diff --git a/drivers/core/device.c b/drivers/core/device.c
index d1a08ce783..f2d750c8de 100644
--- a/drivers/core/device.c
+++ b/drivers/core/device.c
@@ -959,6 +959,36 @@ int device_set_name(struct udevice *dev, const char *name)
 	return 0;
 }
 
+void dev_set_priv(struct udevice *dev, void *priv)
+{
+	dev->priv = priv;
+}
+
+void dev_set_parent_priv(struct udevice *dev, void *parent_priv)
+{
+	dev->parent_priv = parent_priv;
+}
+
+void dev_set_uclass_priv(struct udevice *dev, void *uclass_priv)
+{
+	dev->uclass_priv = uclass_priv;
+}
+
+void dev_set_plat(struct udevice *dev, void *plat)
+{
+	dev->plat = plat;
+}
+
+void dev_set_parent_plat(struct udevice *dev, void *parent_plat)
+{
+	dev->parent_plat = parent_plat;
+}
+
+void dev_set_uclass_plat(struct udevice *dev, void *uclass_plat)
+{
+	dev->uclass_plat = uclass_plat;
+}
+
 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
 bool device_is_compatible(const struct udevice *dev, const char *compat)
 {
diff --git a/include/dm/device-internal.h b/include/dm/device-internal.h
index af3b6b2b05..03b092bdf7 100644
--- a/include/dm/device-internal.h
+++ b/include/dm/device-internal.h
@@ -189,6 +189,90 @@ static inline int device_chld_remove(struct udevice *dev, struct driver *drv,
 }
 #endif
 
+/**
+ * dev_set_priv() - Set the private data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * private data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev		Device to check
+ * @priv	New private-data pointer
+ */
+void dev_set_priv(struct udevice *dev, void *priv);
+
+/**
+ * dev_set_parent_priv() - Set the parent-private data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * parent-private data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev:	Device to update
+ * @parent_priv: New parent-private data
+ */
+void dev_set_parent_priv(struct udevice *dev, void *parent_priv);
+
+/**
+ * dev_set_uclass_priv() - Set the uclass private data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * uclass-private data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev:	Device to update
+ * @uclass_priv: New uclass private data
+ */
+void dev_set_uclass_priv(struct udevice *dev, void *uclass_priv);
+
+/**
+ * dev_set_plat() - Set the platform data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * platform data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev		Device to check
+ * @plat	New platform-data pointer
+ */
+void dev_set_plat(struct udevice *dev, void *priv);
+
+/**
+ * dev_set_parent_plat() - Set the parent platform data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * parent platform data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev:	Device to update
+ * @parent_plat: New parent platform data
+ */
+void dev_set_parent_plat(struct udevice *dev, void *parent_plat);
+
+/**
+ * dev_set_uclass_plat() - Set the uclass platform data for a device
+ *
+ * This is normally handled by driver model, which automatically allocates
+ * uclass platform data when an 'auto' size if provided by the driver.
+ *
+ * Use this function to override normal operation for special situations, such
+ * as needing to allocate a variable amount of data.
+ *
+ * @dev:	Device to update
+ * @uclass_plat: New uclass platform data
+ */
+void dev_set_uclass_plat(struct udevice *dev, void *uclass_plat);
+
 /**
  * simple_bus_translate() - translate a bus address to a system address
  *