1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Freescale MX23EVK board
4 *
5 * (C) Copyright 2013 O.S. Systems Software LTDA.
6 *
7 * Author: Otavio Salvador <otavio@ossystems.com.br>
8 *
9 * Based on m28evk.c:
10 * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
11 * on behalf of DENX Software Engineering GmbH
12 */
13
14 #include <common.h>
15 #include <asm/gpio.h>
16 #include <asm/arch/imx-regs.h>
17 #include <asm/arch/clock.h>
18 #include <asm/arch/iomux-mx23.h>
19 #include <asm/arch/sys_proto.h>
20
21 DECLARE_GLOBAL_DATA_PTR;
22
23 /*
24 * Functions
25 */
board_early_init_f(void)26 int board_early_init_f(void)
27 {
28 /* IO0 clock at 480MHz */
29 mxs_set_ioclk(MXC_IOCLK0, 480000);
30
31 /* SSP0 clock at 96MHz */
32 mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
33
34 /* Power on LCD */
35 gpio_direction_output(MX23_PAD_LCD_RESET__GPIO_1_18, 1);
36
37 /* Set contrast to maximum */
38 gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
39
40 return 0;
41 }
42
dram_init(void)43 int dram_init(void)
44 {
45 return mxs_dram_init();
46 }
47
board_init(void)48 int board_init(void)
49 {
50 /* Adress of boot parameters */
51 gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
52
53 return 0;
54 }
55
56 #ifdef CONFIG_CMD_MMC
mx23evk_mmc_wp(int id)57 static int mx23evk_mmc_wp(int id)
58 {
59 if (id != 0) {
60 printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
61 return 1;
62 }
63
64 return gpio_get_value(MX23_PAD_PWM4__GPIO_1_30);
65 }
66
board_mmc_init(bd_t * bis)67 int board_mmc_init(bd_t *bis)
68 {
69 /* Configure WP as input */
70 gpio_direction_input(MX23_PAD_PWM4__GPIO_1_30);
71
72 /* Configure MMC0 Power Enable */
73 gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
74
75 return mxsmmc_initialize(bis, 0, mx23evk_mmc_wp, NULL);
76 }
77 #endif
78