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-rw-r--r--Documentation/gpu/drm-mm.rst3
-rw-r--r--drivers/gpu/drm/ttm/ttm_module.c12
2 files changed, 14 insertions, 1 deletions
diff --git a/Documentation/gpu/drm-mm.rst b/Documentation/gpu/drm-mm.rst
index 8ca981065e1a..6b7717af4f88 100644
--- a/Documentation/gpu/drm-mm.rst
+++ b/Documentation/gpu/drm-mm.rst
@@ -28,7 +28,8 @@ UMA devices.
The Translation Table Manager (TTM)
===================================
-TTM design background and information belongs here.
+.. kernel-doc:: drivers/gpu/drm/ttm/ttm_module.c
+ :doc: TTM
The Graphics Execution Manager (GEM)
====================================
diff --git a/drivers/gpu/drm/ttm/ttm_module.c b/drivers/gpu/drm/ttm/ttm_module.c
index 997c458f68a9..6c19290f7ea9 100644
--- a/drivers/gpu/drm/ttm/ttm_module.c
+++ b/drivers/gpu/drm/ttm/ttm_module.c
@@ -40,6 +40,18 @@
#include "ttm_module.h"
/**
+ * DOC: TTM
+ *
+ * TTM is a memory manager for accelerator devices with dedicated memory.
+ *
+ * The basic idea is that resources are grouped together in buffer objects of
+ * certain size and TTM handles lifetime, movement and CPU mappings of those
+ * objects.
+ *
+ * TODO: Add more design background and information here.
+ */
+
+/**
* ttm_prot_from_caching - Modify the page protection according to the
* ttm cacing mode
* @caching: The ttm caching mode