diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
index 1d256dce0e4b..0143b42fa2bd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h
@@ -593,6 +593,11 @@ struct amdgpu_display_manager {
 	struct amdgpu_dm_backlight_caps backlight_caps[AMDGPU_DM_MAX_NUM_EDP];
 
 	struct mod_freesync *freesync_module;
+	/**
+	 * @power_module:
+	 *
+	 * Power management module.
+	 */
 	struct mod_power *power_module;
 	struct hdcp_workqueue *hdcp_workqueue;
 
@@ -734,7 +739,7 @@ struct amdgpu_display_manager {
 	/**
 	 * @hdmi_frl_status_polling_wq:
 	 *
-	 * workqueue for 200ms frl status polling
+	 * Workqueue for HDMI FRL status polling.
 	 */
 	struct workqueue_struct *hdmi_frl_status_polling_wq;
 	/**
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h
index bc16ecc67329..6ba567df5f0a 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_irq.h
@@ -44,6 +44,8 @@ enum dmub_notification_type;
  *
  * This function should be called exactly once - during DM initialization.
  *
+ * @adev: AMDGPU device.
+ *
  * Returns:
  *	0 - success
  *	non-zero - error
@@ -55,6 +57,8 @@ int amdgpu_dm_irq_init(struct amdgpu_device *adev);
  *
  * This function should be called exactly once - during DM destruction.
  *
+ * @adev: AMDGPU device.
+ *
  */
 void amdgpu_dm_irq_fini(struct amdgpu_device *adev);
 
@@ -82,6 +86,7 @@ void *amdgpu_dm_irq_register_interrupt(struct amdgpu_device *adev,
  *	by amdgpu_dm_irq_register_interrupt().
  *
  * @adev: AMD DRM device.
+ * @irq_source: IRQ source to unregister.
  * @ih_index: irq handler index which was returned by
  *	amdgpu_dm_irq_register_interrupt
  */
@@ -126,6 +131,8 @@ void amdgpu_dm_hpd_fini(struct amdgpu_device *adev);
 /**
  * amdgpu_dm_irq_suspend - disable ASIC interrupt during suspend.
  *
+ * @adev: AMDGPU device.
+ *
  */
 void amdgpu_dm_irq_suspend(struct amdgpu_device *adev);
 
@@ -133,6 +140,8 @@ void amdgpu_dm_irq_suspend(struct amdgpu_device *adev);
  * amdgpu_dm_irq_resume_early - enable HPDRX ASIC interrupts during resume.
  * amdgpu_dm_irq_resume - enable ASIC interrupt during resume.
  *
+ * @adev: AMDGPU device.
+ *
  */
 void amdgpu_dm_irq_resume_early(struct amdgpu_device *adev);
 void amdgpu_dm_irq_resume_late(struct amdgpu_device *adev);
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
index 4436d256a2ae..21fedc5f21bd 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h
@@ -37,7 +37,7 @@
 
 #define DP_BRANCH_VENDOR_SPECIFIC_START 0x50C
 
-/**
+/*
  * Panamera MST Hub detection
  * Offset DPCD 050Eh == 0x5A indicates cascaded MST hub case
  * Check from beginning of branch device vendor specific field (050Ch)