At bit more on being unable to map GPIO 20 via gpio-key:
I get this in the kernel log:
Code:
--------------------
[ 23.481474] input: button@14 as /devices/platform/button@14/input/input0
[ 23.657371] input: button@10 as /devices/platform/button@10/input/input1
[ 23.690642] input: button@6 as /devices/platform/button@6/input/input2
[ 23.691525] input: button@5 as /devices/platform/button@5/input/input3
[ 24.499870] pinctrl-bcm2835 20200000.gpio: pin gpio20 already requested by
button@14; cannot claim for 20203000.i2s
[ 24.499887] pinctrl-bcm2835 20200000.gpio: pin-20 (20203000.i2s) status -22
[ 24.499898] pinctrl-bcm2835 20200000.gpio: could not request pin 20
(gpio20) from group gpio20 on device pinctrl-bcm2835
[ 24.499906] bcm2835-i2s 20203000.i2s: Error applying setting, reverse
things back
--------------------
I'm using a Pi Zero W, by the way.
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