Add a kernel-doc to the DE-Tile function hook.

Reviewed-by: Aurabindo Pillai <aurabindo.pil...@amd.com>
Acked-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
Signed-off-by: Rodrigo Siqueira <rodrigo.sique...@amd.com>
---
 .../gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c   |  4 ++++
 drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h  | 15 +++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c 
b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
index 9fbb72369c10..a88a71460521 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_hubbub.c
@@ -41,6 +41,10 @@
 #define FN(reg_name, field_name) \
        hubbub2->shifts->field_name, hubbub2->masks->field_name
 
+/**
+ * @DCN32_CRB_SEGMENT_SIZE_KB: Maximum Configurable Return Buffer size for
+ * DCN32
+ */
 #define DCN32_CRB_SEGMENT_SIZE_KB 64
 
 static void dcn32_init_crb(struct hubbub *hubbub)
diff --git a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h 
b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
index e7571c6f5ead..58f758fcbce1 100644
--- a/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
+++ b/drivers/gpu/drm/amd/display/dc/inc/hw/dchubbub.h
@@ -167,6 +167,21 @@ struct hubbub_funcs {
        void (*force_pstate_change_control)(struct hubbub *hubbub, bool force, 
bool allow);
 
        void (*init_watermarks)(struct hubbub *hubbub);
+
+       /**
+        * @program_det_size:
+        *
+        * DE-Tile buffers (DET) is a memory that is used to convert the tiled
+        * data into linear, which the rest of the display can use to generate
+        * the graphics output. One of the main features of this component is
+        * that each pipe has a configurable DET buffer which means that when a
+        * pipe is not enabled, the device can assign the memory to other
+        * enabled pipes to try to be more efficient.
+        *
+        * DET logic is handled by dchubbub. Some ASICs provide a feature named
+        * Configurable Return Buffer (CRB) segments which can be allocated to
+        * compressed or detiled buffers.
+        */
        void (*program_det_size)(struct hubbub *hubbub, int hubp_inst, unsigned 
det_buffer_size_in_kbyte);
        void (*program_compbuf_size)(struct hubbub *hubbub, unsigned 
compbuf_size_kb, bool safe_to_increase);
        void (*init_crb)(struct hubbub *hubbub);
-- 
2.35.1

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