Re: [PATCH 2/2] mmc: core: sdio: skip CMD11 if signalling is already 1.8V

[Deomid "rojer" Ryabkov]

Hi Shawn,

agreed, will send a v2 with all the updates



On Tue, 27 Oct 2026 at 13:53, Shawn Lin <shawn.lin@xxxxxxxxx> wrote:
>
> Hi Deomid
>
> 在 2026/10/27 星期二 19:00, Deomid "rojer" Ryabkov 写道:
> > On Mon, 26 Oct 2026 at 08:35, llj@xxxxxxxxxxxxxx <llj@xxxxxxxxxxxxxx> wrote:
> >> With this patch, swt6621s can skip CMD11 and successfully
> >> enable UHS mode.
> >>
> >> Tested-by: Longjian Lin <llj@xxxxxxxxxxxxxx>
> >
> > thanks for testing, Longjian! so in your case it's even worse: without
> > the patch doesn't come up at all. good to know that now it does.
> > note that your reply didn't reach the list (vger drops HTML-only
> > mail). i'm quoting it here for but if you can, please re-send it in
> > plain text again, with full context.
> >
> > Shawn, thanks for the reviews! you're right about the soft-reset vs
> > power cycle: card is soft-reset, not power-cycled.
>
> Just to mention that vqmmc is optional, so if not vqmmc-supply in DT,
> the voltage is hardwired to 1.8V, then this patch doesn't help.
>
> I'm inclined to add vqmmc dependency to the commit msg of this patch as
> well. What's your opinion?
>
>
> >
> > Ulf, if there are no other comments, please s/power-cycle the
> > card/reset the card/ in 1/2 when applying. sounds like we're
> > converging on 2a, so the alt patch can be dropped. or, if you prefer a
> > single cleaned up patch set, please let me know.
> >
>


--
Deomid "rojer" Ryabkov
rojer@xxxxxxxx