amdgpu: several powerplay errors during boot of HAWAII PRO GPU

[Kai Wasserbäch]

[Please CC me on replies, I'm not subscribed to amd-gfx.]

Hey Alex,
Alex Deucher wrote on 23.11.18 21:22:
> On Fri, Nov 23, 2018 at 5:28 AM Kai Wasserbäch <kai at dev.carbon-project.org> wrote:
>> with the recent 4.19.x series of kernels I'm seeing several errors being logged
>> during boot for my R9 290 (HAWAII PRO) GPU:
>>> [   50.057264] amdgpu: [powerplay] Failed to retrieve minimum clocks.
>>> [   50.057266] amdgpu: [powerplay] Error in phm_get_clock_info
>>> [   50.057309] [drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS with error code 4!
>>> [   50.057316] [drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS with error code 4!
>>> [   50.057324] [drm] dce110_link_encoder_construct: Failed to get encoder_cap_info from VBIOS with error code 4!
> 
> These are harmless.

ok, thanks. Maybe the error messages could be improved to indicate that they
aren't serious? Something along the lines of "Failed to retrieve minimum clocks,
falling back to $foo."?

>>> [   51.611918] amdgpu: [powerplay]
>>>                 failed to send message 282 ret is 254
> 
> These may be fixed by this patch if you are using an older pcie gen1/2 platform:
> https://patchwork.freedesktop.org/patch/259364/

I've applied that patch on top of 4.19.4 but I'm still seeing:
  [   17.407112] amdgpu: [powerplay]
                  failed to send message 282 ret is 254
And as far as I know, I do have PCIe Gen3:
  [   14.992861] [drm] PCIE gen 3 link speeds already enabled

Cheers,
Kai

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