1 /*
2 * Copyright (C) 2010-2011 Freescale Semiconductor, Inc. All Rights Reserved.
3 * Copyright (C) 2010 Yong Shen. <Yong.Shen@linaro.org>
4 */
5
6 /*
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (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 along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
20 */
21
22 #include <linux/init.h>
23 #include <linux/clk.h>
24 #include <linux/delay.h>
25 #include <linux/gpio.h>
26 #include <linux/spi/flash.h>
27 #include <linux/spi/spi.h>
28 #include <mach/common.h>
29 #include <mach/hardware.h>
30 #include <asm/mach-types.h>
31 #include <asm/mach/arch.h>
32 #include <asm/mach/time.h>
33 #include <mach/iomux-mx53.h>
34
35 #define MX53_EVK_FEC_PHY_RST IMX_GPIO_NR(7, 6)
36 #define EVK_ECSPI1_CS0 IMX_GPIO_NR(2, 30)
37 #define EVK_ECSPI1_CS1 IMX_GPIO_NR(3, 19)
38 #define MX53EVK_LED IMX_GPIO_NR(7, 7)
39
40 #include "devices-imx53.h"
41
42 static iomux_v3_cfg_t mx53_evk_pads[] = {
43 MX53_PAD_CSI0_DAT10__UART1_TXD_MUX,
44 MX53_PAD_CSI0_DAT11__UART1_RXD_MUX,
45
46 MX53_PAD_PATA_BUFFER_EN__UART2_RXD_MUX,
47 MX53_PAD_PATA_DMARQ__UART2_TXD_MUX,
48 MX53_PAD_PATA_DIOR__UART2_RTS,
49 MX53_PAD_PATA_INTRQ__UART2_CTS,
50
51 MX53_PAD_PATA_CS_0__UART3_TXD_MUX,
52 MX53_PAD_PATA_CS_1__UART3_RXD_MUX,
53
54 MX53_PAD_EIM_D16__ECSPI1_SCLK,
55 MX53_PAD_EIM_D17__ECSPI1_MISO,
56 MX53_PAD_EIM_D18__ECSPI1_MOSI,
57
58 /* ecspi chip select lines */
59 MX53_PAD_EIM_EB2__GPIO2_30,
60 MX53_PAD_EIM_D19__GPIO3_19,
61 /* LED */
62 MX53_PAD_PATA_DA_1__GPIO7_7,
63 };
64
65 static const struct imxuart_platform_data mx53_evk_uart_pdata __initconst = {
66 .flags = IMXUART_HAVE_RTSCTS,
67 };
68
69 static const struct gpio_led mx53evk_leds[] __initconst = {
70 {
71 .name = "green",
72 .default_trigger = "heartbeat",
73 .gpio = MX53EVK_LED,
74 },
75 };
76
77 static const struct gpio_led_platform_data mx53evk_leds_data __initconst = {
78 .leds = mx53evk_leds,
79 .num_leds = ARRAY_SIZE(mx53evk_leds),
80 };
81
mx53_evk_init_uart(void)82 static inline void mx53_evk_init_uart(void)
83 {
84 imx53_add_imx_uart(0, NULL);
85 imx53_add_imx_uart(1, &mx53_evk_uart_pdata);
86 imx53_add_imx_uart(2, NULL);
87 }
88
89 static const struct imxi2c_platform_data mx53_evk_i2c_data __initconst = {
90 .bitrate = 100000,
91 };
92
mx53_evk_fec_reset(void)93 static inline void mx53_evk_fec_reset(void)
94 {
95 int ret;
96
97 /* reset FEC PHY */
98 ret = gpio_request_one(MX53_EVK_FEC_PHY_RST, GPIOF_OUT_INIT_LOW,
99 "fec-phy-reset");
100 if (ret) {
101 printk(KERN_ERR"failed to get GPIO_FEC_PHY_RESET: %d\n", ret);
102 return;
103 }
104 msleep(1);
105 gpio_set_value(MX53_EVK_FEC_PHY_RST, 1);
106 }
107
108 static const struct fec_platform_data mx53_evk_fec_pdata __initconst = {
109 .phy = PHY_INTERFACE_MODE_RMII,
110 };
111
112 static struct spi_board_info mx53_evk_spi_board_info[] __initdata = {
113 {
114 .modalias = "mtd_dataflash",
115 .max_speed_hz = 25000000,
116 .bus_num = 0,
117 .chip_select = 1,
118 .mode = SPI_MODE_0,
119 .platform_data = NULL,
120 },
121 };
122
123 static int mx53_evk_spi_cs[] = {
124 EVK_ECSPI1_CS0,
125 EVK_ECSPI1_CS1,
126 };
127
128 static const struct spi_imx_master mx53_evk_spi_data __initconst = {
129 .chipselect = mx53_evk_spi_cs,
130 .num_chipselect = ARRAY_SIZE(mx53_evk_spi_cs),
131 };
132
imx53_evk_common_init(void)133 void __init imx53_evk_common_init(void)
134 {
135 mxc_iomux_v3_setup_multiple_pads(mx53_evk_pads,
136 ARRAY_SIZE(mx53_evk_pads));
137 }
138
mx53_evk_board_init(void)139 static void __init mx53_evk_board_init(void)
140 {
141 imx53_soc_init();
142 imx53_evk_common_init();
143
144 mx53_evk_init_uart();
145 mx53_evk_fec_reset();
146 imx53_add_fec(&mx53_evk_fec_pdata);
147
148 imx53_add_imx_i2c(0, &mx53_evk_i2c_data);
149 imx53_add_imx_i2c(1, &mx53_evk_i2c_data);
150
151 imx53_add_sdhci_esdhc_imx(0, NULL);
152 imx53_add_sdhci_esdhc_imx(1, NULL);
153
154 spi_register_board_info(mx53_evk_spi_board_info,
155 ARRAY_SIZE(mx53_evk_spi_board_info));
156 imx53_add_ecspi(0, &mx53_evk_spi_data);
157 imx53_add_imx2_wdt(0, NULL);
158 gpio_led_register_device(-1, &mx53evk_leds_data);
159 }
160
mx53_evk_timer_init(void)161 static void __init mx53_evk_timer_init(void)
162 {
163 mx53_clocks_init(32768, 24000000, 22579200, 0);
164 }
165
166 static struct sys_timer mx53_evk_timer = {
167 .init = mx53_evk_timer_init,
168 };
169
170 MACHINE_START(MX53_EVK, "Freescale MX53 EVK Board")
171 .map_io = mx53_map_io,
172 .init_early = imx53_init_early,
173 .init_irq = mx53_init_irq,
174 .handle_irq = imx53_handle_irq,
175 .timer = &mx53_evk_timer,
176 .init_machine = mx53_evk_board_init,
177 .restart = mxc_restart,
178 MACHINE_END
179