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&uart1 {
        pinctrl-names = "default", "sleep";
        pinctrl-0 = <&uart1_pins_a>;
        pinctrl-1 = <&uart1_pins_b>;
        status = "okay";
};

        uart1_pins_a: uart1_pins@0 {  /* For EVB1 board */
                pins = "PG6", "PG7", "PG8", "PG9";
                function = "uart1";
                drive-strength = <10>;
                bias-pull-up;
        };

        uart1_pins_b: uart1_pins {  /* For EVB1 board */
                pins = "PG6", "PG7", "PG8", "PG9";
                function = "gpio_in";
        };