s2idle not working

[S, Shirish]

Please mail your query to amd-gfx at lists.freedesktop.org<mailto:amd-gfx at lists.freedesktop.org> .



Regards,
Shirish S

From: shahul hameed <shahulhameed.481 at gmail.com>
Sent: Wednesday, February 20, 2019 3:14 PM
To: S, Shirish <Shirish.S at amd.com>
Subject: s2idle not working

Hi Shirish

I am porting Android_N and keenel 4.19.2 to Ryzen platform. Graphic card is gfx9.
Porting is done successfully. Now i am working on suspend/resume.
Suspend/resume is working fine in deep mode.
But suspend/resume is not working in s2idle (Suspend to idle) mode.

during resume i found error in gpu driver.

[  105.862161] [drm:gfx_v9_0_hw_init [amdgpu]] *ERROR* KCQ enable failed (scratch(0xC040)=0xCAFEDEAD)
[  105.862187] [drm:amdgpu_device_ip_resume_phase2 [amdgpu]] *ERROR* resume of IP block <gfx_v9_0> failed -22
[  105.862210] [drm:amdgpu_device_resume [amdgpu]] *ERROR* amdgpu_device_ip_resume failed (-22).
[  105.862215] dpm_run_callback(): pci_pm_resume+0x0/0xd6 returns -22
[  105.862345] PM: Device 0000:03:00.0 failed to resume async: error -22

same issue is reproduced with ubuntu16.04.

Can you please help me to resolve this issue.
Thanks in Advance,
Regards,
Sk shahul.
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