Re: [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.c...@amd.com>

Reviewed-by: Lijo Lazar <lijo.la...@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;
+
        }
  }