Re: [PATCH] Revert "amd/amdgpu: Disable VCN DPG mode for Picasso"

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Alex

On Thu, Mar 11, 2021 at 9:20 AM Alex Deucher <alexander.deucher@xxxxxxx> wrote:
>
> This reverts commit c6d2b0fbb893d5c7dda405aa0e7bcbecf1c75f98.
>
> This patch is a workaround for a hardware bug, but I don't
> know that we've actually seen the hw bug triggered in practice,
> meanwhile a number of people have reported that this causes
> suspend and resume issues.
>
> Bug: https://bugzilla.kernel.org/show_bug.cgi?id=211277
> Cc: Veerabadhran Gopalakrishnan <veerabadhran.gopalakrishnan@xxxxxxx>
> Cc: Leo Liu <leo.liu@xxxxxxx>
> Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
> ---
>  drivers/gpu/drm/amd/amdgpu/soc15.c | 3 ++-
>  1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/soc15.c b/drivers/gpu/drm/amd/amdgpu/soc15.c
> index 3808402cd964..1a0c3a816863 100644
> --- a/drivers/gpu/drm/amd/amdgpu/soc15.c
> +++ b/drivers/gpu/drm/amd/amdgpu/soc15.c
> @@ -1405,7 +1405,8 @@ static int soc15_common_early_init(void *handle)
>
>                         adev->pg_flags = AMD_PG_SUPPORT_SDMA |
>                                 AMD_PG_SUPPORT_MMHUB |
> -                               AMD_PG_SUPPORT_VCN;
> +                               AMD_PG_SUPPORT_VCN |
> +                               AMD_PG_SUPPORT_VCN_DPG;
>                 } else {
>                         adev->cg_flags = AMD_CG_SUPPORT_GFX_MGCG |
>                                 AMD_CG_SUPPORT_GFX_MGLS |
> --
> 2.29.2
>
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