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Linux/arch/arm/mach-imx/mach-mx31lite.c

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  1 /*
  2  *  Copyright (C) 2000 Deep Blue Solutions Ltd
  3  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
  4  *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
  5  *  Copyright (C) 2009 Daniel Mack <daniel@caiaq.de>
  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 #include <linux/types.h>
 19 #include <linux/init.h>
 20 #include <linux/kernel.h>
 21 #include <linux/memory.h>
 22 #include <linux/platform_device.h>
 23 #include <linux/gpio.h>
 24 #include <linux/moduleparam.h>
 25 #include <linux/smsc911x.h>
 26 #include <linux/mfd/mc13783.h>
 27 #include <linux/spi/spi.h>
 28 #include <linux/usb/otg.h>
 29 #include <linux/usb/ulpi.h>
 30 #include <linux/mtd/physmap.h>
 31 #include <linux/delay.h>
 32 #include <linux/regulator/machine.h>
 33 #include <linux/regulator/fixed.h>
 34 
 35 #include <asm/mach-types.h>
 36 #include <asm/mach/arch.h>
 37 #include <asm/mach/time.h>
 38 #include <asm/mach/map.h>
 39 #include <asm/page.h>
 40 #include <asm/setup.h>
 41 
 42 #include "board-mx31lite.h"
 43 #include "common.h"
 44 #include "devices-imx31.h"
 45 #include "ehci.h"
 46 #include "hardware.h"
 47 #include "iomux-mx3.h"
 48 #include "ulpi.h"
 49 
 50 /*
 51  * This file contains the module-specific initialization routines.
 52  */
 53 
 54 static unsigned int mx31lite_pins[] = {
 55         /* LAN9117 IRQ pin */
 56         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
 57         /* SPI 1 */
 58         MX31_PIN_CSPI2_SCLK__SCLK,
 59         MX31_PIN_CSPI2_MOSI__MOSI,
 60         MX31_PIN_CSPI2_MISO__MISO,
 61         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
 62         MX31_PIN_CSPI2_SS0__SS0,
 63         MX31_PIN_CSPI2_SS1__SS1,
 64         MX31_PIN_CSPI2_SS2__SS2,
 65 };
 66 
 67 static const struct mxc_nand_platform_data
 68 mx31lite_nand_board_info __initconst  = {
 69         .width = 1,
 70         .hw_ecc = 1,
 71 };
 72 
 73 static struct smsc911x_platform_config smsc911x_config = {
 74         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 75         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 76         .flags          = SMSC911X_USE_16BIT,
 77 };
 78 
 79 static struct resource smsc911x_resources[] = {
 80         {
 81                 .start          = MX31_CS4_BASE_ADDR,
 82                 .end            = MX31_CS4_BASE_ADDR + 0x100,
 83                 .flags          = IORESOURCE_MEM,
 84         }, {
 85                 /* irq number is run-time assigned */
 86                 .flags          = IORESOURCE_IRQ,
 87         },
 88 };
 89 
 90 static struct platform_device smsc911x_device = {
 91         .name           = "smsc911x",
 92         .id             = -1,
 93         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 94         .resource       = smsc911x_resources,
 95         .dev            = {
 96                 .platform_data = &smsc911x_config,
 97         },
 98 };
 99 
100 /*
101  * SPI
102  *
103  * The MC13783 is the only hard-wired SPI device on the module.
104  */
105 
106 static int spi_internal_chipselect[] = {
107         MXC_SPI_CS(0),
108 };
109 
110 static const struct spi_imx_master spi1_pdata __initconst = {
111         .chipselect     = spi_internal_chipselect,
112         .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
113 };
114 
115 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
116         .flags = MC13XXX_USE_RTC,
117 };
118 
119 static struct spi_board_info mc13783_spi_dev __initdata = {
120         .modalias       = "mc13783",
121         .max_speed_hz   = 1000000,
122         .bus_num        = 1,
123         .chip_select    = 0,
124         .platform_data  = &mc13783_pdata,
125         /* irq number is run-time assigned */
126 };
127 
128 /*
129  * USB
130  */
131 
132 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
133                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
134 
135 static int usbh2_init(struct platform_device *pdev)
136 {
137         int pins[] = {
138                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
139                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
140                 MX31_PIN_USBH2_CLK__USBH2_CLK,
141                 MX31_PIN_USBH2_DIR__USBH2_DIR,
142                 MX31_PIN_USBH2_NXT__USBH2_NXT,
143                 MX31_PIN_USBH2_STP__USBH2_STP,
144         };
145 
146         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
147 
148         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
149         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
150         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
151         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
152         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
153         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
154         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
155         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
156         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
157         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
158         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
159         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
160 
161         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
162 
163         /* chip select */
164         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
165                                 "USBH2_CS");
166         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
167         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
168 
169         mdelay(10);
170 
171         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
172 }
173 
174 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
175         .init   = usbh2_init,
176         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
177 };
178 
179 /*
180  * NOR flash
181  */
182 
183 static struct physmap_flash_data nor_flash_data = {
184         .width  = 2,
185 };
186 
187 static struct resource nor_flash_resource = {
188         .start  = 0xa0000000,
189         .end    = 0xa1ffffff,
190         .flags  = IORESOURCE_MEM,
191 };
192 
193 static struct platform_device physmap_flash_device = {
194         .name   = "physmap-flash",
195         .id     = 0,
196         .dev    = {
197                 .platform_data  = &nor_flash_data,
198         },
199         .resource = &nor_flash_resource,
200         .num_resources = 1,
201 };
202 
203 
204 
205 /*
206  * This structure defines the MX31 memory map.
207  */
208 static struct map_desc mx31lite_io_desc[] __initdata = {
209         {
210                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
211                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
212                 .length = MX31_CS4_SIZE,
213                 .type = MT_DEVICE
214         }
215 };
216 
217 /*
218  * Set up static virtual mappings.
219  */
220 void __init mx31lite_map_io(void)
221 {
222         mx31_map_io();
223         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
224 }
225 
226 static int mx31lite_baseboard;
227 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
228 
229 static struct regulator_consumer_supply dummy_supplies[] = {
230         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
231         REGULATOR_SUPPLY("vddvario", "smsc911x"),
232 };
233 
234 static void __init mx31lite_init(void)
235 {
236         int ret;
237 
238         imx31_soc_init();
239 
240         switch (mx31lite_baseboard) {
241         case MX31LITE_NOBOARD:
242                 break;
243         case MX31LITE_DB:
244                 mx31lite_db_init();
245                 break;
246         default:
247                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
248                                 mx31lite_baseboard);
249         }
250 
251         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
252                                       "mx31lite");
253 
254         /* NOR and NAND flash */
255         platform_device_register(&physmap_flash_device);
256         imx31_add_mxc_nand(&mx31lite_nand_board_info);
257 
258         imx31_add_spi_imx1(&spi1_pdata);
259         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
260         spi_register_board_info(&mc13783_spi_dev, 1);
261 
262         /* USB */
263         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
264                         ULPI_OTG_DRVVBUS_EXT);
265         if (usbh2_pdata.otg)
266                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
267 
268         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
269 
270         /* SMSC9117 IRQ pin */
271         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
272         if (ret)
273                 pr_warn("could not get LAN irq gpio\n");
274         else {
275                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
276                 smsc911x_resources[1].start =
277                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
278                 smsc911x_resources[1].end =
279                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
280                 platform_device_register(&smsc911x_device);
281         }
282 }
283 
284 static void __init mx31lite_timer_init(void)
285 {
286         mx31_clocks_init(26000000);
287 }
288 
289 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
290         /* Maintainer: Freescale Semiconductor, Inc. */
291         .atag_offset = 0x100,
292         .map_io = mx31lite_map_io,
293         .init_early = imx31_init_early,
294         .init_irq = mx31_init_irq,
295         .init_time      = mx31lite_timer_init,
296         .init_machine = mx31lite_init,
297         .restart        = mxc_restart,
298 MACHINE_END
299 

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