[PATCH] drm/amd/pm: disable BACO entry/exit completely on several sienna cichlid cards

[Lazar, Lijo]

On 9/7/2022 6:03 PM, Guchun Chen wrote:
> To avoid hardware intermittent failures.
> 
> Signed-off-by: Guchun Chen <guchun.chen at amd.com>

Reviewed-by: Lijo Lazar <lijo.lazar at amd.com>

Thanks,
Lijo

> ---
>   .../gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c   | 11 +++++++++++
>   1 file changed, 11 insertions(+)
> 
> diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> index 7ed4d4265797..74996a8fb671 100644
> --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c
> @@ -369,6 +369,17 @@ static void sienna_cichlid_check_bxco_support(struct smu_context *smu)
>   		smu_baco->platform_support =
>   			(val & RCC_BIF_STRAP0__STRAP_PX_CAPABLE_MASK) ? true :
>   									false;
> +
> +		/*
> +		 * Disable BACO entry/exit completely on below SKUs to
> +		 * avoid hardware intermittent failures.
> +		 */
> +		if (((adev->pdev->device == 0x73A1) &&
> +		    (adev->pdev->revision == 0x00)) ||
> +		    ((adev->pdev->device == 0x73BF) &&
> +		    (adev->pdev->revision == 0xCF)))
> +			smu_baco->platform_support = false;
> +
>   	}
>   }
>   
>