RE: [PATCH] drm/i915/display/dp: Remove UHBR13.5 for icl

[Jani Nikula <jani.nikula@intel.com>]

On Wed, 08 May 2024, "Murthy, Arun R" <arun.r.murthy@intel.com> wrote:
>> -----Original Message-----
>> From: Nikula, Jani <jani.nikula@intel.com>
>> Sent: Wednesday, May 8, 2024 3:29 PM
>> To: Murthy, Arun R <arun.r.murthy@intel.com>; Ville Syrjälä
>> <ville.syrjala@linux.intel.com>
>> Cc: intel-gfx@lists.freedesktop.org
>> Subject: RE: [PATCH] drm/i915/display/dp: Remove UHBR13.5 for icl
>>
>> On Wed, 08 May 2024, "Murthy, Arun R" <arun.r.murthy@intel.com> wrote:
>> > This is the limitation from the retimer hardware.
>>
>> The commit message needs to reflect this.
>>
>> Do all units have a retimer with the limitation? Or could you have a DG2
>> without the limitation? Do we need to check for that instead of blanket removal
>> of UHBR 13.5 for DG2?
>>
> Changed the commit msg as below
>
> Display 12+ hardware supports UHBR13.5

Not true.

> but due to the retimer constraints platform doesn't support UHBR13.5.

Which platform?

> This is the same for mtl and UHBR13.5 is removed as part of the commit caf3d748f646 ("drm/i915/dp: Remove support for UHBR13.5")
> This patch removes UHBR13.5 support for icl/dg2.

ICL does not support UHBR 13.5.

BR,
Jani.

>
> Thanks and Regards,
> Arun R Murthy
> --------------------
>> BR,
>> Jani.
>>
>>
>> --
>> Jani Nikula, Intel

-- 
Jani Nikula, Intel