[PATCH v2 2/3] ASoC: cs4265: Fix the reset_gpio polarity

Mark Brown broonie at kernel.org
Tue Jan 4 18:56:30 CET 2022


On Wed, Dec 29, 2021 at 10:11:57AM -0300, Fabio Estevam wrote:
> On Wed, Dec 29, 2021 at 9:43 AM Mark Brown <broonie at kernel.org> wrote:

> > There might be more out of tree users of course - there's no requirement
> > for people to upstream their DTs.  Probably better to play it safe.

> If someone correctly describes the gpio_reset as active-low, then the
> driver will not work.

> If there is any out-of-tree user of the gpio_reset property, they are
> passing the incorrect polarity in the device tree
> and things are working by pure luck. (wrong polarity in dts + wrong
> polarity handling in the driver = working state)

To be honest I think the transparent polarity handling in the GPIO
bindings was a mistake, it's caused no end of problems especially with
signals like this which are active low - it's a nasty gotcha for
conversion to descriptors.

> Ok, if this can't be fixed, then let's drop patches 2 and 3, which is
> unfortunate.

Why drop patch 3?
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