Re: [PATCH v2 6/7] phy: qualcomm: phy-qcom-qmp-ufs: Add High Speed Gear 5 support for SM8550

neil.armstrong
2023-11-10T19:34:20Z

On 10/11/2023 10:32, Can Guo wrote:
> Hi Neil,
>
> On 11/10/2023 5:17 PM, neil.armstrong@linaro.org wrote:
>> Hi,
>>
>> On 10/11/2023 10:03, Can Guo wrote:
>>> Hi Neil,
>>>
>>> On 11/10/2023 4:47 PM, neil.armstrong@linaro.org wrote:
>>>> Hi,
>>>>
>>>> On 07/11/2023 05:46, Can Guo wrote:
>>>>> From: Can Guo <quic_cang@quicinc.com>
>>>>>
>>>>> On SM8550, two sets of UFS PHY settings are provided, one set is to support
>>>>> HS-G5, another set is to support HS-G4 and lower gears. The two sets of PHY
>>>>> settings are programming different values to different registers, mixing
>>>>> the two sets and/or overwriting one set with another set is definitely not
>>>>> blessed by UFS PHY designers. In order to add HS-G5 support for SM8550, we
>>>>> need to split the two sets into their dedicated tables, and leave only the
>>>>> common settings in the .tlbs. To have the PHY programmed with the correct
>>>>> set of PHY settings, the submode passed to PHY driver must be either HS-G4
>>>>> or HS-G5.
>>>>
>>>> I guess I'll need to rebase my SM8650 UFS PHY driver to support both G4 and G5 modes
>>>> at some point ?
>>>
>>>
>>> Thank for reaching out. Yes, please.
>>>
>>> I can help review the PHY settings.
>>
>> Ok I'll try rebasing on this serie and add G5 support.
>>
>>>
>>> BTW, are you enabling MCQ (by adding MCQ related DT) at the same time?
>>
>> I tested MCQ but it triggers the same issues we have with suspend/resume on SM8550 & SM8650,
>> and the bindings are not present of the UFS qcom node.
>
> Are you talking about suspend/resume fail with rpm/spm_lvl == 5? If yes, then Nitin and Naveen are working on fixing it.

Exact, if you have some changes for me to test, I'll be happy to have a run on 8550 and 8650.

>
> If you have plan to enable UFS MCQ on SM8650 later, please let me know, I have some BUG fixes for it, we can co-work.

Yes I plan to when basic SM8650 support gets merged, same I'm able to test some changes if needed.

Neil

>
> Thanks,
> Can Guo
>
>>
>> Neil
>>
>>>
>>> Thanks,
>>> Can Guo.
>>>
>>>>
>>>> Neil
>>>>
>>