docs: Add a stub page for Panfrost

List the supported hardware with some remarks. This page should grow in
the future.

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8096>

docs/drivers/panfrost.rst

@@ -0,0 +1,31 @@
+Panfrost
+========
+
+The Panfrost driver stack includes a **non-conformant** OpenGL ES
+implementation for Arm Mali GPUs based on the Midgard and Bifrost
+microarchitectures. The following GPUs are currently supported:
+
+=========  ============ ============ =======
+Product    Architecture OpenGL ES    OpenGL
+=========  ============ ============ =======
+Mali T720  Midgard (v4) 2.0          2.1
+Mali T760  Midgard (v5) 3.0          2.1
+Mali T820  Midgard (v5) 3.0          2.1
+Mali T860  Midgard (v5) 3.0          2.1
+Mali G72   Bifrost (v6) 2.0          2.1
+Mali G31   Bifrost (v7) 2.0          2.1
+Mali G52   Bifrost (v7) 2.0          2.1
+=========  ============ ============ =======
+
+Other Midgard and Bifrost chips (T604, T620, T830, T880, G71, G51, G76) may
+work but may be buggy. End users are advised against using Panfrost on
+unsupported hardware. Developers interested in porting will need to allowlist
+the hardware (``src/gallium/drivers/panfrost/pan_screen.c``).
+
+Older Mali chips based on the Utgard architecture (Mali 200, Mali 400) are
+supported in the Lima driver, not Panfrost. Lima is also available in Mesa.
+
+Work to enable OpenGL ES 3.1 and OpenGL 3.1 is on-going for architectures v5
+and later (Mali T760 and newer).
+
+Other graphics APIs (Vulkan, OpenCL) are not supported at this time.

docs/index.rst

@@ -85,6 +85,7 @@ and other operating systems.
    drivers/freedreno
    drivers/llvmpipe
    drivers/openswr
+   drivers/panfrost
    drivers/v3d
    drivers/vc4
    drivers/vmware-guest