diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c
index 6cc11b9..a94f88e 100644
--- a/drivers/ddr/altera/sequencer.c
+++ b/drivers/ddr/altera/sequencer.c
@@ -3258,7 +3258,11 @@
 	writel(gbl->curr_read_lat, &phy_mgr_cfg->phy_rlat);
 }
 
-/* Memory calibration entry point */
+/**
+ * mem_calibrate() - Memory calibration entry point.
+ *
+ * Perform memory calibration.
+ */
 static uint32_t mem_calibrate(void)
 {
 	uint32_t i;