Commit 55173942 authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

drm/amdgpu: Avoid fetching VRAM vendor info 



The present way to fetch VRAM vendor information turns out to be not
reliable on GFX 9.4.3 dGPUs as well. Avoid using the data.

Signed-off-by: default avatarLijo Lazar <lijo.lazar@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
parent 29c5da1a

drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c

+0 −8
Original line number Diff line number Diff line
@@ -1947,14 +1947,6 @@ static int gmc_v9_0_init_mem_ranges(struct amdgpu_device *adev) 


static void gmc_v9_4_3_init_vram_info(struct amdgpu_device *adev)

{

	static const u32 regBIF_BIOS_SCRATCH_4 = 0x50;

	u32 vram_info;



	/* 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;

	}

	adev->gmc.vram_type = AMDGPU_VRAM_TYPE_HBM;

	adev->gmc.vram_width = 128 * 64;

}