mx23evk.c
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/*
* Freescale MX23EVK board
*
* (C) Copyright 2013 O.S. Systems Software LTDA.
*
* Author: Otavio Salvador <otavio@ossystems.com.br>
*
* Based on m28evk.c:
* Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
* on behalf of DENX Software Engineering GmbH
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/gpio.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
#include <asm/arch/iomux-mx23.h>
#include <asm/arch/sys_proto.h>
DECLARE_GLOBAL_DATA_PTR;
/*
* Functions
*/
int board_early_init_f(void)
{
/* IO0 clock at 480MHz */
mxs_set_ioclk(MXC_IOCLK0, 480000);
/* SSP0 clock at 96MHz */
mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
/* Power on LCD */
gpio_direction_output(MX23_PAD_LCD_RESET__GPIO_1_18, 1);
/* Set contrast to maximum */
gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
return 0;
}
int dram_init(void)
{
return mxs_dram_init();
}
int board_init(void)
{
/* Adress of boot parameters */
gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
return 0;
}
#ifdef CONFIG_CMD_MMC
static int mx23evk_mmc_wp(int id)
{
if (id != 0) {
printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
return 1;
}
return gpio_get_value(MX23_PAD_PWM4__GPIO_1_30);
}
int board_mmc_init(bd_t *bis)
{
/* Configure WP as input */
gpio_direction_input(MX23_PAD_PWM4__GPIO_1_30);
/* Configure MMC0 Power Enable */
gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
return mxsmmc_initialize(bis, 0, mx23evk_mmc_wp, NULL);
}
#endif