Re: [PATCH i-g-t, v4] tests/intel/xe_pm: Add tests for suspend without display

["Sundaresan, Sujaritha" <sujaritha.sundaresan@intel.com>]

On 9/11/2024 8:40 PM, Jani Nikula wrote:
> On Wed, 11 Sep 2024, "Sundaresan, Sujaritha" <sujaritha.sundaresan@intel.com> wrote:
>> On 8/28/2024 2:16 PM, Sundaresan, Sujaritha wrote:
>>> On 8/27/2024 6:24 PM, Gupta, Anshuman wrote:
>>>>> -----Original Message-----
>>>>> From: Sousa, Gustavo <gustavo.sousa@intel.com>
>>>>> Sent: Tuesday, August 27, 2024 6:18 PM
>>>>> To: De Marchi, Lucas <lucas.demarchi@intel.com>; Gupta, Anshuman
>>>>> <anshuman.gupta@intel.com>; Sundaresan, Sujaritha
>>>>> <sujaritha.sundaresan@intel.com>
>>>>> Cc: Kamil Konieczny <kamil.konieczny@linux.intel.com>; igt-dev@
>>>>> <lists.freedesktop.org igt-dev@lists.freedesktop.org>; Piecielska,
>>>>> Katarzyna
>>>>> <katarzyna.piecielska@intel.com>
>>>>> Subject: RE: [PATCH i-g-t, v4] tests/intel/xe_pm: Add tests for
>>>>> suspend without
>>>>> display
>>>>>
>>>>> Quoting Gupta, Anshuman (2024-08-27 06:29:06-03:00)
>>>>>
>>>>>> For s0ix DC9 is the pre-requisite rather then DC6, DC9 does not have
>>>>>> any depende ncy on DMC.
>>>>> Maybe DC6 and DC9 are pre-requisites for different S0ix sub-states?
>>>>>
>>>>> - BSpec 68851 says that DC6 is requirement for S0ix.
>>>>> - BSpec 68857 says that DC9 supports S0ix with more power savings than
>>>>>     DC6.
>>>> DC6 is pre-requisite for runtime s0ix with PSR Display On use cases.
>>>> Which is irrelevant for system wide suspend.
>>>> Thanks,
>>>> Anshuman.
>>>>> -- 
>>>>> Gustavo Sousa
>>> Hi all,
>>>
>>> Thanks for the comments. So if I have it right the only final change
>>> here is to switch the param to disable_display right ?
>>>
>>> Thanks,
>>>
>>> Suja
>>>
>> Hi all,
>>
>> Gentle ping on the above question.
> disable_display=1 will still keep running display suspend/resume
> paths. You just have all connectors disconnected.
>
> I'm not sure if you can really fully achieve the goal of testing
> suspend/resume without display.
>
>
> BR,
> Jani.

Hi Jani,

So in this case neither disable_display, nor enable_display will work to 
have a truly display free test run ?

Thanks,

Suja

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