Re: [PATCH] mmc: sd: Handle UHS-I voltage signaling without power cycle

["Mendez, Judith" <jm@ti.com>]

Hi Peng, Tanmay,

On 7/13/2026 5:21 AM, Peng Fan wrote:
> Hi Tanmay,
> 
>> Subject: Re: [PATCH] mmc: sd: Handle UHS-I voltage signaling without
>> power cycle
>>
> ....
>>
>> I worked with Judith Mendez to get to the bottom of this - she shared
>> logs from the AM65 IDK board and we went back and forth analyzing
>> them, which pointed to a board-level power sequencing problem on
>> AM65x rather than an issue with this patch. In her words:
>> "So it is truly a power issue, I have a patch to fix the issue on am65x.
>> There is nothing wrong with your patch, coincidentally my power issue
>> caused am65x to fall into a weird state and your commit caught that.
>> So actually, thanks. I can now send my proper fix to the u-boot mailing
>> list."
>>
>> So this patch did not introduce a regression - it actually helped uncover
>> a latent power-sequencing issue on the AM65x board that was
>> independent of this change. Judith will be sending a separate fix for the
>> AM65x board issue.
> 
> Thanks for the updating.
> 
> Thanks,
> Peng
> 
>>
>> I'd consider this matter closed with respect to this patch. Thanks Judith
>> for digging into this and confirming the root cause.
>>

Confirm on the above. No problem, thanks to you for the collab (:

~ Judith