linux-arkmicro/linux/arch/arm64/boot/dts/qcom/msm8994-pins.dtsi

/*
 * Copyright (c) 2013-2016, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

&msmgpio {
	blsp1_uart2_default: blsp1_uart2_default {
		pinmux {
			function = "blsp_uart2";
			pins = "gpio4", "gpio5";
		};
		pinconf {
			pins = "gpio4", "gpio5";
			drive-strength = <16>;
			bias-disable;
		};
	};

	blsp1_uart2_sleep: blsp1_uart2_sleep {
		pinmux {
			function = "gpio";
			pins = "gpio4", "gpio5";
		};
		pinconf {
			pins = "gpio4", "gpio5";
			drive-strength = <2>;
			bias-pull-down;
		};
	};
};