1 /*
2 * linux/arch/arm/mach-omap2/board-cm-t3517.c
3 *
4 * Support for the CompuLab CM-T3517 modules
5 *
6 * Copyright (C) 2010 CompuLab, Ltd.
7 * Author: Igor Grinberg <grinberg@compulab.co.il>
8 *
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License
11 * version 2 as published by the Free Software Foundation.
12 *
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
21 * 02110-1301 USA
22 *
23 */
24
25 #include <linux/kernel.h>
26 #include <linux/init.h>
27 #include <linux/platform_device.h>
28 #include <linux/delay.h>
29 #include <linux/gpio.h>
30 #include <linux/leds.h>
31 #include <linux/rtc-v3020.h>
32 #include <linux/mtd/mtd.h>
33 #include <linux/mtd/nand.h>
34 #include <linux/mtd/partitions.h>
35 #include <linux/can/platform/ti_hecc.h>
36
37 #include <asm/mach-types.h>
38 #include <asm/mach/arch.h>
39 #include <asm/mach/map.h>
40
41 #include <plat/board.h>
42 #include "common.h"
43 #include <plat/usb.h>
44 #include <plat/nand.h>
45 #include <plat/gpmc.h>
46
47 #include <mach/am35xx.h>
48
49 #include "mux.h"
50 #include "control.h"
51 #include "common-board-devices.h"
52 #include "am35xx-emac.h"
53
54 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
55 static struct gpio_led cm_t3517_leds[] = {
56 [0] = {
57 .gpio = 186,
58 .name = "cm-t3517:green",
59 .default_trigger = "heartbeat",
60 .active_low = 0,
61 },
62 };
63
64 static struct gpio_led_platform_data cm_t3517_led_pdata = {
65 .num_leds = ARRAY_SIZE(cm_t3517_leds),
66 .leds = cm_t3517_leds,
67 };
68
69 static struct platform_device cm_t3517_led_device = {
70 .name = "leds-gpio",
71 .id = -1,
72 .dev = {
73 .platform_data = &cm_t3517_led_pdata,
74 },
75 };
76
cm_t3517_init_leds(void)77 static void __init cm_t3517_init_leds(void)
78 {
79 platform_device_register(&cm_t3517_led_device);
80 }
81 #else
cm_t3517_init_leds(void)82 static inline void cm_t3517_init_leds(void) {}
83 #endif
84
85 #if defined(CONFIG_CAN_TI_HECC) || defined(CONFIG_CAN_TI_HECC_MODULE)
86 static struct resource cm_t3517_hecc_resources[] = {
87 {
88 .start = AM35XX_IPSS_HECC_BASE,
89 .end = AM35XX_IPSS_HECC_BASE + SZ_16K - 1,
90 .flags = IORESOURCE_MEM,
91 },
92 {
93 .start = INT_35XX_HECC0_IRQ,
94 .end = INT_35XX_HECC0_IRQ,
95 .flags = IORESOURCE_IRQ,
96 },
97 };
98
99 static struct ti_hecc_platform_data cm_t3517_hecc_pdata = {
100 .scc_hecc_offset = AM35XX_HECC_SCC_HECC_OFFSET,
101 .scc_ram_offset = AM35XX_HECC_SCC_RAM_OFFSET,
102 .hecc_ram_offset = AM35XX_HECC_RAM_OFFSET,
103 .mbx_offset = AM35XX_HECC_MBOX_OFFSET,
104 .int_line = AM35XX_HECC_INT_LINE,
105 .version = AM35XX_HECC_VERSION,
106 };
107
108 static struct platform_device cm_t3517_hecc_device = {
109 .name = "ti_hecc",
110 .id = 1,
111 .num_resources = ARRAY_SIZE(cm_t3517_hecc_resources),
112 .resource = cm_t3517_hecc_resources,
113 .dev = {
114 .platform_data = &cm_t3517_hecc_pdata,
115 },
116 };
117
cm_t3517_init_hecc(void)118 static void cm_t3517_init_hecc(void)
119 {
120 platform_device_register(&cm_t3517_hecc_device);
121 }
122 #else
cm_t3517_init_hecc(void)123 static inline void cm_t3517_init_hecc(void) {}
124 #endif
125
126 #if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
127 #define RTC_IO_GPIO (153)
128 #define RTC_WR_GPIO (154)
129 #define RTC_RD_GPIO (53)
130 #define RTC_CS_GPIO (163)
131 #define RTC_CS_EN_GPIO (160)
132
133 struct v3020_platform_data cm_t3517_v3020_pdata = {
134 .use_gpio = 1,
135 .gpio_cs = RTC_CS_GPIO,
136 .gpio_wr = RTC_WR_GPIO,
137 .gpio_rd = RTC_RD_GPIO,
138 .gpio_io = RTC_IO_GPIO,
139 };
140
141 static struct platform_device cm_t3517_rtc_device = {
142 .name = "v3020",
143 .id = -1,
144 .dev = {
145 .platform_data = &cm_t3517_v3020_pdata,
146 }
147 };
148
cm_t3517_init_rtc(void)149 static void __init cm_t3517_init_rtc(void)
150 {
151 int err;
152
153 err = gpio_request_one(RTC_CS_EN_GPIO, GPIOF_OUT_INIT_HIGH,
154 "rtc cs en");
155 if (err) {
156 pr_err("CM-T3517: rtc cs en gpio request failed: %d\n", err);
157 return;
158 }
159
160 platform_device_register(&cm_t3517_rtc_device);
161 }
162 #else
cm_t3517_init_rtc(void)163 static inline void cm_t3517_init_rtc(void) {}
164 #endif
165
166 #if defined(CONFIG_USB_EHCI_HCD) || defined(CONFIG_USB_EHCI_HCD_MODULE)
167 #define HSUSB1_RESET_GPIO (146)
168 #define HSUSB2_RESET_GPIO (147)
169 #define USB_HUB_RESET_GPIO (152)
170
171 static struct usbhs_omap_board_data cm_t3517_ehci_pdata __initdata = {
172 .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
173 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
174 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
175
176 .phy_reset = true,
177 .reset_gpio_port[0] = HSUSB1_RESET_GPIO,
178 .reset_gpio_port[1] = HSUSB2_RESET_GPIO,
179 .reset_gpio_port[2] = -EINVAL,
180 };
181
cm_t3517_init_usbh(void)182 static int __init cm_t3517_init_usbh(void)
183 {
184 int err;
185
186 err = gpio_request_one(USB_HUB_RESET_GPIO, GPIOF_OUT_INIT_LOW,
187 "usb hub rst");
188 if (err) {
189 pr_err("CM-T3517: usb hub rst gpio request failed: %d\n", err);
190 } else {
191 udelay(10);
192 gpio_set_value(USB_HUB_RESET_GPIO, 1);
193 msleep(1);
194 }
195
196 usbhs_init(&cm_t3517_ehci_pdata);
197
198 return 0;
199 }
200 #else
cm_t3517_init_usbh(void)201 static inline int cm_t3517_init_usbh(void)
202 {
203 return 0;
204 }
205 #endif
206
207 #if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
208 static struct mtd_partition cm_t3517_nand_partitions[] = {
209 {
210 .name = "xloader",
211 .offset = 0, /* Offset = 0x00000 */
212 .size = 4 * NAND_BLOCK_SIZE,
213 .mask_flags = MTD_WRITEABLE
214 },
215 {
216 .name = "uboot",
217 .offset = MTDPART_OFS_APPEND, /* Offset = 0x80000 */
218 .size = 15 * NAND_BLOCK_SIZE,
219 },
220 {
221 .name = "uboot environment",
222 .offset = MTDPART_OFS_APPEND, /* Offset = 0x260000 */
223 .size = 2 * NAND_BLOCK_SIZE,
224 },
225 {
226 .name = "linux",
227 .offset = MTDPART_OFS_APPEND, /* Offset = 0x2A0000 */
228 .size = 32 * NAND_BLOCK_SIZE,
229 },
230 {
231 .name = "rootfs",
232 .offset = MTDPART_OFS_APPEND, /* Offset = 0x6A0000 */
233 .size = MTDPART_SIZ_FULL,
234 },
235 };
236
237 static struct omap_nand_platform_data cm_t3517_nand_data = {
238 .parts = cm_t3517_nand_partitions,
239 .nr_parts = ARRAY_SIZE(cm_t3517_nand_partitions),
240 .cs = 0,
241 };
242
cm_t3517_init_nand(void)243 static void __init cm_t3517_init_nand(void)
244 {
245 if (gpmc_nand_init(&cm_t3517_nand_data) < 0)
246 pr_err("CM-T3517: NAND initialization failed\n");
247 }
248 #else
cm_t3517_init_nand(void)249 static inline void cm_t3517_init_nand(void) {}
250 #endif
251
252 static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
253 };
254
255 #ifdef CONFIG_OMAP_MUX
256 static struct omap_board_mux board_mux[] __initdata = {
257 /* GPIO186 - Green LED */
258 OMAP3_MUX(SYS_CLKOUT2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
259
260 /* RTC GPIOs: */
261 /* IO - GPIO153 */
262 OMAP3_MUX(MCBSP4_DR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
263 /* WR# - GPIO154 */
264 OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
265 /* RD# - GPIO53 */
266 OMAP3_MUX(GPMC_NCS2, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
267 /* CS# - GPIO163 */
268 OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
269 /* CS EN - GPIO160 */
270 OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
271
272 /* HSUSB1 RESET */
273 OMAP3_MUX(UART2_TX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
274 /* HSUSB2 RESET */
275 OMAP3_MUX(UART2_RX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
276 /* CM-T3517 USB HUB nRESET */
277 OMAP3_MUX(MCBSP4_CLKX, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
278
279 { .reg_offset = OMAP_MUX_TERMINATOR },
280 };
281 #endif
282
cm_t3517_init(void)283 static void __init cm_t3517_init(void)
284 {
285 omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
286 omap_serial_init();
287 omap_sdrc_init(NULL, NULL);
288 omap_board_config = cm_t3517_config;
289 omap_board_config_size = ARRAY_SIZE(cm_t3517_config);
290 cm_t3517_init_leds();
291 cm_t3517_init_nand();
292 cm_t3517_init_rtc();
293 cm_t3517_init_usbh();
294 cm_t3517_init_hecc();
295 am35xx_emac_init(AM35XX_DEFAULT_MDIO_FREQUENCY, 1);
296 }
297
298 MACHINE_START(CM_T3517, "Compulab CM-T3517")
299 .atag_offset = 0x100,
300 .reserve = omap_reserve,
301 .map_io = omap3_map_io,
302 .init_early = am35xx_init_early,
303 .init_irq = omap3_init_irq,
304 .handle_irq = omap3_intc_handle_irq,
305 .init_machine = cm_t3517_init,
306 .timer = &omap3_timer,
307 .restart = omap_prcm_restart,
308 MACHINE_END
309