Re: [PATCH v6 05/13] mmc: arm_pl180: Set initial supply voltages

Linus Walleij <[email protected]>
Newsgroups org.u-boot-project.lists.u-boot
Message-ID <CAD++jLmh-fYQsAt=7Js+Lz9yKLy1zAE5j8t0JqR6PkfqUeA3Lg@mail.gmail.com>
On Tue, Aug 25, 2026 at 9:04 PM Linus Walleij <[email protected]> wrote:

> Obtain the optional vmmc and vqmmc regulators and configure them for
> the normal SD voltage range before card initialization.
>
> Request the standard 3.3 V target within the allowed 2.7-3.6 V range.
> The regulator clamp operation lets regulators with discrete selectors
> choose the closest supported voltage. This selects 2.91 V on AB8500 and
> 3.05 V on AB8505.
>
> Ignore the unsupported set-value operation for fixed regulators; their
> voltage is already described by their fixed constraints.
>
> Signed-off-by: Linus Walleij <[email protected]>

CC the MMC maintainers too. Will fix for next iteration, sorry :(

Yours,
Linus Walleij
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