diff --git a/src/drivers/i2c/designware/dw_i2c.h b/src/drivers/i2c/designware/dw_i2c.h
index 220d2afc74..e309bc12a2 100644
--- a/src/drivers/i2c/designware/dw_i2c.h
+++ b/src/drivers/i2c/designware/dw_i2c.h
@@ -129,7 +129,7 @@ int dw_i2c_transfer(unsigned int bus,
  * -1 = failure
  * >=0 = logical bus number
  */
-int dw_i2c_soc_dev_to_bus(struct device *dev);
+int dw_i2c_soc_dev_to_bus(const struct device *dev);
 
 /*
  * Common device_operations implementation to initialize the i2c host
diff --git a/src/soc/amd/picasso/i2c.c b/src/soc/amd/picasso/i2c.c
index 8ba05aa9de..25dab397c0 100644
--- a/src/soc/amd/picasso/i2c.c
+++ b/src/soc/amd/picasso/i2c.c
@@ -63,7 +63,7 @@ const char *i2c_acpi_name(const struct device *dev)
 	}
 }
 
-int dw_i2c_soc_dev_to_bus(struct device *dev)
+int dw_i2c_soc_dev_to_bus(const struct device *dev)
 {
 	switch (dev->path.mmio.addr) {
 	case APU_I2C2_BASE:
diff --git a/src/soc/amd/stoneyridge/i2c.c b/src/soc/amd/stoneyridge/i2c.c
index 1fdb41691c..852930a88d 100644
--- a/src/soc/amd/stoneyridge/i2c.c
+++ b/src/soc/amd/stoneyridge/i2c.c
@@ -64,7 +64,7 @@ const char *i2c_acpi_name(const struct device *dev)
 	}
 }
 
-int dw_i2c_soc_dev_to_bus(struct device *dev)
+int dw_i2c_soc_dev_to_bus(const struct device *dev)
 {
 	switch (dev->path.mmio.addr) {
 	case I2CA_BASE_ADDRESS:
diff --git a/src/soc/intel/common/block/i2c/i2c.c b/src/soc/intel/common/block/i2c/i2c.c
index 46f19fb5eb..b9638fe242 100644
--- a/src/soc/intel/common/block/i2c/i2c.c
+++ b/src/soc/intel/common/block/i2c/i2c.c
@@ -14,7 +14,7 @@
 #include <soc/iomap.h>
 #include <soc/pci_devs.h>
 
-int dw_i2c_soc_dev_to_bus(struct device *dev)
+int dw_i2c_soc_dev_to_bus(const struct device *dev)
 {
 	pci_devfn_t devfn = dev->path.pci.devfn;
 	return dw_i2c_soc_devfn_to_bus(devfn);