nRF54LM20A GPIO and GPIO-KEYS

[edmcnicholas]

Hello,

I am having an issue with nRF54LM20 rev B silicon where the gpio interrupts are not consistent for key functions with either code similar to the button demo or gpio-keys. I have tried with both CONFIG_PM_DEVICE_RUNTIME set to Y and N and I still need to use polling mode. Currently my keys are on gpio1 and I updated the edge sense mask. Is there something I am missing. I am on sdk 3.4.1. I now know that gpio2 can not be used since there is not GPIOTE and that will be changed on the next rev.

buttons: buttons {

        compatible = "gpio-keys";

        status = "okay";

        debounce-interval-ms = <20>;

        no-disconnect; /* FORCES PINS TO STAY CONNECTED */

        polling-mode;

        button0: button_0 {

            gpios = <&gpio1 22 (  GPIO_ACTIVE_HIGH | GPIO_INT_WAKEUP)>;

            label = "Push button 0";

            zephyr,code = <INPUT_KEY_3>;

        };

        button1: button_1 {

            gpios = <&gpio1 29 (GPIO_PULL_UP | GPIO_ACTIVE_LOW | GPIO_INT_WAKEUP)>;

            label = "Push button 1";

            zephyr,code = <INPUT_KEY_4>;

        };

        button2: button_2 {

            gpios = <&gpio1 5 (GPIO_PULL_UP | GPIO_ACTIVE_LOW | GPIO_INT_WAKEUP)>;

            label = "Push button 2";

            zephyr,code = <INPUT_KEY_1>;

        };

        button3: button_3 {

            gpios = <&gpio2 6 (GPIO_PULL_UP | GPIO_ACTIVE_LOW)>;

            label = "Push button 3";

            zephyr,code = <INPUT_KEY_2>;

        };

    };

&gpio1 {

    status = "okay";

    sense-edge-mask = <0x20400020>; /* Pin 5, 22, and 29 bitmask */

};

Thanks

Ed

[Håkon Alseth]

Hi,

 

It sounds like you might be running into the same issue as described here?

 RE: button with "gpio-keys" not fired when CONFIG_PM_DEVICE_RUNTIME=y 

 

Could you try to add the reference and see if this helps?

 

Kind regards,

Håkon

[edmcnicholas]

I had already tried that with and without the config with CONFIG_PM_DEVICE_RUNTIME=n and CONFIG_PM_DEVICE_RUNTIME=y. The button presses are only consistent when running in polled mode. Is there an nrf54lm20 errata?

I have this in my UI init.

pm_device_runtime_get(DEVICE_DT_GET(DT_PATH(buttons)));