From de973315dd0aa213c20587d8daab2a5b1a01b020 Mon Sep 17 00:00:00 2001
From: Stylon Wang <stylon.wang@amd.com>
Date: Mon, 24 Oct 2022 15:36:16 +0800
Subject: drm/amd/display: Fix access timeout to DPIA AUX at boot time
Git-commit: 0d502ef8898b3983eef9e40f50dfe100a0de5d93
Patch-mainline: v6.1-rc6
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849
[Why]
Since introduction of patch "Query DPIA HPD status.", link detection at
boot could be accessing DPIA AUX, which will not succeed until
DMUB outbox messaging is enabled and results in below dmesg logs:
[ 160.840227] [drm:amdgpu_dm_process_dmub_aux_transfer_sync [amdgpu]] *ERROR* wait_for_completion_timeout timeout!
[How]
Enable DMUB outbox messaging before link detection at boot time.
Reviewed-by: Wayne Lin <Wayne.Lin@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 12 ++++++------
1 file changed, 6 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 6462c6e50eb8..3fd69832fb58 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1634,12 +1634,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
}
}
- if (amdgpu_dm_initialize_drm_device(adev)) {
- DRM_ERROR(
- "amdgpu: failed to initialize sw for display support.\n");
- goto error;
- }
-
/* Enable outbox notification only after IRQ handlers are registered and DMUB is alive.
* It is expected that DMUB will resend any pending notifications at this point, for
* example HPD from DPIA.
@@ -1647,6 +1641,12 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
if (dc_is_dmub_outbox_supported(adev->dm.dc))
dc_enable_dmub_outbox(adev->dm.dc);
+ if (amdgpu_dm_initialize_drm_device(adev)) {
+ DRM_ERROR(
+ "amdgpu: failed to initialize sw for display support.\n");
+ goto error;
+ }
+
/* create fake encoders for MST */
dm_dp_create_fake_mst_encoders(adev);
--
2.38.1