1 /*
2 * Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
3 * Copyright (C) 2009 Marc Kleine-Budde, Pengutronix
4 *
5 * Author: Fabio Estevam <fabio.estevam@freescale.com>
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
18 /*
19 * This machine is known as:
20 * - i.MX35 3-Stack Development System
21 * - i.MX35 Platform Development Kit (i.MX35 PDK)
22 */
23
24 #include <linux/types.h>
25 #include <linux/init.h>
26 #include <linux/platform_device.h>
27 #include <linux/memory.h>
28 #include <linux/gpio.h>
29 #include <linux/usb/otg.h>
30
31 #include <linux/mtd/physmap.h>
32
33 #include <asm/mach-types.h>
34 #include <asm/mach/arch.h>
35 #include <asm/mach/time.h>
36 #include <asm/mach/map.h>
37
38 #include <mach/hardware.h>
39 #include <mach/common.h>
40 #include <mach/iomux-mx35.h>
41 #include <mach/irqs.h>
42 #include <mach/3ds_debugboard.h>
43
44 #include "devices-imx35.h"
45
46 #define EXPIO_PARENT_INT gpio_to_irq(IMX_GPIO_NR(1, 1))
47
48 static const struct imxuart_platform_data uart_pdata __initconst = {
49 .flags = IMXUART_HAVE_RTSCTS,
50 };
51
52 static struct physmap_flash_data mx35pdk_flash_data = {
53 .width = 2,
54 };
55
56 static struct resource mx35pdk_flash_resource = {
57 .start = MX35_CS0_BASE_ADDR,
58 .end = MX35_CS0_BASE_ADDR + SZ_64M - 1,
59 .flags = IORESOURCE_MEM,
60 };
61
62 static struct platform_device mx35pdk_flash = {
63 .name = "physmap-flash",
64 .id = 0,
65 .dev = {
66 .platform_data = &mx35pdk_flash_data,
67 },
68 .resource = &mx35pdk_flash_resource,
69 .num_resources = 1,
70 };
71
72 static const struct mxc_nand_platform_data mx35pdk_nand_board_info __initconst = {
73 .width = 1,
74 .hw_ecc = 1,
75 .flash_bbt = 1,
76 };
77
78 static struct platform_device *devices[] __initdata = {
79 &mx35pdk_flash,
80 };
81
82 static iomux_v3_cfg_t mx35pdk_pads[] = {
83 /* UART1 */
84 MX35_PAD_CTS1__UART1_CTS,
85 MX35_PAD_RTS1__UART1_RTS,
86 MX35_PAD_TXD1__UART1_TXD_MUX,
87 MX35_PAD_RXD1__UART1_RXD_MUX,
88 /* FEC */
89 MX35_PAD_FEC_TX_CLK__FEC_TX_CLK,
90 MX35_PAD_FEC_RX_CLK__FEC_RX_CLK,
91 MX35_PAD_FEC_RX_DV__FEC_RX_DV,
92 MX35_PAD_FEC_COL__FEC_COL,
93 MX35_PAD_FEC_RDATA0__FEC_RDATA_0,
94 MX35_PAD_FEC_TDATA0__FEC_TDATA_0,
95 MX35_PAD_FEC_TX_EN__FEC_TX_EN,
96 MX35_PAD_FEC_MDC__FEC_MDC,
97 MX35_PAD_FEC_MDIO__FEC_MDIO,
98 MX35_PAD_FEC_TX_ERR__FEC_TX_ERR,
99 MX35_PAD_FEC_RX_ERR__FEC_RX_ERR,
100 MX35_PAD_FEC_CRS__FEC_CRS,
101 MX35_PAD_FEC_RDATA1__FEC_RDATA_1,
102 MX35_PAD_FEC_TDATA1__FEC_TDATA_1,
103 MX35_PAD_FEC_RDATA2__FEC_RDATA_2,
104 MX35_PAD_FEC_TDATA2__FEC_TDATA_2,
105 MX35_PAD_FEC_RDATA3__FEC_RDATA_3,
106 MX35_PAD_FEC_TDATA3__FEC_TDATA_3,
107 /* USBOTG */
108 MX35_PAD_USBOTG_PWR__USB_TOP_USBOTG_PWR,
109 MX35_PAD_USBOTG_OC__USB_TOP_USBOTG_OC,
110 /* USBH1 */
111 MX35_PAD_I2C2_CLK__USB_TOP_USBH2_PWR,
112 MX35_PAD_I2C2_DAT__USB_TOP_USBH2_OC,
113 /* SDCARD */
114 MX35_PAD_SD1_CMD__ESDHC1_CMD,
115 MX35_PAD_SD1_CLK__ESDHC1_CLK,
116 MX35_PAD_SD1_DATA0__ESDHC1_DAT0,
117 MX35_PAD_SD1_DATA1__ESDHC1_DAT1,
118 MX35_PAD_SD1_DATA2__ESDHC1_DAT2,
119 MX35_PAD_SD1_DATA3__ESDHC1_DAT3,
120 /* I2C1 */
121 MX35_PAD_I2C1_CLK__I2C1_SCL,
122 MX35_PAD_I2C1_DAT__I2C1_SDA,
123 };
124
mx35_3ds_otg_init(struct platform_device * pdev)125 static int mx35_3ds_otg_init(struct platform_device *pdev)
126 {
127 return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERNAL_PHY);
128 }
129
130 /* OTG config */
131 static const struct fsl_usb2_platform_data usb_otg_pdata __initconst = {
132 .operating_mode = FSL_USB2_DR_DEVICE,
133 .phy_mode = FSL_USB2_PHY_UTMI_WIDE,
134 .workaround = FLS_USB2_WORKAROUND_ENGCM09152,
135 /*
136 * ENGCM09152 also requires a hardware change.
137 * Please check the MX35 Chip Errata document for details.
138 */
139 };
140
141 static struct mxc_usbh_platform_data otg_pdata __initdata = {
142 .init = mx35_3ds_otg_init,
143 .portsc = MXC_EHCI_MODE_UTMI,
144 };
145
mx35_3ds_usbh_init(struct platform_device * pdev)146 static int mx35_3ds_usbh_init(struct platform_device *pdev)
147 {
148 return mx35_initialize_usb_hw(pdev->id, MXC_EHCI_INTERFACE_SINGLE_UNI |
149 MXC_EHCI_INTERNAL_PHY);
150 }
151
152 /* USB HOST config */
153 static const struct mxc_usbh_platform_data usb_host_pdata __initconst = {
154 .init = mx35_3ds_usbh_init,
155 .portsc = MXC_EHCI_MODE_SERIAL,
156 };
157
158 static int otg_mode_host;
159
mx35_3ds_otg_mode(char * options)160 static int __init mx35_3ds_otg_mode(char *options)
161 {
162 if (!strcmp(options, "host"))
163 otg_mode_host = 1;
164 else if (!strcmp(options, "device"))
165 otg_mode_host = 0;
166 else
167 pr_info("otg_mode neither \"host\" nor \"device\". "
168 "Defaulting to device\n");
169 return 0;
170 }
171 __setup("otg_mode=", mx35_3ds_otg_mode);
172
173 static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = {
174 .bitrate = 100000,
175 };
176
177 /*
178 * Board specific initialization.
179 */
mx35_3ds_init(void)180 static void __init mx35_3ds_init(void)
181 {
182 imx35_soc_init();
183
184 mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));
185
186 imx35_add_fec(NULL);
187 imx35_add_imx2_wdt(NULL);
188 platform_add_devices(devices, ARRAY_SIZE(devices));
189
190 imx35_add_imx_uart0(&uart_pdata);
191
192 if (otg_mode_host)
193 imx35_add_mxc_ehci_otg(&otg_pdata);
194
195 imx35_add_mxc_ehci_hs(&usb_host_pdata);
196
197 if (!otg_mode_host)
198 imx35_add_fsl_usb2_udc(&usb_otg_pdata);
199
200 imx35_add_mxc_nand(&mx35pdk_nand_board_info);
201 imx35_add_sdhci_esdhc_imx(0, NULL);
202
203 if (mxc_expio_init(MX35_CS5_BASE_ADDR, EXPIO_PARENT_INT))
204 pr_warn("Init of the debugboard failed, all "
205 "devices on the debugboard are unusable.\n");
206 imx35_add_imx_i2c0(&mx35_3ds_i2c0_data);
207 }
208
mx35pdk_timer_init(void)209 static void __init mx35pdk_timer_init(void)
210 {
211 mx35_clocks_init();
212 }
213
214 struct sys_timer mx35pdk_timer = {
215 .init = mx35pdk_timer_init,
216 };
217
218 MACHINE_START(MX35_3DS, "Freescale MX35PDK")
219 /* Maintainer: Freescale Semiconductor, Inc */
220 .atag_offset = 0x100,
221 .map_io = mx35_map_io,
222 .init_early = imx35_init_early,
223 .init_irq = mx35_init_irq,
224 .handle_irq = imx35_handle_irq,
225 .timer = &mx35pdk_timer,
226 .init_machine = mx35_3ds_init,
227 .restart = mxc_restart,
228 MACHINE_END
229