To better organize the information, add a microcontrollers section and
move/link the GuC, HuC and DMC documentation under it. Also add a small
intro.
Signed-off-by: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
Cc: Michal Wajdeczko <michal.wajdeczko@xxxxxxxxx>
Acked-by: Anna Karas <anna.karas@xxxxxxxxx>
Reviewed-by: Martin Peres <martin.peres@xxxxxxxxxxxxxxx>
---
Documentation/gpu/i915.rst | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/Documentation/gpu/i915.rst b/Documentation/gpu/i915.rst
index 465779670fd4..f1bae7867045 100644
--- a/Documentation/gpu/i915.rst
+++ b/Documentation/gpu/i915.rst
@@ -415,6 +415,15 @@ Object Tiling IOCTLs
.. kernel-doc:: drivers/gpu/drm/i915/gem/i915_gem_tiling.c
:doc: buffer object tiling
+Microcontrollers
+================
+
+Starting from gen9, three microcontrollers are available on the HW: the
+graphics microcontroller (GuC), the HEVC/H.265 microcontroller (HuC) and the
+display microcontroller (DMC). The driver is responsible for loading the
+firmwares on the microcontrollers; the GuC and HuC firmwares are transferred
+to WOPCM using the DMA engine, while the DMC firmware is written through MMIO.
+
WOPCM
-----
@@ -454,6 +463,15 @@ GuC Address Space
.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_guc.c
:doc: GuC Address Space
+HuC
+---
+.. kernel-doc:: drivers/gpu/drm/i915/gt/uc/intel_huc_fw.c
+ :doc: HuC Firmware
+
+DMC
+---
+See `CSR firmware support for DMC`_
+
Tracing
=======
--
2.23.0
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