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Date:   Wed, 16 Nov 2022 23:11:58 +0100
From:   Andreas Kemnade <andreas@kemnade.info>
To:     linux-omap@vger.kernel.org
Subject: omap4-keypad mystery
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Hi,

I am investigating how to use the omap4 keypad driver in dts and I am quite
confused. Nobody seems to add any pinmux to it. Why?

I muxed the rows0-3 and cols0-3 to MODE1 without any wakeup.

When I set /sys/bus/platform/devices/4a31c000.keypad/power/control
to on I get keypad interrupts and events in evtest. but with it set to auto,
nothing happens. Setting the rows pinmux to 0x4119 instead of 0x119 does not
change anything.

Nobody seems to add provisions to wake up independently of the keypad
hwmod which seems to be odd. I would expect interrupt-extended along with
the keypad definitions.

Confused,
Andreas