1 /*
2 * linux/arch/arm/mach-omap2/board-apollon.c
3 *
4 * Copyright (C) 2005,2006 Samsung Electronics
5 * Author: Kyungmin Park <kyungmin.park@samsung.com>
6 *
7 * Modified from mach-omap/omap2/board-h4.c
8 *
9 * Code for apollon OMAP2 board. Should work on many OMAP2 systems where
10 * the bootloader passes the board-specific data to the kernel.
11 * Do not put any board specific code to this file; create a new machine
12 * type if you need custom low-level initializations.
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License version 2 as
16 * published by the Free Software Foundation.
17 */
18
19 #include <linux/kernel.h>
20 #include <linux/init.h>
21 #include <linux/platform_device.h>
22 #include <linux/mtd/mtd.h>
23 #include <linux/mtd/partitions.h>
24 #include <linux/mtd/onenand.h>
25 #include <linux/delay.h>
26 #include <linux/leds.h>
27 #include <linux/err.h>
28 #include <linux/clk.h>
29
30 #include <mach/hardware.h>
31 #include <asm/mach-types.h>
32 #include <asm/mach/arch.h>
33 #include <asm/mach/flash.h>
34
35 #include <mach/gpio.h>
36 #include <mach/led.h>
37 #include <mach/mux.h>
38 #include <mach/usb.h>
39 #include <mach/board.h>
40 #include <mach/common.h>
41 #include <mach/gpmc.h>
42 #include <mach/control.h>
43
44 /* LED & Switch macros */
45 #define LED0_GPIO13 13
46 #define LED1_GPIO14 14
47 #define LED2_GPIO15 15
48 #define SW_ENTER_GPIO16 16
49 #define SW_UP_GPIO17 17
50 #define SW_DOWN_GPIO58 58
51
52 #define APOLLON_FLASH_CS 0
53 #define APOLLON_ETH_CS 1
54
55 static struct mtd_partition apollon_partitions[] = {
56 {
57 .name = "X-Loader + U-Boot",
58 .offset = 0,
59 .size = SZ_128K,
60 .mask_flags = MTD_WRITEABLE,
61 },
62 {
63 .name = "params",
64 .offset = MTDPART_OFS_APPEND,
65 .size = SZ_128K,
66 },
67 {
68 .name = "kernel",
69 .offset = MTDPART_OFS_APPEND,
70 .size = SZ_2M,
71 },
72 {
73 .name = "rootfs",
74 .offset = MTDPART_OFS_APPEND,
75 .size = SZ_16M,
76 },
77 {
78 .name = "filesystem00",
79 .offset = MTDPART_OFS_APPEND,
80 .size = SZ_32M,
81 },
82 {
83 .name = "filesystem01",
84 .offset = MTDPART_OFS_APPEND,
85 .size = MTDPART_SIZ_FULL,
86 },
87 };
88
89 static struct flash_platform_data apollon_flash_data = {
90 .parts = apollon_partitions,
91 .nr_parts = ARRAY_SIZE(apollon_partitions),
92 };
93
94 static struct resource apollon_flash_resource[] = {
95 [0] = {
96 .flags = IORESOURCE_MEM,
97 },
98 };
99
100 static struct platform_device apollon_onenand_device = {
101 .name = "onenand",
102 .id = -1,
103 .dev = {
104 .platform_data = &apollon_flash_data,
105 },
106 .num_resources = ARRAY_SIZE(apollon_flash_resource),
107 .resource = apollon_flash_resource,
108 };
109
apollon_flash_init(void)110 static void __init apollon_flash_init(void)
111 {
112 unsigned long base;
113
114 if (gpmc_cs_request(APOLLON_FLASH_CS, SZ_128K, &base) < 0) {
115 printk(KERN_ERR "Cannot request OneNAND GPMC CS\n");
116 return;
117 }
118 apollon_flash_resource[0].start = base;
119 apollon_flash_resource[0].end = base + SZ_128K - 1;
120 }
121
122 static struct resource apollon_smc91x_resources[] = {
123 [0] = {
124 .flags = IORESOURCE_MEM,
125 },
126 [1] = {
127 .start = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
128 .end = OMAP_GPIO_IRQ(APOLLON_ETHR_GPIO_IRQ),
129 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
130 },
131 };
132
133 static struct platform_device apollon_smc91x_device = {
134 .name = "smc91x",
135 .id = -1,
136 .num_resources = ARRAY_SIZE(apollon_smc91x_resources),
137 .resource = apollon_smc91x_resources,
138 };
139
140 static struct platform_device apollon_lcd_device = {
141 .name = "apollon_lcd",
142 .id = -1,
143 };
144
145 static struct omap_led_config apollon_led_config[] = {
146 {
147 .cdev = {
148 .name = "apollon:led0",
149 },
150 .gpio = LED0_GPIO13,
151 },
152 {
153 .cdev = {
154 .name = "apollon:led1",
155 },
156 .gpio = LED1_GPIO14,
157 },
158 {
159 .cdev = {
160 .name = "apollon:led2",
161 },
162 .gpio = LED2_GPIO15,
163 },
164 };
165
166 static struct omap_led_platform_data apollon_led_data = {
167 .nr_leds = ARRAY_SIZE(apollon_led_config),
168 .leds = apollon_led_config,
169 };
170
171 static struct platform_device apollon_led_device = {
172 .name = "omap-led",
173 .id = -1,
174 .dev = {
175 .platform_data = &apollon_led_data,
176 },
177 };
178
179 static struct platform_device *apollon_devices[] __initdata = {
180 &apollon_onenand_device,
181 &apollon_smc91x_device,
182 &apollon_lcd_device,
183 &apollon_led_device,
184 };
185
apollon_init_smc91x(void)186 static inline void __init apollon_init_smc91x(void)
187 {
188 unsigned long base;
189
190 unsigned int rate;
191 struct clk *gpmc_fck;
192 int eth_cs;
193
194 gpmc_fck = clk_get(NULL, "gpmc_fck"); /* Always on ENABLE_ON_INIT */
195 if (IS_ERR(gpmc_fck)) {
196 WARN_ON(1);
197 return;
198 }
199
200 clk_enable(gpmc_fck);
201 rate = clk_get_rate(gpmc_fck);
202
203 eth_cs = APOLLON_ETH_CS;
204
205 /* Make sure CS1 timings are correct */
206 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG1, 0x00011200);
207
208 if (rate >= 160000000) {
209 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f01);
210 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080803);
211 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1c0b1c0a);
212 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
213 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
214 } else if (rate >= 130000000) {
215 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
216 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
217 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
218 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x041f1F1F);
219 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000004C4);
220 } else {/* rate = 100000000 */
221 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG2, 0x001f1f00);
222 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG3, 0x00080802);
223 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG4, 0x1C091C09);
224 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG5, 0x031A1F1F);
225 gpmc_cs_write_reg(eth_cs, GPMC_CS_CONFIG6, 0x000003C2);
226 }
227
228 if (gpmc_cs_request(APOLLON_ETH_CS, SZ_16M, &base) < 0) {
229 printk(KERN_ERR "Failed to request GPMC CS for smc91x\n");
230 goto out;
231 }
232 apollon_smc91x_resources[0].start = base + 0x300;
233 apollon_smc91x_resources[0].end = base + 0x30f;
234 udelay(100);
235
236 omap_cfg_reg(W4__24XX_GPIO74);
237 if (gpio_request(APOLLON_ETHR_GPIO_IRQ, "SMC91x irq") < 0) {
238 printk(KERN_ERR "Failed to request GPIO%d for smc91x IRQ\n",
239 APOLLON_ETHR_GPIO_IRQ);
240 gpmc_cs_free(APOLLON_ETH_CS);
241 goto out;
242 }
243 gpio_direction_input(APOLLON_ETHR_GPIO_IRQ);
244
245 out:
246 clk_disable(gpmc_fck);
247 clk_put(gpmc_fck);
248 }
249
omap_apollon_init_irq(void)250 static void __init omap_apollon_init_irq(void)
251 {
252 omap2_init_common_hw();
253 omap_init_irq();
254 omap_gpio_init();
255 apollon_init_smc91x();
256 }
257
258 static struct omap_uart_config apollon_uart_config __initdata = {
259 .enabled_uarts = (1 << 0) | (0 << 1) | (0 << 2),
260 };
261
262 static struct omap_usb_config apollon_usb_config __initdata = {
263 .register_dev = 1,
264 .hmc_mode = 0x14, /* 0:dev 1:host1 2:disable */
265
266 .pins[0] = 6,
267 };
268
269 static struct omap_lcd_config apollon_lcd_config __initdata = {
270 .ctrl_name = "internal",
271 };
272
273 static struct omap_board_config_kernel apollon_config[] = {
274 { OMAP_TAG_UART, &apollon_uart_config },
275 { OMAP_TAG_USB, &apollon_usb_config },
276 { OMAP_TAG_LCD, &apollon_lcd_config },
277 };
278
apollon_led_init(void)279 static void __init apollon_led_init(void)
280 {
281 /* LED0 - AA10 */
282 omap_cfg_reg(AA10_242X_GPIO13);
283 gpio_request(LED0_GPIO13, "LED0");
284 gpio_direction_output(LED0_GPIO13, 0);
285 /* LED1 - AA6 */
286 omap_cfg_reg(AA6_242X_GPIO14);
287 gpio_request(LED1_GPIO14, "LED1");
288 gpio_direction_output(LED1_GPIO14, 0);
289 /* LED2 - AA4 */
290 omap_cfg_reg(AA4_242X_GPIO15);
291 gpio_request(LED2_GPIO15, "LED2");
292 gpio_direction_output(LED2_GPIO15, 0);
293 }
294
apollon_usb_init(void)295 static void __init apollon_usb_init(void)
296 {
297 /* USB device */
298 /* DEVICE_SUSPEND */
299 omap_cfg_reg(P21_242X_GPIO12);
300 gpio_request(12, "USB suspend");
301 gpio_direction_output(12, 0);
302 }
303
omap_apollon_init(void)304 static void __init omap_apollon_init(void)
305 {
306 u32 v;
307
308 apollon_led_init();
309 apollon_flash_init();
310 apollon_usb_init();
311
312 /* REVISIT: where's the correct place */
313 omap_cfg_reg(W19_24XX_SYS_NIRQ);
314
315 /* Use Interal loop-back in MMC/SDIO Module Input Clock selection */
316 v = omap_ctrl_readl(OMAP2_CONTROL_DEVCONF0);
317 v |= (1 << 24);
318 omap_ctrl_writel(v, OMAP2_CONTROL_DEVCONF0);
319
320 /*
321 * Make sure the serial ports are muxed on at this point.
322 * You have to mux them off in device drivers later on
323 * if not needed.
324 */
325 platform_add_devices(apollon_devices, ARRAY_SIZE(apollon_devices));
326 omap_board_config = apollon_config;
327 omap_board_config_size = ARRAY_SIZE(apollon_config);
328 omap_serial_init();
329 }
330
omap_apollon_map_io(void)331 static void __init omap_apollon_map_io(void)
332 {
333 omap2_set_globals_242x();
334 omap2_map_common_io();
335 }
336
337 MACHINE_START(OMAP_APOLLON, "OMAP24xx Apollon")
338 /* Maintainer: Kyungmin Park <kyungmin.park@samsung.com> */
339 .phys_io = 0x48000000,
340 .io_pg_offst = ((0xd8000000) >> 18) & 0xfffc,
341 .boot_params = 0x80000100,
342 .map_io = omap_apollon_map_io,
343 .init_irq = omap_apollon_init_irq,
344 .init_machine = omap_apollon_init,
345 .timer = &omap_timer,
346 MACHINE_END
347