diff --git a/include/linux/platform_data/mlxreg.h b/include/linux/platform_data/mlxreg.h
index a2adc3ad45f2..9cffa9a64ab3 100644
--- a/include/linux/platform_data/mlxreg.h
+++ b/include/linux/platform_data/mlxreg.h
@@ -75,6 +75,7 @@ struct mlxreg_hotplug_device {
  * @mask: attribute access mask;
  * @bit: attribute effective bit;
  * @capability: attribute capability register;
+ * @reg_prsnt: attribute presence register;
  * @mode: access mode;
  * @np - pointer to node platform associated with attribute;
  * @hpdev - hotplug device data;
@@ -88,6 +89,7 @@ struct mlxreg_core_data {
 	u32 mask;
 	u32 bit;
 	u32 capability;
+	u32 reg_prsnt;
 	umode_t	mode;
 	struct device_node *np;
 	struct mlxreg_hotplug_device hpdev;