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drm/amd: fix gfx hang on renoir in IGT reload test

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[why]
CP hangs in igt reloading test on renoir, more precisely, hangs on the
second time insmod.

[how]
mode2 reset can make it recover, and mode2 reset only effects gfx core,
dcn and the screen will not be impacted.

Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Tianci.Yin <tianci.yin@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tianci.Yin 2022-03-10 21:12:49 +08:00 committed by Alex Deucher
parent 85ac2021fe
commit 72a98763b4
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/amd/amdgpu/soc15.c
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@ -853,6 +853,10 @@ static bool soc15_need_reset_on_init(struct amdgpu_device *adev)
{
u32 sol_reg;
/* CP hangs in IGT reloading test on RN, reset to WA */
if (adev->asic_type == CHIP_RENOIR)
return true;
/* Just return false for soc15 GPUs. Reset does not seem to
* be necessary.
*/