Re: [PATCH] button: adc: set state to pressed when the voltage is closest to nominal

On Wed, Feb 02, 2022 at 01:04:04PM -0500, Peter Cai wrote:

In the Linux implementation of adc-keys (drivers/input/keyboard/adc-keys.c), `press-threshold-microvolt` is not really interpreted as a threshold, but rather as the "nominal voltage" of the button. When the voltage read from the ADC is closest to a button's `press-threshold-microvolt`, the button is considered pressed.

This patch reconciles the behavior of button-adc with Linux's adc-keys such that device trees can be synchronized with minimal modifications.

Signed-off-by: Peter Cai peter@typeblog.net

Applied to u-boot/master, thanks!