[PATCH] drm/amd/pm: Increase SMUv13.0.6 mode-2 reset time

[Kamal, Asad]

[AMD Official Use Only - General]

Reviewed-by: Asad Kamal <asad.kamal at amd.com>

Thanks & Regards
Asad

-----Original Message-----
From: Lazar, Lijo <Lijo.Lazar at amd.com>
Sent: Monday, February 26, 2024 4:08 PM
To: amd-gfx at lists.freedesktop.org
Cc: Zhang, Hawking <Hawking.Zhang at amd.com>; Deucher, Alexander <Alexander.Deucher at amd.com>; Kamal, Asad <Asad.Kamal at amd.com>
Subject: [PATCH] drm/amd/pm: Increase SMUv13.0.6 mode-2 reset time

On SOCs with SMUv13.0.6, mode-2 reset takes a bit longer. Wait for 200ms before trying to restore config space after mode-2 reset.

Signed-off-by: Lijo Lazar <lijo.lazar at amd.com>
---
 drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
index 29c102fe650d..2b7a60b23d6b 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_6_ppt.c
@@ -2307,8 +2307,8 @@ static int smu_v13_0_6_mode2_reset(struct smu_context *smu)
        ret = smu_cmn_send_msg_without_waiting(smu, (uint16_t)index,
                                               SMU_RESET_MODE_2);

-       /* This is similar to FLR, wait till max FLR timeout */
-       msleep(100);
+       /* Reset takes a bit longer, wait for 200ms. */
+       msleep(200);

        dev_dbg(smu->adev->dev, "restore config space...\n");
        /* Restore the config space saved during init */
--
2.25.1