Re: [PATCH v2 0/3] Add TPM support via Qualcomm TEE TPM TA

[Kuldeep Singh <kuldeep.singh@oss.qualcomm.com>]

>>> Two questions:
>>>
>>>  - Is service 81 expected to appear on retail firmware through an
>>>    update, or is it specific to the CRD firmware?
>>
>> Yes, there's spinor update(bootfw2.mbn) needed which is in progress to
>> publish as QTEE side changes were already merged long back.
>> Roughly it takes ~1month(ideal scenario) to get firmware changes
>> available but somehow it's taking more this time.
>>
>> I think i should have captured this dependency info in my series cover
>> letter to avoid any confusion.
>>
>> With the changes, service uid 81 will be available and won't see qcomtee
>> driver issue log there.
> 
> You are responding to the user who uses a COTS commercial device. Are
> you suggesting that the user can somehow update the firmware on that
> device?

Ahh, for COTS devices as one cannot replace firmware so it's better to
use qseecom path in that case.
For latest ones, one can switch to qcomtee based approach.

If Xilin already has qseecom interface written then it's best to have it
for the COTS devices.

-- 
Regards
Kuldeep