[PATCH] drm/radeon: Fix GPU lockups for the R7 M270

[Alex Deucher]

On Sat, Mar 11, 2017 at 11:21 AM, Umang Raghuvanshi <u at umangis.me> wrote:
> Commit 3a69adfe5617 ("drm/radeon: drop oland quirks") removed
> quirks for Oland but also caused a regression where M270 GPUs
> would go into a lock-up when OpenGL intensive applications were used.
> This reverts the change only for the M270 and fixes the lock-ups.

Does your kernel have this patch:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef736d394e85b1bf1fd65ba5e5257b85f6c82325

Alex

>
> Signed-off-by: Umang Raghuvanshi <u at umangis.me>
> ---
>  drivers/gpu/drm/radeon/si_dpm.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
> index d12b8978142f..c2c129eef3c4 100644
> --- a/drivers/gpu/drm/radeon/si_dpm.c
> +++ b/drivers/gpu/drm/radeon/si_dpm.c
> @@ -2984,6 +2984,11 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
>                     (rdev->pdev->device == 0x6667)) {
>                         max_sclk = 75000;
>                 }
> +       } else if (rdev->family == CHIP_OLAND && rdev->pdev->device == 0x6604 &&
> +                  rdev->pdev->revision == 0) {
> +               // Fix max_sclk and max_mclk for the Radeon R7 M270
> +               max_sclk = 75000;
> +               max_mclk = 80000;
>         }
>
>         if (rps->vce_active) {
> --
> 2.12.0
>
>
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