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| author | Alex Deucher <alexander.deucher@amd.com> | 2023-02-09 09:00:02 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2023-02-09 10:30:36 -0500 |
| commit | bf0207e1727031798f300afa17f9bbeceac6da87 (patch) | |
| tree | c0cedd156efade118edca09f67b41eb2613ebbd6 /drivers/gpu/drm/amd/amdgpu/amdgpu.h | |
| parent | 09efa4a0e87776fc1cdc96733e8e55813a377d6a (diff) | |
| download | lwn-bf0207e1727031798f300afa17f9bbeceac6da87.tar.gz lwn-bf0207e1727031798f300afa17f9bbeceac6da87.zip | |
drm/amdgpu: add S/G display parameter
Some users have reported flickerng with S/G display. We've
tried extensively to reproduce and debug the issue on a wide
variety of platform configurations (DRAM bandwidth, etc.) and
a variety of monitors, but so far have not been able to. We
disabled S/G display on a number of platforms to address this
but that leads to failure to pin framebuffers errors and
blank displays when there is memory pressure or no displays
at all on systems with limited carveout (e.g., Chromebooks).
Add a option to disable this as a debugging option as a
way for users to disable this, depending on their use case,
and for us to help debug this further.
v2: fix typo
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu.h')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h index 4e4efd10cb89..164141bc8b4a 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h @@ -242,6 +242,7 @@ extern int amdgpu_num_kcq; #define AMDGPU_VCNFW_LOG_SIZE (32 * 1024) extern int amdgpu_vcnfw_log; +extern int amdgpu_sg_display; #define AMDGPU_VM_MAX_NUM_CTX 4096 #define AMDGPU_SG_THRESHOLD (256*1024*1024) |