Hi!

> - LEDs
> - gyro
> - magnetometer

> +     leds {
> +             compatible = "gpio-leds";
> +             pinctrl-names = "default";
> +             pinctrl-0 = <&pinctrl_gpio_leds>;
> +
> +             led1 {
> +                     label = "LED 1";

So, what kind of LED do you have, and what color is it? label should probably 
be something like
notify:green.

> +     charger@6b { /* bq25896 */
> +             compatible = "ti,bq25890";
> +             reg = <0x6b>;
> +             pinctrl-names = "default";
> +             pinctrl-0 = <&pinctrl_charger>;
> +             interrupt-parent = <&gpio3>;
> +             interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
> +             ti,battery-regulation-voltage = <4192000>; /* 4.192V */
> +             ti,charge-current = <1600000>; /* 1.6 A */

No space before A, for consistency.

> +             ti,termination-current = <66000>;  /* 66mA */
> +             ti,precharge-current = <1300000>; /* 1.3A */

I thought precharge is usually something low, because you are not yet sure of 
battery health...?

> +             ti,minimum-sys-voltage = <2750000>; /* 2.75V */

Are you sure? Normally systems shut down at 3.2V, 3V or so. Li-ion batteries 
don't
really like to be discharged _this_ deep.

                                                                                
Pavel

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