1 /*
2  * Freescale MX23EVK board
3  *
4  * (C) Copyright 2013 O.S. Systems Software LTDA.
5  *
6  * Author: Otavio Salvador <otavio@ossystems.com.br>
7  *
8  * Based on m28evk.c:
9  * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
10  * on behalf of DENX Software Engineering GmbH
11  *
12  * See file CREDITS for list of people who contributed to this
13  * project.
14  *
15  * This program is free software; you can redistribute it and/or
16  * modify it under the terms of the GNU General Public License as
17  * published by the Free Software Foundation; either version 2 of
18  * the License, or (at your option) any later version.
19  *
20  * This program is distributed in the hope that it will be useful,
21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23  * GNU General Public License for more details.
24  */
25 
26 #include <common.h>
27 #include <asm/gpio.h>
28 #include <asm/arch/imx-regs.h>
29 #include <asm/arch/clock.h>
30 #include <asm/arch/iomux-mx23.h>
31 #include <asm/arch/sys_proto.h>
32 
33 DECLARE_GLOBAL_DATA_PTR;
34 
35 /*
36  * Functions
37  */
38 int board_early_init_f(void)
39 {
40 	/* IO0 clock at 480MHz */
41 	mxs_set_ioclk(MXC_IOCLK0, 480000);
42 
43 	/* SSP0 clock at 96MHz */
44 	mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
45 
46 	/* Power on LCD */
47 	gpio_direction_output(MX23_PAD_LCD_RESET__GPIO_1_18, 1);
48 
49 	/* Set contrast to maximum */
50 	gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
51 
52 	return 0;
53 }
54 
55 int dram_init(void)
56 {
57 	return mxs_dram_init();
58 }
59 
60 int board_init(void)
61 {
62 	/* Adress of boot parameters */
63 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
64 
65 	return 0;
66 }
67 
68 #ifdef	CONFIG_CMD_MMC
69 static int mx23evk_mmc_wp(int id)
70 {
71 	if (id != 0) {
72 		printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
73 		return 1;
74 	}
75 
76 	return gpio_get_value(MX23_PAD_PWM4__GPIO_1_30);
77 }
78 
79 int board_mmc_init(bd_t *bis)
80 {
81 	/* Configure WP as input */
82 	gpio_direction_input(MX23_PAD_PWM4__GPIO_1_30);
83 
84 	/* Configure MMC0 Power Enable */
85 	gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
86 
87 	return mxsmmc_initialize(bis, 0, mx23evk_mmc_wp, NULL);
88 }
89 #endif
90