boards/arm/degu_evk/board.c

/*
 * Copyright (c) 2019 Atmark Techno, Inc.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <init.h>
#include <gpio.h>

static int board_degu_evk_init(struct device *dev)
{
	ARG_UNUSED(dev);

	struct device *gpio0 = device_get_binding(DT_GPIO_P0_DEV_NAME);
	struct device *gpio1 = device_get_binding(DT_GPIO_P1_DEV_NAME);

	/*
	 * Degu Evaluation Kit has a TPS22916C power switch.
	 * It is connected to GPIO0_26 so we must enable it.
	 */
	gpio_pin_configure(gpio0, 26, GPIO_DIR_OUT);
	gpio_pin_write(gpio0, 26, 1);

	/*
	 * We must enable GPIO1_2 to use Secure Element.
	 */
	gpio_pin_configure(gpio1, 2, GPIO_DIR_OUT);
	gpio_pin_write(gpio1, 2, 1);

	/*
	 * We must enable GPIO1_6 to read Vin voltage.
	 */
	gpio_pin_configure(gpio1, 6, GPIO_DIR_OUT);
	gpio_pin_write(gpio1, 6, 1);

	return 0;
}

SYS_INIT(board_degu_evk_init, PRE_KERNEL_1,
	 CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);