1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
|
/*
*
* Copyright (C) 2010 Eric Bénard <eric@eukrea.com>
*
* based on board-mx51_babbage.c which is
* Copyright 2009 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright (C) 2009-2010 Amit Kucheria <amit.kucheria@canonical.com>
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/tsc2007.h>
#include <linux/gpio.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/i2c-gpio.h>
#include <linux/spi/spi.h>
#include <linux/can/platform/mcp251x.h>
#include <mach/eukrea-baseboards.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/iomux-mx51.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include "devices-imx51.h"
#include "cpu_op-mx51.h"
#define USBH1_RST IMX_GPIO_NR(2, 28)
#define ETH_RST IMX_GPIO_NR(2, 31)
#define TSC2007_IRQGPIO IMX_GPIO_NR(3, 12)
#define CAN_IRQGPIO IMX_GPIO_NR(1, 1)
#define CAN_RST IMX_GPIO_NR(4, 15)
#define CAN_NCS IMX_GPIO_NR(4, 24)
#define CAN_RXOBF IMX_GPIO_NR(1, 4)
#define CAN_RX1BF IMX_GPIO_NR(1, 6)
#define CAN_TXORTS IMX_GPIO_NR(1, 7)
#define CAN_TX1RTS IMX_GPIO_NR(1, 8)
#define CAN_TX2RTS IMX_GPIO_NR(1, 9)
#define I2C_SCL IMX_GPIO_NR(4, 16)
#define I2C_SDA IMX_GPIO_NR(4, 17)
/* USB_CTRL_1 */
#define MX51_USB_CTRL_1_OFFSET 0x10
#define MX51_USB_CTRL_UH1_EXT_CLK_EN (1 << 25)
#define MX51_USB_PLLDIV_12_MHZ 0x00
#define MX51_USB_PLL_DIV_19_2_MHZ 0x01
#define MX51_USB_PLL_DIV_24_MHZ 0x02
static iomux_v3_cfg_t eukrea_cpuimx51sd_pads[] = {
/* UART1 */
MX51_PAD_UART1_RXD__UART1_RXD,
MX51_PAD_UART1_TXD__UART1_TXD,
MX51_PAD_UART1_RTS__UART1_RTS,
MX51_PAD_UART1_CTS__UART1_CTS,
/* USB HOST1 */
MX51_PAD_USBH1_CLK__USBH1_CLK,
MX51_PAD_USBH1_DIR__USBH1_DIR,
MX51_PAD_USBH1_NXT__USBH1_NXT,
MX51_PAD_USBH1_DATA0__USBH1_DATA0,
MX51_PAD_USBH1_DATA1__USBH1_DATA1,
MX51_PAD_USBH1_DATA2__USBH1_DATA2,
MX51_PAD_USBH1_DATA3__USBH1_DATA3,
MX51_PAD_USBH1_DATA4__USBH1_DATA4,
MX51_PAD_USBH1_DATA5__USBH1_DATA5,
MX51_PAD_USBH1_DATA6__USBH1_DATA6,
MX51_PAD_USBH1_DATA7__USBH1_DATA7,
MX51_PAD_USBH1_STP__USBH1_STP,
MX51_PAD_EIM_CS3__GPIO2_28, /* PHY nRESET */
/* FEC */
MX51_PAD_EIM_DTACK__GPIO2_31, /* PHY nRESET */
/* HSI2C */
MX51_PAD_I2C1_CLK__GPIO4_16,
MX51_PAD_I2C1_DAT__GPIO4_17,
/* CAN */
MX51_PAD_CSPI1_MOSI__ECSPI1_MOSI,
MX51_PAD_CSPI1_MISO__ECSPI1_MISO,
MX51_PAD_CSPI1_SCLK__ECSPI1_SCLK,
MX51_PAD_CSPI1_SS0__GPIO4_24, /* nCS */
MX51_PAD_CSI2_PIXCLK__GPIO4_15, /* nReset */
MX51_PAD_GPIO1_1__GPIO1_1, /* IRQ */
MX51_PAD_GPIO1_4__GPIO1_4, /* Control signals */
MX51_PAD_GPIO1_6__GPIO1_6,
MX51_PAD_GPIO1_7__GPIO1_7,
MX51_PAD_GPIO1_8__GPIO1_8,
MX51_PAD_GPIO1_9__GPIO1_9,
/* Touchscreen */
/* IRQ */
NEW_PAD_CTRL(MX51_PAD_GPIO_NAND__GPIO_NAND, PAD_CTL_PUS_22K_UP |
PAD_CTL_PKE | PAD_CTL_SRE_FAST |
PAD_CTL_DSE_HIGH | PAD_CTL_PUE | PAD_CTL_HYS),
};
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct tsc2007_platform_data tsc2007_info = {
.model = 2007,
.x_plate_ohms = 180,
};
static struct i2c_board_info eukrea_cpuimx51sd_i2c_devices[] = {
{
I2C_BOARD_INFO("pcf8563", 0x51),
}, {
I2C_BOARD_INFO("tsc2007", 0x49),
.type = "tsc2007",
.platform_data = &tsc2007_info,
.irq = IMX_GPIO_TO_IRQ(TSC2007_IRQGPIO),
},
};
static const struct mxc_nand_platform_data
eukrea_cpuimx51sd_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
.flash_bbt = 1,
};
/* This function is board specific as the bit mask for the plldiv will also
be different for other Freescale SoCs, thus a common bitmask is not
possible and cannot get place in /plat-mxc/ehci.c.*/
static int initialize_otg_port(struct platform_device *pdev)
{
u32 v;
void __iomem *usb_base;
void __iomem *usbother_base;
usb_base = ioremap(MX51_USB_OTG_BASE_ADDR, SZ_4K);
if (!usb_base)
return -ENOMEM;
usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
/* Set the PHY clock to 19.2MHz */
v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
v |= MX51_USB_PLL_DIV_19_2_MHZ;
__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
iounmap(usb_base);
mdelay(10);
return mx51_initialize_usb_hw(0, MXC_EHCI_INTERNAL_PHY);
}
static int initialize_usbh1_port(struct platform_device *pdev)
{
u32 v;
void __iomem *usb_base;
void __iomem *usbother_base;
usb_base = ioremap(MX51_USB_OTG_BASE_ADDR, SZ_4K);
if (!usb_base)
return -ENOMEM;
usbother_base = usb_base + MX5_USBOTHER_REGS_OFFSET;
/* The clock for the USBH1 ULPI port will come from the PHY. */
v = __raw_readl(usbother_base + MX51_USB_CTRL_1_OFFSET);
__raw_writel(v | MX51_USB_CTRL_UH1_EXT_CLK_EN,
usbother_base + MX51_USB_CTRL_1_OFFSET);
iounmap(usb_base);
mdelay(10);
return mx51_initialize_usb_hw(1, MXC_EHCI_POWER_PINS_ENABLED |
MXC_EHCI_ITC_NO_THRESHOLD);
}
static const struct mxc_usbh_platform_data dr_utmi_config __initconst = {
.init = initialize_otg_port,
.portsc = MXC_EHCI_UTMI_16BIT,
};
static const struct fsl_usb2_platform_data usb_pdata __initconst = {
.operating_mode = FSL_USB2_DR_DEVICE,
.phy_mode = FSL_USB2_PHY_UTMI_WIDE,
};
static const struct mxc_usbh_platform_data usbh1_config __initconst = {
.init = initialize_usbh1_port,
.portsc = MXC_EHCI_MODE_ULPI,
};
static int otg_mode_host;
static int __init eukrea_cpuimx51sd_otg_mode(char *options)
{
if (!strcmp(options, "host"))
otg_mode_host = 1;
else if (!strcmp(options, "device"))
otg_mode_host = 0;
else
pr_info("otg_mode neither \"host\" nor \"device\". "
"Defaulting to device\n");
return 0;
}
__setup("otg_mode=", eukrea_cpuimx51sd_otg_mode);
static struct i2c_gpio_platform_data pdata = {
.sda_pin = I2C_SDA,
.sda_is_open_drain = 0,
.scl_pin = I2C_SCL,
.scl_is_open_drain = 0,
.udelay = 2,
};
static struct platform_device hsi2c_gpio_device = {
.name = "i2c-gpio",
.id = 0,
.dev.platform_data = &pdata,
};
static struct mcp251x_platform_data mcp251x_info = {
.oscillator_frequency = 24E6,
};
static struct spi_board_info cpuimx51sd_spi_device[] = {
{
.modalias = "mcp2515",
.max_speed_hz = 10000000,
.bus_num = 0,
.mode = SPI_MODE_0,
.chip_select = 0,
.platform_data = &mcp251x_info,
.irq = IMX_GPIO_TO_IRQ(CAN_IRQGPIO)
},
};
static int cpuimx51sd_spi1_cs[] = {
CAN_NCS,
};
static const struct spi_imx_master cpuimx51sd_ecspi1_pdata __initconst = {
.chipselect = cpuimx51sd_spi1_cs,
.num_chipselect = ARRAY_SIZE(cpuimx51sd_spi1_cs),
};
static struct platform_device *platform_devices[] __initdata = {
&hsi2c_gpio_device,
};
static void __init eukrea_cpuimx51sd_init(void)
{
imx51_soc_init();
mxc_iomux_v3_setup_multiple_pads(eukrea_cpuimx51sd_pads,
ARRAY_SIZE(eukrea_cpuimx51sd_pads));
#if defined(CONFIG_CPU_FREQ_IMX)
get_cpu_op = mx51_get_cpu_op;
#endif
imx51_add_imx_uart(0, &uart_pdata);
imx51_add_mxc_nand(&eukrea_cpuimx51sd_nand_board_info);
gpio_request(ETH_RST, "eth_rst");
gpio_set_value(ETH_RST, 1);
imx51_add_fec(NULL);
gpio_request(CAN_IRQGPIO, "can_irq");
gpio_direction_input(CAN_IRQGPIO);
gpio_free(CAN_IRQGPIO);
gpio_request(CAN_NCS, "can_ncs");
gpio_direction_output(CAN_NCS, 1);
gpio_free(CAN_NCS);
gpio_request(CAN_RST, "can_rst");
gpio_direction_output(CAN_RST, 0);
msleep(20);
gpio_set_value(CAN_RST, 1);
imx51_add_ecspi(0, &cpuimx51sd_ecspi1_pdata);
spi_register_board_info(cpuimx51sd_spi_device,
ARRAY_SIZE(cpuimx51sd_spi_device));
gpio_request(TSC2007_IRQGPIO, "tsc2007_irq");
gpio_direction_input(TSC2007_IRQGPIO);
gpio_free(TSC2007_IRQGPIO);
i2c_register_board_info(0, eukrea_cpuimx51sd_i2c_devices,
ARRAY_SIZE(eukrea_cpuimx51sd_i2c_devices));
platform_add_devices(platform_devices, ARRAY_SIZE(platform_devices));
if (otg_mode_host)
imx51_add_mxc_ehci_otg(&dr_utmi_config);
else {
initialize_otg_port(NULL);
imx51_add_fsl_usb2_udc(&usb_pdata);
}
gpio_request(USBH1_RST, "usb_rst");
gpio_direction_output(USBH1_RST, 0);
msleep(20);
gpio_set_value(USBH1_RST, 1);
imx51_add_mxc_ehci_hs(1, &usbh1_config);
#ifdef CONFIG_MACH_EUKREA_MBIMXSD51_BASEBOARD
eukrea_mbimxsd51_baseboard_init();
#endif
}
static void __init eukrea_cpuimx51sd_timer_init(void)
{
mx51_clocks_init(32768, 24000000, 22579200, 0);
}
static struct sys_timer mxc_timer = {
.init = eukrea_cpuimx51sd_timer_init,
};
MACHINE_START(EUKREA_CPUIMX51SD, "Eukrea CPUIMX51SD")
/* Maintainer: Eric Bénard <eric@eukrea.com> */
.boot_params = MX51_PHYS_OFFSET + 0x100,
.map_io = mx51_map_io,
.init_early = imx51_init_early,
.init_irq = mx51_init_irq,
.timer = &mxc_timer,
.init_machine = eukrea_cpuimx51sd_init,
MACHINE_END
|
