From: Lijo Lazar Date: Sat, 20 Jan 2024 08:02:51 +0000 (+0530) Subject: drm/amdgpu: Avoid fetching vram vendor information X-Git-Tag: microblaze-v6.10~28^2~26^2~120 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=e0eb08dcec0ffc146f1522b5c6503fdea2f5ca4d;p=linux-2.6-microblaze.git 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 Reviewed-by: Hawking Zhang Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c index 9bff72356a37..a3a11538207b 100644 --- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c @@ -1952,7 +1952,8 @@ 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; }