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

[Shawn Lin]

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.