RE: [PATCH v2] drm/amd/pm: enable LCLK DS

["Quan, Evan" <Evan.Quan@xxxxxxx>]

[AMD Official Use Only - Internal Distribution Only]

Reviewed-by: Evan Quan <evan.quan@xxxxxxx>

-----Original Message-----
From: amd-gfx <amd-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Kenneth Feng
Sent: Sunday, February 7, 2021 11:16 AM
To: amd-gfx@xxxxxxxxxxxxxxxxxxxxx
Cc: Feng, Kenneth <Kenneth.Feng@xxxxxxx>
Subject: [PATCH v2] drm/amd/pm: enable LCLK DS

v1:
Enable LCLK deep sleep and it works if we enable ASPM:
modprobe amdgpu aspm=1

v2:
Add the amdgpu_aspm flag check

Signed-off-by: Kenneth Feng <kenneth.feng@xxxxxxx>
---
 drivers/gpu/drm/amd/pm/swsmu/smu11/sienna_cichlid_ppt.c | 3 +++
 1 file changed, 3 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 b9e47f3b0231..af73e1430af5 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
@@ -302,6 +302,9 @@ sienna_cichlid_get_allowed_feature_mask(struct smu_context *smu,
 if (smu->dc_controlled_by_gpio)
        *(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_ACDC_BIT);

+if (amdgpu_aspm == 1)
+*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_LCLK_BIT);
+
 return 0;
 }

--
2.17.1

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