[Intel-gfx] [Intel-xe] [PATCH 27/42] drm/i915/xe2lpd: Read pin assignment from IOM

[Lucas De Marchi]

On Thu, Aug 24, 2023 at 11:34:22AM +0000, Coelho, Luciano wrote:
>On Wed, 2023-08-23 at 10:07 -0700, Lucas De Marchi wrote:
>> From: Luca Coelho <luciano.coelho at intel.com>
>>
>> Starting from display version 20, we need to read the pin assignment
>> from the IOM TCSS_DDI_STATUS register instead of reading it from the
>> FIA.
>>
>> We use the pin assignment to decide the maximum lane count.  So, to
>> support this change, add a new lnl_tc_port_get_max_lane_count() function
>> that reads from the TCSS_DDI_STATUS register and decides the maximum
>> lane count based on that.
>>
>> BSpec: 69594
>> Cc: Mika Kahola <mika.kahola at intel.com>
>> Signed-off-by: Luca Coelho <luciano.coelho at intel.com>
>> Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
>> ---
>
>Lucas, do you want me to send this together with my patchset with the
>preparation for this?
>
>In a way, the 4 patches I sent out can be applied independently of LNL-
>related changes, so maybe I could resend just those 4 patches and you
>base your entire series on top of my patches after they get applied?
>Then this patch, which is really related to LNL could be part of your
>series...

Please get the first 4 patches applied. I can keep this one in this
series. Pasting from the cover letter to make clear we are on the same
page:

         3. Patches 7 through 10 can also be ignored: they are not
            applied yet, but being reviewed in other patch series by its
            author[2].

	[2] https://patchwork.freedesktop.org/series/120980/

The only reason I added them here is that since this series will take
some time to be applied, I figured it would be better not to create
unnecessary conflicts.

thanks
Lucas De Marchi

>
>Let me know what you prefer.
>
>--
>Cheers,
>Luca.