xref: /openbmc/u-boot/board/overo/overo.c (revision e8f80a5a)
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