[AMD Official Use Only - General]
Reviewed-by: Evan Quan <evan.q...@amd.com>
> -----Original Message-----
> From: Chen, Guchun <guchun.c...@amd.com>
> Sent: Wednesday, September 7, 2022 12:53 PM
> To: amd-gfx@lists.freedesktop.org; Deucher, Alexander
> <alexander.deuc...@amd.com>; Zhang, Hawking
> <hawking.zh...@amd.com>; Lazar, Lijo <lijo.la...@amd.com>; Quan, Evan
> <evan.q...@amd.com>; Feng, Kenneth <kenneth.f...@amd.com>
> Cc: Chen, Guchun <guchun.c...@amd.com>
> Subject: [PATCH] Revert "drm/amdgpu: drop runtime pm disablement quirk
> on several sienna cichlid cards"
>
> This reverts commit e2994d23d8afa2fb465fdb8cf544b736f67ab8ba.
>
> Frequent BACO enter/exit will cause EMI failure, so disable runtime PM
> on these server SKUs.
>
> Signed-off-by: Guchun Chen <guchun.c...@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 13 +++++++++++++
> 1 file changed, 13 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> index 1369c25448dc..4f6473faaf24 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
> @@ -43,6 +43,17 @@
> #include "amdgpu_display.h"
> #include "amdgpu_ras.h"
>
> +static void amdgpu_runtime_pm_quirk(struct amdgpu_device *adev)
> +{
> + /*
> + * Add below quirk on several sienna_cichlid cards to disable
> + * runtime pm to fix EMI failures.
> + */
> + if (((adev->pdev->device == 0x73A1) && (adev->pdev->revision ==
> 0x00)) ||
> + ((adev->pdev->device == 0x73BF) && (adev->pdev->revision ==
> 0xCF)))
> + adev->pm.rpm_mode = AMDGPU_RUNPM_NONE;
> +}
> +
> void amdgpu_unregister_gpu_instance(struct amdgpu_device *adev)
> {
> struct amdgpu_gpu_instance *gpu_instance;
> @@ -176,6 +187,8 @@ int amdgpu_driver_load_kms(struct amdgpu_device
> *adev, unsigned long flags)
> break;
> }
>
> + amdgpu_runtime_pm_quirk(adev);
> +
> if (adev->pm.rpm_mode == AMDGPU_RUNPM_BACO)
> dev_info(adev->dev, "Using BACO for runtime
> pm\n");
> }
> --
> 2.25.1
