Commit 90751bde authored by Lijo Lazar's avatar Lijo Lazar Committed by Alex Deucher
Browse files

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: 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 # 6.7.x
parent ca1ffb17

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

+2 −1
Original line number Diff line number Diff line
@@ -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;

	}