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  * SPDX-License-Identifier:	GPL-2.0+
13  */
14 
15 #include <common.h>
16 #include <asm/gpio.h>
17 #include <asm/arch/imx-regs.h>
18 #include <asm/arch/clock.h>
19 #include <asm/arch/iomux-mx23.h>
20 #include <asm/arch/sys_proto.h>
21 
22 DECLARE_GLOBAL_DATA_PTR;
23 
24 /*
25  * Functions
26  */
27 int board_early_init_f(void)
28 {
29 	/* IO0 clock at 480MHz */
30 	mxs_set_ioclk(MXC_IOCLK0, 480000);
31 
32 	/* SSP0 clock at 96MHz */
33 	mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
34 
35 	/* Power on LCD */
36 	gpio_direction_output(MX23_PAD_LCD_RESET__GPIO_1_18, 1);
37 
38 	/* Set contrast to maximum */
39 	gpio_direction_output(MX23_PAD_PWM2__GPIO_1_28, 1);
40 
41 	return 0;
42 }
43 
44 int dram_init(void)
45 {
46 	return mxs_dram_init();
47 }
48 
49 int board_init(void)
50 {
51 	/* Adress of boot parameters */
52 	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
53 
54 	return 0;
55 }
56 
57 #ifdef	CONFIG_CMD_MMC
58 static int mx23evk_mmc_wp(int id)
59 {
60 	if (id != 0) {
61 		printf("MXS MMC: Invalid card selected (card id = %d)\n", id);
62 		return 1;
63 	}
64 
65 	return gpio_get_value(MX23_PAD_PWM4__GPIO_1_30);
66 }
67 
68 int board_mmc_init(bd_t *bis)
69 {
70 	/* Configure WP as input */
71 	gpio_direction_input(MX23_PAD_PWM4__GPIO_1_30);
72 
73 	/* Configure MMC0 Power Enable */
74 	gpio_direction_output(MX23_PAD_PWM3__GPIO_1_29, 0);
75 
76 	return mxsmmc_initialize(bis, 0, mx23evk_mmc_wp, NULL);
77 }
78 #endif
79