boards/arm/rpi_pico/rpi_pico-pinctrl.dtsi

/*
 * Copyright (c) 2021, Yonatan Schachter
 * SPDX-License-Identifier: Apache-2.0
 */

#include <dt-bindings/pinctrl/rpi-pico-rp2040-pinctrl.h>

&pinctrl {
	uart0_default: uart0_default {
		group1 {
			pinmux = <UART0_TX_P0>;
		};
		group2 {
			pinmux = <UART0_RX_P1>;
			input-enable;
		};
	};
};