1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Maintainer : Steve Sakoman <steve@sakoman.com>
4 *
5 * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
6 * Richard Woodruff <r-woodruff2@ti.com>
7 * Syed Mohammed Khasim <khasim@ti.com>
8 * Sunil Kumar <sunilsaini05@gmail.com>
9 * Shashi Ranjan <shashiranjanmca05@gmail.com>
10 *
11 * (C) Copyright 2004-2008
12 * Texas Instruments, <www.ti.com>
13 */
14 #include <common.h>
15 #include <dm.h>
16 #include <ns16550.h>
17 #include <netdev.h>
18 #include <twl4030.h>
19 #include <linux/mtd/rawnand.h>
20 #include <asm/io.h>
21 #include <asm/arch/mmc_host_def.h>
22 #include <asm/arch/mux.h>
23 #include <asm/arch/mem.h>
24 #include <asm/arch/sys_proto.h>
25 #include <asm/gpio.h>
26 #include <asm/mach-types.h>
27 #include "overo.h"
28
29 #ifdef CONFIG_USB_EHCI_HCD
30 #include <usb.h>
31 #include <asm/ehci-omap.h>
32 #endif
33
34 #define TWL4030_I2C_BUS 0
35 #define EXPANSION_EEPROM_I2C_BUS 2
36 #define EXPANSION_EEPROM_I2C_ADDRESS 0x51
37
38 #define GUMSTIX_EMPTY_EEPROM 0x0
39
40 #define GUMSTIX_SUMMIT 0x01000200
41 #define GUMSTIX_TOBI 0x02000200
42 #define GUMSTIX_TOBI_DUO 0x03000200
43 #define GUMSTIX_PALO35 0x04000200
44 #define GUMSTIX_PALO43 0x05000200
45 #define GUMSTIX_CHESTNUT43 0x06000200
46 #define GUMSTIX_PINTO 0x07000200
47 #define GUMSTIX_GALLOP43 0x08000200
48 #define GUMSTIX_ALTO35 0x09000200
49 #define GUMSTIX_STAGECOACH 0x0A000200
50 #define GUMSTIX_THUMBO 0x0B000200
51 #define GUMSTIX_TURTLECORE 0x0C000200
52 #define GUMSTIX_ARBOR43C 0x0D000200
53
54 #define ETTUS_USRP_E 0x01000300
55
56 #define GUMSTIX_NO_EEPROM 0xffffffff
57
58 static struct {
59 unsigned int device_vendor;
60 unsigned char revision;
61 unsigned char content;
62 char fab_revision[8];
63 char env_var[16];
64 char env_setting[64];
65 } expansion_config = {0x0};
66
67 static const struct ns16550_platdata overo_serial = {
68 .base = OMAP34XX_UART3,
69 .reg_shift = 2,
70 .clock = V_NS16550_CLK,
71 .fcr = UART_FCR_DEFVAL,
72 };
73
74 U_BOOT_DEVICE(overo_uart) = {
75 "ns16550_serial",
76 &overo_serial
77 };
78
79 /*
80 * Routine: get_sdio2_config
81 * Description: Return information about the wifi module connection
82 * Returns 0 if the module connects though a level translator
83 * Returns 1 if the module connects directly
84 */
get_sdio2_config(void)85 int get_sdio2_config(void)
86 {
87 int sdio_direct;
88
89 if (!gpio_request(130, "") && !gpio_request(139, "")) {
90
91 gpio_direction_output(130, 0);
92 gpio_direction_input(139);
93
94 sdio_direct = 1;
95 gpio_set_value(130, 0);
96 if (gpio_get_value(139) == 0) {
97 gpio_set_value(130, 1);
98 if (gpio_get_value(139) == 1)
99 sdio_direct = 0;
100 }
101
102 gpio_direction_input(130);
103 } else {
104 puts("Error: unable to acquire sdio2 clk GPIOs\n");
105 sdio_direct = -1;
106 }
107
108 return sdio_direct;
109 }
110
111 /*
112 * Routine: get_expansion_id
113 * Description: This function checks for expansion board by checking I2C
114 * bus 2 for the availability of an AT24C01B serial EEPROM.
115 * returns the device_vendor field from the EEPROM
116 */
get_expansion_id(void)117 unsigned int get_expansion_id(void)
118 {
119 if (expansion_config.device_vendor != 0x0)
120 return expansion_config.device_vendor;
121
122 i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
123
124 /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
125 if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
126 i2c_set_bus_num(TWL4030_I2C_BUS);
127 return GUMSTIX_NO_EEPROM;
128 }
129
130 /* read configuration data */
131 i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
132 sizeof(expansion_config));
133
134 i2c_set_bus_num(TWL4030_I2C_BUS);
135
136 return expansion_config.device_vendor;
137 }
138
139 /*
140 * Routine: misc_init_r
141 * Description: Configure board specific parts
142 */
misc_init_r(void)143 int misc_init_r(void)
144 {
145 unsigned int expansion_id;
146
147 twl4030_power_init();
148 twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
149
150 printf("Board revision: %d\n", get_board_revision());
151
152 switch (get_sdio2_config()) {
153 case 0:
154 puts("Tranceiver detected on mmc2\n");
155 MUX_OVERO_SDIO2_TRANSCEIVER();
156 break;
157 case 1:
158 puts("Direct connection on mmc2\n");
159 MUX_OVERO_SDIO2_DIRECT();
160 break;
161 default:
162 puts("Unable to detect mmc2 connection type\n");
163 }
164
165 expansion_id = get_expansion_id();
166 switch (expansion_id) {
167 case GUMSTIX_SUMMIT:
168 printf("Recognized Summit expansion board (rev %d %s)\n",
169 expansion_config.revision,
170 expansion_config.fab_revision);
171 MUX_GUMSTIX();
172 env_set("defaultdisplay", "dvi");
173 env_set("expansionname", "summit");
174 break;
175 case GUMSTIX_TOBI:
176 printf("Recognized Tobi expansion board (rev %d %s)\n",
177 expansion_config.revision,
178 expansion_config.fab_revision);
179 MUX_GUMSTIX();
180 env_set("defaultdisplay", "dvi");
181 env_set("expansionname", "tobi");
182 break;
183 case GUMSTIX_TOBI_DUO:
184 printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
185 expansion_config.revision,
186 expansion_config.fab_revision);
187 MUX_GUMSTIX();
188 env_set("expansionname", "tobiduo");
189 break;
190 case GUMSTIX_PALO35:
191 printf("Recognized Palo35 expansion board (rev %d %s)\n",
192 expansion_config.revision,
193 expansion_config.fab_revision);
194 MUX_GUMSTIX();
195 env_set("defaultdisplay", "lcd35");
196 env_set("expansionname", "palo35");
197 break;
198 case GUMSTIX_PALO43:
199 printf("Recognized Palo43 expansion board (rev %d %s)\n",
200 expansion_config.revision,
201 expansion_config.fab_revision);
202 MUX_GUMSTIX();
203 env_set("defaultdisplay", "lcd43");
204 env_set("expansionname", "palo43");
205 break;
206 case GUMSTIX_CHESTNUT43:
207 printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
208 expansion_config.revision,
209 expansion_config.fab_revision);
210 MUX_GUMSTIX();
211 env_set("defaultdisplay", "lcd43");
212 env_set("expansionname", "chestnut43");
213 break;
214 case GUMSTIX_PINTO:
215 printf("Recognized Pinto expansion board (rev %d %s)\n",
216 expansion_config.revision,
217 expansion_config.fab_revision);
218 MUX_GUMSTIX();
219 break;
220 case GUMSTIX_GALLOP43:
221 printf("Recognized Gallop43 expansion board (rev %d %s)\n",
222 expansion_config.revision,
223 expansion_config.fab_revision);
224 MUX_GUMSTIX();
225 env_set("defaultdisplay", "lcd43");
226 env_set("expansionname", "gallop43");
227 break;
228 case GUMSTIX_ALTO35:
229 printf("Recognized Alto35 expansion board (rev %d %s)\n",
230 expansion_config.revision,
231 expansion_config.fab_revision);
232 MUX_GUMSTIX();
233 MUX_ALTO35();
234 env_set("defaultdisplay", "lcd35");
235 env_set("expansionname", "alto35");
236 break;
237 case GUMSTIX_STAGECOACH:
238 printf("Recognized Stagecoach expansion board (rev %d %s)\n",
239 expansion_config.revision,
240 expansion_config.fab_revision);
241 MUX_GUMSTIX();
242 break;
243 case GUMSTIX_THUMBO:
244 printf("Recognized Thumbo expansion board (rev %d %s)\n",
245 expansion_config.revision,
246 expansion_config.fab_revision);
247 MUX_GUMSTIX();
248 break;
249 case GUMSTIX_TURTLECORE:
250 printf("Recognized Turtlecore expansion board (rev %d %s)\n",
251 expansion_config.revision,
252 expansion_config.fab_revision);
253 MUX_GUMSTIX();
254 break;
255 case GUMSTIX_ARBOR43C:
256 printf("Recognized Arbor43C expansion board (rev %d %s)\n",
257 expansion_config.revision,
258 expansion_config.fab_revision);
259 MUX_GUMSTIX();
260 MUX_ARBOR43C();
261 env_set("defaultdisplay", "lcd43");
262 env_set("expansionname", "arbor43c");
263 break;
264 case ETTUS_USRP_E:
265 printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
266 expansion_config.revision,
267 expansion_config.fab_revision);
268 MUX_GUMSTIX();
269 MUX_USRP_E();
270 env_set("defaultdisplay", "dvi");
271 break;
272 case GUMSTIX_NO_EEPROM:
273 case GUMSTIX_EMPTY_EEPROM:
274 puts("No or empty EEPROM on expansion board\n");
275 MUX_GUMSTIX();
276 env_set("expansionname", "tobi");
277 break;
278 default:
279 printf("Unrecognized expansion board 0x%08x\n", expansion_id);
280 break;
281 }
282
283 if (expansion_config.content == 1)
284 env_set(expansion_config.env_var, expansion_config.env_setting);
285
286 omap_die_id_display();
287
288 if (get_cpu_family() == CPU_OMAP34XX)
289 env_set("boardname", "overo");
290 else
291 env_set("boardname", "overo-storm");
292
293 return 0;
294 }
295
296 #if defined(CONFIG_CMD_NET)
297 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */
298 static const u32 gpmc_lan_config[] = {
299 NET_LAN9221_GPMC_CONFIG1,
300 NET_LAN9221_GPMC_CONFIG2,
301 NET_LAN9221_GPMC_CONFIG3,
302 NET_LAN9221_GPMC_CONFIG4,
303 NET_LAN9221_GPMC_CONFIG5,
304 NET_LAN9221_GPMC_CONFIG6,
305 /*CONFIG7- computed as params */
306 };
307
308 /*
309 * Routine: setup_net_chip
310 * Description: Setting up the configuration GPMC registers specific to the
311 * Ethernet hardware.
312 */
setup_net_chip(void)313 static void setup_net_chip(void)
314 {
315 struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
316
317 /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
318 writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
319 /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
320 writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
321 /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
322 writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
323 &ctrl_base->gpmc_nadv_ale);
324 }
325
326 /*
327 * Routine: reset_net_chip
328 * Description: Reset the Ethernet hardware.
329 */
reset_net_chip(void)330 static void reset_net_chip(void)
331 {
332 /* Make GPIO 64 as output pin and send a magic pulse through it */
333 if (!gpio_request(64, "")) {
334 gpio_direction_output(64, 0);
335 gpio_set_value(64, 1);
336 udelay(1);
337 gpio_set_value(64, 0);
338 udelay(1);
339 gpio_set_value(64, 1);
340 }
341 }
342
board_eth_init(bd_t * bis)343 int board_eth_init(bd_t *bis)
344 {
345 unsigned int expansion_id;
346 int rc = 0;
347
348 #ifdef CONFIG_SMC911X
349 expansion_id = get_expansion_id();
350 switch (expansion_id) {
351 case GUMSTIX_TOBI_DUO:
352 /* second lan chip */
353 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
354 0x2B000000, GPMC_SIZE_16M);
355 /* no break */
356 case GUMSTIX_TOBI:
357 case GUMSTIX_CHESTNUT43:
358 case GUMSTIX_STAGECOACH:
359 case GUMSTIX_NO_EEPROM:
360 case GUMSTIX_EMPTY_EEPROM:
361 /* first lan chip */
362 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
363 0x2C000000, GPMC_SIZE_16M);
364
365 setup_net_chip();
366 reset_net_chip();
367
368 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
369 break;
370 default:
371 break;
372 }
373 #endif
374
375 return rc;
376 }
377 #endif
378
379 #if defined(CONFIG_MMC)
board_mmc_init(bd_t * bis)380 int board_mmc_init(bd_t *bis)
381 {
382 return omap_mmc_init(0, 0, 0, -1, -1);
383 }
384 #endif
385
386 #if defined(CONFIG_MMC)
board_mmc_power_init(void)387 void board_mmc_power_init(void)
388 {
389 twl4030_power_mmc_init(0);
390 }
391 #endif
392
393 #if defined(CONFIG_USB_EHCI_HCD)
394 static struct omap_usbhs_board_data usbhs_bdata = {
395 .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
396 .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
397 .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
398 };
399
400 #define GUMSTIX_GPIO_USBH_CPEN 168
ehci_hcd_init(int index,enum usb_init_type init,struct ehci_hccr ** hccr,struct ehci_hcor ** hcor)401 int ehci_hcd_init(int index, enum usb_init_type init,
402 struct ehci_hccr **hccr, struct ehci_hcor **hcor)
403 {
404 /* Enable USB power */
405 if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
406 gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);
407
408 return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
409 }
410
ehci_hcd_stop(void)411 int ehci_hcd_stop(void)
412 {
413 /* Disable USB power */
414 gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
415 gpio_free(GUMSTIX_GPIO_USBH_CPEN);
416
417 return omap_ehci_hcd_stop();
418 }
419
420 #endif /* CONFIG_USB_EHCI_HCD */
421