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drm/amdgpu/swSMU: correct the bootup power source for Navi1X (v2)

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PMFW may boots those ASICs with DC mode. Need to set it back
to AC mode.

v2: split from Evan's original patch (Alex)

Bug: https://gitlab.freedesktop.org/drm/amd/issues/1043
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Evan Quan 2020-03-20 14:09:21 -04:00 committed by Alex Deucher
parent fa34520c95
commit 66c2f5db1f
1 changed files with 15 additions and 0 deletions
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15
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
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@ -1154,6 +1154,21 @@ static int smu_smc_table_hw_init(struct smu_context *smu,
}
}
}
if (adev->asic_type >= CHIP_NAVI10 &&
adev->asic_type <= CHIP_NAVI12) {
/*
* For Navi1X, manually switch it to AC mode as PMFW
* may boot it with DC mode.
* TODO: should check whether we are indeed under AC
* mode before doing this.
*/
ret = smu_set_power_source(smu, SMU_POWER_SOURCE_AC);
if (ret) {
pr_err("Failed to switch to AC mode!\n");
return ret;
}
}
}
if (adev->asic_type != CHIP_ARCTURUS) {
ret = smu_notify_display_change(smu);