Hi Felix,


Hmm, it's unfortunate because I haven't been able to reproduce any hangs on my AM4 based Carrizo.  What specific tests are you running when it hangs?


Cheers,

Tom


________________________________
From: Kuehling, Felix
Sent: Monday, August 8, 2016 13:57
To: amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org; StDenis, Tom
Subject: Re: [PATCH 09/14] drm/amd/amdgpu: Enable carrizo GFX PG

We're reverting this commit on the KFD branch because it's causing hangs
on a bunch of HSA compute tests on CZ.

Regards,
  Felix


On 16-07-28 10:19 AM, Tom St Denis wrote:
> Signed-off-by: Tom St Denis <tom.stdenis-5C7GfCeVMHo@public.gmane.org>
> ---
>  drivers/gpu/drm/amd/amdgpu/vi.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/vi.c b/drivers/gpu/drm/amd/amdgpu/vi.c
> index 9ba64989f092..4fa9fea541a5 100644
> --- a/drivers/gpu/drm/amd/amdgpu/vi.c
> +++ b/drivers/gpu/drm/amd/amdgpu/vi.c
> @@ -1578,7 +1578,13 @@ static int vi_common_early_init(void *handle)
>                        AMD_CG_SUPPORT_HDP_LS |
>                        AMD_CG_SUPPORT_SDMA_MGCG |
>                        AMD_CG_SUPPORT_SDMA_LS;
> +             /* rev0 hardware requires workarounds to support PG */
>                adev->pg_flags = 0;
> +             if (adev->rev_id != 0x00) {
> +                     adev->pg_flags |= AMD_PG_SUPPORT_GFX_PG |
> +                             AMD_PG_SUPPORT_GFX_SMG |
> +                             AMD_PG_SUPPORT_GFX_PIPELINE;
> +             }
>                adev->external_rev_id = adev->rev_id + 0x1;
>                break;
>        case CHIP_STONEY: