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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 "hardware.h"
 46 #include "iomux-mx3.h"
 47 #include "ulpi.h"
 48 
 49 /*
 50  * This file contains the module-specific initialization routines.
 51  */
 52 
 53 static unsigned int mx31lite_pins[] = {
 54         /* LAN9117 IRQ pin */
 55         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
 56         /* SPI 1 */
 57         MX31_PIN_CSPI2_SCLK__SCLK,
 58         MX31_PIN_CSPI2_MOSI__MOSI,
 59         MX31_PIN_CSPI2_MISO__MISO,
 60         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
 61         MX31_PIN_CSPI2_SS0__SS0,
 62         MX31_PIN_CSPI2_SS1__SS1,
 63         MX31_PIN_CSPI2_SS2__SS2,
 64 };
 65 
 66 static const struct mxc_nand_platform_data
 67 mx31lite_nand_board_info __initconst  = {
 68         .width = 1,
 69         .hw_ecc = 1,
 70 };
 71 
 72 static struct smsc911x_platform_config smsc911x_config = {
 73         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 74         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 75         .flags          = SMSC911X_USE_16BIT,
 76 };
 77 
 78 static struct resource smsc911x_resources[] = {
 79         {
 80                 .start          = MX31_CS4_BASE_ADDR,
 81                 .end            = MX31_CS4_BASE_ADDR + 0x100,
 82                 .flags          = IORESOURCE_MEM,
 83         }, {
 84                 /* irq number is run-time assigned */
 85                 .flags          = IORESOURCE_IRQ,
 86         },
 87 };
 88 
 89 static struct platform_device smsc911x_device = {
 90         .name           = "smsc911x",
 91         .id             = -1,
 92         .num_resources  = ARRAY_SIZE(smsc911x_resources),
 93         .resource       = smsc911x_resources,
 94         .dev            = {
 95                 .platform_data = &smsc911x_config,
 96         },
 97 };
 98 
 99 /*
100  * SPI
101  *
102  * The MC13783 is the only hard-wired SPI device on the module.
103  */
104 
105 static int spi_internal_chipselect[] = {
106         MXC_SPI_CS(0),
107 };
108 
109 static const struct spi_imx_master spi1_pdata __initconst = {
110         .chipselect     = spi_internal_chipselect,
111         .num_chipselect = ARRAY_SIZE(spi_internal_chipselect),
112 };
113 
114 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
115         .flags = MC13XXX_USE_RTC,
116 };
117 
118 static struct spi_board_info mc13783_spi_dev __initdata = {
119         .modalias       = "mc13783",
120         .max_speed_hz   = 1000000,
121         .bus_num        = 1,
122         .chip_select    = 0,
123         .platform_data  = &mc13783_pdata,
124         /* irq number is run-time assigned */
125 };
126 
127 /*
128  * USB
129  */
130 
131 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
132                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
133 
134 static int usbh2_init(struct platform_device *pdev)
135 {
136         int pins[] = {
137                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
138                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
139                 MX31_PIN_USBH2_CLK__USBH2_CLK,
140                 MX31_PIN_USBH2_DIR__USBH2_DIR,
141                 MX31_PIN_USBH2_NXT__USBH2_NXT,
142                 MX31_PIN_USBH2_STP__USBH2_STP,
143         };
144 
145         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
146 
147         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
148         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
149         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
150         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
151         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
152         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
153         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
154         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
155         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
156         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
157         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
158         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
159 
160         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
161 
162         /* chip select */
163         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
164                                 "USBH2_CS");
165         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
166         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
167 
168         mdelay(10);
169 
170         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
171 }
172 
173 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
174         .init   = usbh2_init,
175         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
176 };
177 
178 /*
179  * NOR flash
180  */
181 
182 static struct physmap_flash_data nor_flash_data = {
183         .width  = 2,
184 };
185 
186 static struct resource nor_flash_resource = {
187         .start  = 0xa0000000,
188         .end    = 0xa1ffffff,
189         .flags  = IORESOURCE_MEM,
190 };
191 
192 static struct platform_device physmap_flash_device = {
193         .name   = "physmap-flash",
194         .id     = 0,
195         .dev    = {
196                 .platform_data  = &nor_flash_data,
197         },
198         .resource = &nor_flash_resource,
199         .num_resources = 1,
200 };
201 
202 
203 
204 /*
205  * This structure defines the MX31 memory map.
206  */
207 static struct map_desc mx31lite_io_desc[] __initdata = {
208         {
209                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
210                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
211                 .length = MX31_CS4_SIZE,
212                 .type = MT_DEVICE
213         }
214 };
215 
216 /*
217  * Set up static virtual mappings.
218  */
219 void __init mx31lite_map_io(void)
220 {
221         mx31_map_io();
222         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
223 }
224 
225 static int mx31lite_baseboard;
226 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
227 
228 static struct regulator_consumer_supply dummy_supplies[] = {
229         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
230         REGULATOR_SUPPLY("vddvario", "smsc911x"),
231 };
232 
233 static void __init mx31lite_init(void)
234 {
235         int ret;
236 
237         imx31_soc_init();
238 
239         switch (mx31lite_baseboard) {
240         case MX31LITE_NOBOARD:
241                 break;
242         case MX31LITE_DB:
243                 mx31lite_db_init();
244                 break;
245         default:
246                 printk(KERN_ERR "Illegal mx31lite_baseboard type %d\n",
247                                 mx31lite_baseboard);
248         }
249 
250         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
251                                       "mx31lite");
252 
253         /* NOR and NAND flash */
254         platform_device_register(&physmap_flash_device);
255         imx31_add_mxc_nand(&mx31lite_nand_board_info);
256 
257         imx31_add_spi_imx1(&spi1_pdata);
258         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
259         spi_register_board_info(&mc13783_spi_dev, 1);
260 
261         /* USB */
262         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
263                         ULPI_OTG_DRVVBUS_EXT);
264         if (usbh2_pdata.otg)
265                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
266 
267         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
268 
269         /* SMSC9117 IRQ pin */
270         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
271         if (ret)
272                 pr_warning("could not get LAN irq gpio\n");
273         else {
274                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
275                 smsc911x_resources[1].start =
276                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
277                 smsc911x_resources[1].end =
278                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
279                 platform_device_register(&smsc911x_device);
280         }
281 }
282 
283 static void __init mx31lite_timer_init(void)
284 {
285         mx31_clocks_init(26000000);
286 }
287 
288 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
289         /* Maintainer: Freescale Semiconductor, Inc. */
290         .atag_offset = 0x100,
291         .map_io = mx31lite_map_io,
292         .init_early = imx31_init_early,
293         .init_irq = mx31_init_irq,
294         .handle_irq = imx31_handle_irq,
295         .init_time      = mx31lite_timer_init,
296         .init_machine = mx31lite_init,
297         .restart        = mxc_restart,
298 MACHINE_END
299 

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