[RFC 2/2] drm/amd: Extend ASPM disablement for Intel Sapphire rapids host + AMD dGPU

[Alex Deucher]

On Wed, Jul 5, 2023 at 2:07 PM Mario Limonciello
<mario.limonciello at amd.com> wrote:
>
> Sapphire rapids is reported to have problems with Navi3x dGPUs where the
> screen freezes and the following message is in the logs:
> ```
> [CRTC:56:crtc-0] flip_done timed out
> ```
>
> These issues go away when ASPM has been disabled. Extend the disablement
> for Sapphire Rapids.
>
> Reported-by: Koba Ko <koba.ko at canonical.com>
> Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/2663
> Signed-off-by: Mario Limonciello <mario.limonciello at amd.com>

Series is:
Acked-by: Alex Deucher <alexander.deucher at amd.com>

> ---
>  drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index ef22a0a6065e..e9206993c743 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -1476,6 +1476,11 @@ static bool amdgpu_device_aspm_support_quirk(void)
>          *   c08c079692da0 ("drm/amdgpu/nv: Apply ASPM quirk on Intel ADL + AMD Navi")
>          */
>         case INTEL_FAM6_ALDERLAKE:
> +       /* Problems reported for Sapphire Rapids
> +        * Navi 3x:
> +        *   https://gitlab.freedesktop.org/drm/amd/-/issues/2663
> +        */
> +       case INTEL_FAM6_SAPPHIRERAPIDS_X:
>                 return false;
>         }
>  #endif
> --
> 2.34.1
>