Re: [PATCH] pinctrl: sunxi: Use minimal debouncing period as default

On Tue, Dec 17, 2024 at 02:41:36PM +0100, Linus Walleij wrote:

On Tue, Nov 19, 2024 at 3:43 PM Maxime Ripard [off-list ref] wrote:

quoted

[Paul]

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The pinctrl code supports an input-debounce device-tree property to set
a specific debouncing period and choose which clock source is most
relevant. However the property is specified in microseconds, which is
longer than the minimal period achievable from the high-frequency
oscillator without a pre-scaler.

That can be fixed by introducing a new property with a ns resolution.

Perhaps, but I think a setting of 0 should just yield the minimum
resolution in this case, as apparently the debounce cannot be
turned off? This would also make sense to expose for
gpiod_set_debounce() as explained in my other mail.

Yeah, if we want to have 0 == lowest resolution, I'm all for it.

Maxime