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SubjectRe: [PATCH] mmc: mmc_spi: Use proper debounce time for CD GPIO
On Fri, Nov 8, 2019 at 5:09 PM Thierry Reding <> wrote:

> From: Thierry Reding <>
> According to the comment, board files used to specify 1 ms for the
> debounce time. gpiod_set_debounce() needs the debounce time to be
> specified in units of microseconds, so make sure to multiply the value
> by 1000.
> Note that, according to the git log, the board files actually did
> specify 1 us for bounce times, but that seems really low. Device tree
> bindings for this type of GPIO typically specify the debounce times in
> milliseconds, so setting this default value to 1 ms seems like it would
> be somewhat safer.
> Signed-off-by: Thierry Reding <>

Makes perfect sense.
Reviewed-by: Linus Walleij <>

Linus Walleij

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