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

[Francesco Dolcini <francesco@dolcini.it>]

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 <k-willis@ti.com>

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

Thanks,
Francesco