diff options
| author | Lijo Lazar <lijo.lazar@amd.com> | 2024-01-20 13:32:51 +0530 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-01-25 15:41:57 -0500 |
| commit | 90751bdeee4e3ac87ebf814bf282b0fa97edfeab (patch) | |
| tree | bfb9f2b5d90a53c3d261513c3c6d9db102dc5c62 | |
| parent | ca1ffb174f16b699c536734fc12a4162097c49f4 (diff) | |
| download | linux-90751bdeee4e3ac87ebf814bf282b0fa97edfeab.tar.gz | |
drm/amdgpu: Avoid fetching vram vendor information
For GFX 9.4.3 APUs, the current method of fetching vram vendor
information is not reliable. Avoid fetching the information.
Signed-off-by: Lijo Lazar <lijo.lazar@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.7.x
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index f9039d64ff2d72..17b7a25121b00e 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1950,7 +1950,8 @@ static void gmc_v9_4_3_init_vram_info(struct amdgpu_device *adev) static const u32 regBIF_BIOS_SCRATCH_4 = 0x50; u32 vram_info; - if (!amdgpu_sriov_vf(adev)) { + /* Only for dGPU, vendor informaton is reliable */ + if (!amdgpu_sriov_vf(adev) && !(adev->flags & AMD_IS_APU)) { vram_info = RREG32(regBIF_BIOS_SCRATCH_4); adev->gmc.vram_vendor = vram_info & 0xF; } |