On Thu, May 7, 2020 at 8:38 AM Tom St Denis <tom.stdenis@xxxxxxx> wrote:
>
> On my raven1 system (rev c6) with VBIOS 113-RAVEN-114 GFXOFF is
> not stable (resulting in large block tiling noise in some applications).
>
> Disabling GFXOFF via the quirk list fixes the problems for me.
>
> Signed-off-by: Tom St Denis <tom.stdenis@xxxxxxx>
Acked-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
> drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> index fbd54d347d91..1573ac1f03b2 100644
> --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
> @@ -1233,6 +1233,8 @@ static const struct amdgpu_gfxoff_quirk amdgpu_gfxoff_quirk_list[] = {
> { 0x1002, 0x15dd, 0x1002, 0x15dd, 0xc8 },
> /* https://bugzilla.kernel.org/show_bug.cgi?id=207171 */
> { 0x1002, 0x15dd, 0x103c, 0x83e7, 0xd3 },
> + /* GFXOFF is unstable on C6 parts with a VBIOS 113-RAVEN-114 */
> + { 0x1002, 0x15dd, 0x1002, 0x15dd, 0xc6 },
> { 0, 0, 0, 0, 0 },
> };
>
> --
> 2.26.2
>
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