT
diff --git a/src/soc/intel/alderlake/Makefile.mk b/src/soc/intel/alderlake/Makefile.mk
index eafba3cbd6..2e97718bc2 100644
--- a/src/soc/intel/alderlake/Makefile.mk
+++ b/src/soc/intel/alderlake/Makefile.mk
@@ -6,7 +6,6 @@ subdirs-y += ../../../cpu/intel/turbo
 
 # all (bootblock, verstage, romstage, postcar, ramstage)
 all-y += gspi.c
-all-y += i2c.c
 all-y += pmutil.c
 all-y += spi.c
 
diff --git a/src/soc/intel/alderlake/i2c.c b/src/soc/intel/alderlake/i2c.c
deleted file mode 100644
index 5fcca2a9e7..0000000000
--- a/src/soc/intel/alderlake/i2c.c
+++ /dev/null
@@ -1,57 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-
-/*
- * This file is created based on Intel Alder Lake Processor PCH Datasheet
- * Document number: 621483
- * Chapter number: 13
- */
-
-#include <device/device.h>
-#include <drivers/i2c/designware/dw_i2c.h>
-#include <soc/pci_devs.h>
-
-int dw_i2c_soc_devfn_to_bus(unsigned int devfn)
-{
-	switch (devfn) {
-	case PCH_DEVFN_I2C0:
-		return 0;
-	case PCH_DEVFN_I2C1:
-		return 1;
-	case PCH_DEVFN_I2C2:
-		return 2;
-	case PCH_DEVFN_I2C3:
-		return 3;
-	case PCH_DEVFN_I2C4:
-		return 4;
-	case PCH_DEVFN_I2C5:
-		return 5;
-	case PCH_DEVFN_I2C6:
-		return 6;
-	case PCH_DEVFN_I2C7:
-		return 7;
-	}
-	return -1;
-}
-
-int dw_i2c_soc_bus_to_devfn(unsigned int bus)
-{
-	switch (bus) {
-	case 0:
-		return PCH_DEVFN_I2C0;
-	case 1:
-		return PCH_DEVFN_I2C1;
-	case 2:
-		return PCH_DEVFN_I2C2;
-	case 3:
-		return PCH_DEVFN_I2C3;
-	case 4:
-		return PCH_DEVFN_I2C4;
-	case 5:
-		return PCH_DEVFN_I2C5;
-	case 6:
-		return PCH_DEVFN_I2C6;
-	case 7:
-		return PCH_DEVFN_I2C7;
-	}
-	return -1;
-}
diff --git a/src/soc/intel/alderlake/include/soc/pci_devs.h b/src/soc/intel/alderlake/include/soc/pci_devs.h
index 9876397219..13cea6d2fc 100644
--- a/src/soc/intel/alderlake/include/soc/pci_devs.h
+++ b/src/soc/intel/alderlake/include/soc/pci_devs.h
@@ -284,3 +284,6 @@
 #define PCI_DEVFN_UART2		PCH_DEVFN_UART2
 
 #endif
+
+/* for common code */
+#define SOC_I2C_DEVFN(n)	PCH_DEVFN_I2C##n