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[karo-tx-uboot.git] / board / freescale / mx6qarm2 / mx6qarm2.c
1 /*
2  * Copyright (C) 2010-2011 Freescale Semiconductor, Inc.
3  *
4  * See file CREDITS for list of people who contributed to this
5  * project.
6  *
7  * This program is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU General Public License as
9  * published by the Free Software Foundation; either version 2 of
10  * the License, or (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
20  * MA 02111-1307 USA
21  */
22
23 #include <common.h>
24 #include <asm/io.h>
25 #include <asm/arch/imx-regs.h>
26 #include <asm/arch/mx6x_pins.h>
27 #include <asm/arch/iomux-v3.h>
28 #include <asm/errno.h>
29 #include <asm/gpio.h>
30 #include <mmc.h>
31 #include <fsl_esdhc.h>
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 #define UART_PAD_CTRL  (PAD_CTL_PKE | PAD_CTL_PUE |             \
36         PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED |               \
37         PAD_CTL_DSE_40ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
38
39 #define USDHC_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE |             \
40         PAD_CTL_PUS_47K_UP  | PAD_CTL_SPEED_LOW |               \
41         PAD_CTL_DSE_80ohm   | PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
42
43 int dram_init(void)
44 {
45         gd->ram_size = get_ram_size((void *)PHYS_SDRAM, PHYS_SDRAM_SIZE);
46
47         return 0;
48 }
49
50 iomux_v3_cfg_t uart4_pads[] = {
51         MX6Q_PAD_KEY_COL0__UART4_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
52         MX6Q_PAD_KEY_ROW0__UART4_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),
53 };
54
55 iomux_v3_cfg_t usdhc3_pads[] = {
56         MX6Q_PAD_SD3_CLK__USDHC3_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
57         MX6Q_PAD_SD3_CMD__USDHC3_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
58         MX6Q_PAD_SD3_DAT0__USDHC3_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
59         MX6Q_PAD_SD3_DAT1__USDHC3_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
60         MX6Q_PAD_SD3_DAT2__USDHC3_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
61         MX6Q_PAD_SD3_DAT3__USDHC3_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
62         MX6Q_PAD_SD3_DAT4__USDHC3_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
63         MX6Q_PAD_SD3_DAT5__USDHC3_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
64         MX6Q_PAD_SD3_DAT6__USDHC3_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
65         MX6Q_PAD_SD3_DAT7__USDHC3_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
66         MX6Q_PAD_NANDF_CS0__GPIO_6_11  | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
67 };
68
69 iomux_v3_cfg_t usdhc4_pads[] = {
70         MX6Q_PAD_SD4_CLK__USDHC4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
71         MX6Q_PAD_SD4_CMD__USDHC4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
72         MX6Q_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
73         MX6Q_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
74         MX6Q_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
75         MX6Q_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
76         MX6Q_PAD_SD4_DAT4__USDHC4_DAT4 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
77         MX6Q_PAD_SD4_DAT5__USDHC4_DAT5 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
78         MX6Q_PAD_SD4_DAT6__USDHC4_DAT6 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
79         MX6Q_PAD_SD4_DAT7__USDHC4_DAT7 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
80 };
81
82 static void setup_iomux_uart(void)
83 {
84         imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
85 }
86
87 #ifdef CONFIG_FSL_ESDHC
88 struct fsl_esdhc_cfg usdhc_cfg[2] = {
89         {USDHC3_BASE_ADDR, 1},
90         {USDHC4_BASE_ADDR, 1},
91 };
92
93 int board_mmc_getcd(u8 *cd, struct mmc *mmc)
94 {
95         struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
96
97         if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
98                 gpio_direction_input(171); /*GPIO6_11*/
99                 *cd = gpio_get_value(171);
100         } else /* Don't have the CD GPIO pin on board */
101                 *cd = 0;
102
103         return 0;
104 }
105
106 int board_mmc_init(bd_t *bis)
107 {
108         s32 status = 0;
109         u32 index = 0;
110
111         for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
112                 switch (index) {
113                 case 0:
114                         imx_iomux_v3_setup_multiple_pads(
115                                 usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
116                         break;
117                 case 1:
118                         imx_iomux_v3_setup_multiple_pads(
119                                 usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
120                         break;
121                 default:
122                         printf("Warning: you configured more USDHC controllers"
123                                 "(%d) then supported by the board (%d)\n",
124                                 index + 1, CONFIG_SYS_FSL_USDHC_NUM);
125                         return status;
126                 }
127
128                 status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
129         }
130
131         return status;
132 }
133 #endif
134
135 int board_early_init_f(void)
136 {
137         setup_iomux_uart();
138
139         return 0;
140 }
141
142 int board_init(void)
143 {
144         /* address of boot parameters */
145         gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
146
147         return 0;
148 }
149
150 int checkboard(void)
151 {
152         puts("Board: MX6Q-Armadillo2\n");
153
154         return 0;
155 }