GNU Linux-libre 4.14.265-gnu1
[releases.git] / arch / arm / mach-imx / mach-mx31lite.c
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         /* UART1 */
56         MX31_PIN_CTS1__CTS1,
57         MX31_PIN_RTS1__RTS1,
58         MX31_PIN_TXD1__TXD1,
59         MX31_PIN_RXD1__RXD1,
60         /* SPI 0 */
61         MX31_PIN_CSPI1_SCLK__SCLK,
62         MX31_PIN_CSPI1_MOSI__MOSI,
63         MX31_PIN_CSPI1_MISO__MISO,
64         MX31_PIN_CSPI1_SPI_RDY__SPI_RDY,
65         MX31_PIN_CSPI1_SS0__SS0,
66         MX31_PIN_CSPI1_SS1__SS1,
67         MX31_PIN_CSPI1_SS2__SS2,
68         /* LAN9117 IRQ pin */
69         IOMUX_MODE(MX31_PIN_SFS6, IOMUX_CONFIG_GPIO),
70         /* SPI 1 */
71         MX31_PIN_CSPI2_SCLK__SCLK,
72         MX31_PIN_CSPI2_MOSI__MOSI,
73         MX31_PIN_CSPI2_MISO__MISO,
74         MX31_PIN_CSPI2_SPI_RDY__SPI_RDY,
75         MX31_PIN_CSPI2_SS0__SS0,
76         MX31_PIN_CSPI2_SS1__SS1,
77         MX31_PIN_CSPI2_SS2__SS2,
78 };
79
80 /* UART */
81 static const struct imxuart_platform_data uart_pdata __initconst = {
82         .flags = IMXUART_HAVE_RTSCTS,
83 };
84
85 /* SPI */
86 static int spi0_internal_chipselect[] = {
87         MXC_SPI_CS(0),
88         MXC_SPI_CS(1),
89         MXC_SPI_CS(2),
90 };
91
92 static const struct spi_imx_master spi0_pdata __initconst = {
93         .chipselect     = spi0_internal_chipselect,
94         .num_chipselect = ARRAY_SIZE(spi0_internal_chipselect),
95 };
96
97 static const struct mxc_nand_platform_data
98 mx31lite_nand_board_info __initconst  = {
99         .width = 1,
100         .hw_ecc = 1,
101 };
102
103 static struct smsc911x_platform_config smsc911x_config = {
104         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
105         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
106         .flags          = SMSC911X_USE_16BIT,
107 };
108
109 static struct resource smsc911x_resources[] = {
110         {
111                 .start          = MX31_CS4_BASE_ADDR,
112                 .end            = MX31_CS4_BASE_ADDR + 0x100,
113                 .flags          = IORESOURCE_MEM,
114         }, {
115                 /* irq number is run-time assigned */
116                 .flags          = IORESOURCE_IRQ,
117         },
118 };
119
120 static struct platform_device smsc911x_device = {
121         .name           = "smsc911x",
122         .id             = -1,
123         .num_resources  = ARRAY_SIZE(smsc911x_resources),
124         .resource       = smsc911x_resources,
125         .dev            = {
126                 .platform_data = &smsc911x_config,
127         },
128 };
129
130 /*
131  * SPI
132  *
133  * The MC13783 is the only hard-wired SPI device on the module.
134  */
135
136 static int spi1_internal_chipselect[] = {
137         MXC_SPI_CS(0),
138 };
139
140 static const struct spi_imx_master spi1_pdata __initconst = {
141         .chipselect     = spi1_internal_chipselect,
142         .num_chipselect = ARRAY_SIZE(spi1_internal_chipselect),
143 };
144
145 static struct mc13xxx_platform_data mc13783_pdata __initdata = {
146         .flags = MC13XXX_USE_RTC,
147 };
148
149 static struct spi_board_info mc13783_spi_dev __initdata = {
150         .modalias       = "mc13783",
151         .max_speed_hz   = 1000000,
152         .bus_num        = 1,
153         .chip_select    = 0,
154         .platform_data  = &mc13783_pdata,
155         /* irq number is run-time assigned */
156 };
157
158 /*
159  * USB
160  */
161
162 #define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
163                         PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
164
165 static int usbh2_init(struct platform_device *pdev)
166 {
167         int pins[] = {
168                 MX31_PIN_USBH2_DATA0__USBH2_DATA0,
169                 MX31_PIN_USBH2_DATA1__USBH2_DATA1,
170                 MX31_PIN_USBH2_CLK__USBH2_CLK,
171                 MX31_PIN_USBH2_DIR__USBH2_DIR,
172                 MX31_PIN_USBH2_NXT__USBH2_NXT,
173                 MX31_PIN_USBH2_STP__USBH2_STP,
174         };
175
176         mxc_iomux_setup_multiple_pins(pins, ARRAY_SIZE(pins), "USB H2");
177
178         mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
179         mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
180         mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
181         mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
182         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
183         mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
184         mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
185         mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
186         mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
187         mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
188         mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
189         mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
190
191         mxc_iomux_set_gpr(MUX_PGP_UH2, true);
192
193         /* chip select */
194         mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_DTR_DCE1, IOMUX_CONFIG_GPIO),
195                                 "USBH2_CS");
196         gpio_request(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), "USBH2 CS");
197         gpio_direction_output(IOMUX_TO_GPIO(MX31_PIN_DTR_DCE1), 0);
198
199         mdelay(10);
200
201         return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED);
202 }
203
204 static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
205         .init   = usbh2_init,
206         .portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
207 };
208
209 /*
210  * NOR flash
211  */
212
213 static struct physmap_flash_data nor_flash_data = {
214         .width  = 2,
215 };
216
217 static struct resource nor_flash_resource = {
218         .start  = 0xa0000000,
219         .end    = 0xa1ffffff,
220         .flags  = IORESOURCE_MEM,
221 };
222
223 static struct platform_device physmap_flash_device = {
224         .name   = "physmap-flash",
225         .id     = 0,
226         .dev    = {
227                 .platform_data  = &nor_flash_data,
228         },
229         .resource = &nor_flash_resource,
230         .num_resources = 1,
231 };
232
233 /*
234  * This structure defines the MX31 memory map.
235  */
236 static struct map_desc mx31lite_io_desc[] __initdata = {
237         {
238                 .virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
239                 .pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
240                 .length = MX31_CS4_SIZE,
241                 .type = MT_DEVICE
242         }
243 };
244
245 /*
246  * Set up static virtual mappings.
247  */
248 void __init mx31lite_map_io(void)
249 {
250         mx31_map_io();
251         iotable_init(mx31lite_io_desc, ARRAY_SIZE(mx31lite_io_desc));
252 }
253
254 static int mx31lite_baseboard;
255 core_param(mx31lite_baseboard, mx31lite_baseboard, int, 0444);
256
257 static struct regulator_consumer_supply dummy_supplies[] = {
258         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
259         REGULATOR_SUPPLY("vddvario", "smsc911x"),
260 };
261
262 static void __init mx31lite_init(void)
263 {
264         imx31_soc_init();
265
266         mxc_iomux_setup_multiple_pins(mx31lite_pins, ARRAY_SIZE(mx31lite_pins),
267                                       "mx31lite");
268
269         imx31_add_imx_uart0(&uart_pdata);
270         imx31_add_spi_imx0(&spi0_pdata);
271
272         /* NOR and NAND flash */
273         platform_device_register(&physmap_flash_device);
274         imx31_add_mxc_nand(&mx31lite_nand_board_info);
275
276         imx31_add_spi_imx1(&spi1_pdata);
277
278         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
279 }
280
281 static void __init mx31lite_late(void)
282 {
283         int ret;
284
285         if (mx31lite_baseboard == MX31LITE_DB)
286                 mx31lite_db_init();
287
288         mc13783_spi_dev.irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
289         spi_register_board_info(&mc13783_spi_dev, 1);
290
291         /* USB */
292         usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
293                         ULPI_OTG_DRVVBUS_EXT);
294         if (usbh2_pdata.otg)
295                 imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
296
297         /* SMSC9117 IRQ pin */
298         ret = gpio_request(IOMUX_TO_GPIO(MX31_PIN_SFS6), "sms9117-irq");
299         if (ret)
300                 pr_warn("could not get LAN irq gpio\n");
301         else {
302                 gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_SFS6));
303                 smsc911x_resources[1].start =
304                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
305                 smsc911x_resources[1].end =
306                         gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_SFS6));
307                 platform_device_register(&smsc911x_device);
308         }
309 }
310
311 static void __init mx31lite_timer_init(void)
312 {
313         mx31_clocks_init(26000000);
314 }
315
316 MACHINE_START(MX31LITE, "LogicPD i.MX31 SOM")
317         /* Maintainer: Freescale Semiconductor, Inc. */
318         .atag_offset = 0x100,
319         .map_io = mx31lite_map_io,
320         .init_early = imx31_init_early,
321         .init_irq = mx31_init_irq,
322         .init_time      = mx31lite_timer_init,
323         .init_machine = mx31lite_init,
324         .init_late      = mx31lite_late,
325         .restart        = mxc_restart,
326 MACHINE_END