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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 uart2_pads[] = {
51        MX6Q_PAD_EIM_D26__UART2_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),
52        MX6Q_PAD_EIM_D27__UART2_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_DAT5__GPIO_7_0    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
63 };
64
65 iomux_v3_cfg_t usdhc4_pads[] = {
66        MX6Q_PAD_SD4_CLK__USDHC4_CLK   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
67        MX6Q_PAD_SD4_CMD__USDHC4_CMD   | MUX_PAD_CTRL(USDHC_PAD_CTRL),
68        MX6Q_PAD_SD4_DAT0__USDHC4_DAT0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
69        MX6Q_PAD_SD4_DAT1__USDHC4_DAT1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
70        MX6Q_PAD_SD4_DAT2__USDHC4_DAT2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
71        MX6Q_PAD_SD4_DAT3__USDHC4_DAT3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
72        MX6Q_PAD_NANDF_D6__GPIO_2_6    | MUX_PAD_CTRL(NO_PAD_CTRL), /* CD */
73 };
74
75 static void setup_iomux_uart(void)
76 {
77        imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));
78 }
79
80 #ifdef CONFIG_FSL_ESDHC
81 struct fsl_esdhc_cfg usdhc_cfg[2] = {
82        {USDHC3_BASE_ADDR, 1},
83        {USDHC4_BASE_ADDR, 1},
84 };
85
86 int board_mmc_getcd(struct mmc *mmc)
87 {
88        struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
89        int ret;
90
91        if (cfg->esdhc_base == USDHC3_BASE_ADDR) {
92                gpio_direction_input(192); /*GPIO7_0*/
93                ret = !gpio_get_value(192);
94        } else {
95                gpio_direction_input(38); /*GPIO2_6*/
96                ret = !gpio_get_value(38);
97        }
98
99        return ret;
100 }
101
102 int board_mmc_init(bd_t *bis)
103 {
104        s32 status = 0;
105        u32 index = 0;
106
107        for (index = 0; index < CONFIG_SYS_FSL_USDHC_NUM; ++index) {
108                switch (index) {
109                case 0:
110                        imx_iomux_v3_setup_multiple_pads(
111                                usdhc3_pads, ARRAY_SIZE(usdhc3_pads));
112                        break;
113                case 1:
114                        imx_iomux_v3_setup_multiple_pads(
115                                usdhc4_pads, ARRAY_SIZE(usdhc4_pads));
116                        break;
117                default:
118                        printf("Warning: you configured more USDHC controllers"
119                                "(%d) then supported by the board (%d)\n",
120                                index + 1, CONFIG_SYS_FSL_USDHC_NUM);
121                        return status;
122                }
123
124                status |= fsl_esdhc_initialize(bis, &usdhc_cfg[index]);
125        }
126
127        return status;
128 }
129 #endif
130
131 int board_early_init_f(void)
132 {
133        setup_iomux_uart();
134
135        return 0;
136 }
137
138 int board_init(void)
139 {
140        /* address of boot parameters */
141        gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
142
143        return 0;
144 }
145
146 int checkboard(void)
147 {
148        puts("Board: MX6Q-Sabre Lite\n");
149
150        return 0;
151 }