Re: [PATCH 0/2] Input: gpio-keys - support wakeup pinctrl state

Hello Kendall,

On Sat, Sep 12, 2026 at 04:33:52PM -0500, Kendall Willis wrote:

Add 'wakeup' pinctrl state to support separate pin wakeup
configurations for GPIO. Upon suspend the 'wakeup' pinctrl state is
chosen if it exists. On resume the 'default' pinctrl state is selected.
The 'wakeup' pinctrl state allows wakeup from low-power states if a
specific pin configuration is needed.

On TI K3 AM62 family of devices, the GPIO controller is turned off in
suspend to RAM states, so no interrupt can be received by the
controller. This prevents system wakeup from low-power states.
Alternatively, the pins can wakeup the system if a wakeup flag is set on
the pin by using pinctrl.

A corresponding device tree patch using the 'wakeup' pinctrl state can
be found under "arm64: dts: ti: k3-am62l3-evm: add wakeup-source for GPIO
button".

Tested GPIO wakeup from suspend on AM62L EVM and AM62P EVM.

Signed-off-by: Kendall Willis <redacted>

This is going to be useful also for verdin am62 (verdin_key_wakeup /
k3-am62-verdin.dtsi).

Thanks,
Francesco