diff options
| author | Yo-Jung Leo Lin (AMD) <Leo.Lin@amd.com> | 2025-12-12 15:59:17 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-01-05 16:59:58 -0500 |
| commit | 5946dbe1c802efef3b12a4eecab1471f725f4ca9 (patch) | |
| tree | 7b8e7d4ac03d34885ff46a0b4e1ff895ab2a1738 /Documentation/gpu/amdgpu | |
| parent | 19ba61ac06d2a4f1e58f92879b54a998ab23b4b1 (diff) | |
Documentation/amdgpu: Add UMA carveout details
Add documentation for the uma/carveout_options and uma/carveout
attributes in sysfs
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Yo-Jung Leo Lin (AMD) <Leo.Lin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'Documentation/gpu/amdgpu')
| -rw-r--r-- | Documentation/gpu/amdgpu/driver-misc.rst | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/Documentation/gpu/amdgpu/driver-misc.rst b/Documentation/gpu/amdgpu/driver-misc.rst index 25b0c857816e..e1a964c3add2 100644 --- a/Documentation/gpu/amdgpu/driver-misc.rst +++ b/Documentation/gpu/amdgpu/driver-misc.rst @@ -128,3 +128,29 @@ smartshift_bias .. kernel-doc:: drivers/gpu/drm/amd/pm/amdgpu_pm.c :doc: smartshift_bias + +UMA Carveout +============ + +Some versions of Atom ROM expose available options for the VRAM carveout sizes, +and allow changes to the carveout size via the ATCS function code 0xA on supported +BIOS implementations. + +For those platforms, users can use the following files under uma/ to set the +carveout size, in a way similar to what Windows users can do in the "Tuning" +tab in AMD Adrenalin. + +Note that for BIOS implementations that don't support this, these files will not +be created at all. + +uma/carveout_options +-------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c + :doc: uma/carveout_options + +uma/carveout +-------------------- + +.. kernel-doc:: drivers/gpu/drm/amd/amdgpu/amdgpu_device.c + :doc: uma/carveout |