]> git.kernelconcepts.de Git - karo-tx-uboot.git/blob - board/overo/overo.c
omap3/am33xx: mux: fix several checkpatch issues
[karo-tx-uboot.git] / board / overo / overo.c
1 /*
2  * Maintainer : Steve Sakoman <steve@sakoman.com>
3  *
4  * Derived from Beagle Board, 3430 SDP, and OMAP3EVM code by
5  *      Richard Woodruff <r-woodruff2@ti.com>
6  *      Syed Mohammed Khasim <khasim@ti.com>
7  *      Sunil Kumar <sunilsaini05@gmail.com>
8  *      Shashi Ranjan <shashiranjanmca05@gmail.com>
9  *
10  * (C) Copyright 2004-2008
11  * Texas Instruments, <www.ti.com>
12  *
13  * SPDX-License-Identifier:     GPL-2.0+
14  */
15 #include <common.h>
16 #include <netdev.h>
17 #include <twl4030.h>
18 #include <linux/mtd/nand.h>
19 #include <asm/io.h>
20 #include <asm/arch/mmc_host_def.h>
21 #include <asm/arch/mux.h>
22 #include <asm/arch/mem.h>
23 #include <asm/arch/sys_proto.h>
24 #include <asm/gpio.h>
25 #include <asm/mach-types.h>
26 #include "overo.h"
27
28 #ifdef CONFIG_USB_EHCI
29 #include <usb.h>
30 #include <asm/ehci-omap.h>
31 #endif
32
33 DECLARE_GLOBAL_DATA_PTR;
34
35 #define TWL4030_I2C_BUS                 0
36 #define EXPANSION_EEPROM_I2C_BUS        2
37 #define EXPANSION_EEPROM_I2C_ADDRESS    0x51
38
39 #define GUMSTIX_EMPTY_EEPROM            0x0
40
41 #define GUMSTIX_SUMMIT                  0x01000200
42 #define GUMSTIX_TOBI                    0x02000200
43 #define GUMSTIX_TOBI_DUO                0x03000200
44 #define GUMSTIX_PALO35                  0x04000200
45 #define GUMSTIX_PALO43                  0x05000200
46 #define GUMSTIX_CHESTNUT43              0x06000200
47 #define GUMSTIX_PINTO                   0x07000200
48 #define GUMSTIX_GALLOP43                0x08000200
49 #define GUMSTIX_ALTO35                  0x09000200
50 #define GUMSTIX_STAGECOACH              0x0A000200
51 #define GUMSTIX_THUMBO                  0x0B000200
52 #define GUMSTIX_TURTLECORE              0x0C000200
53 #define GUMSTIX_ARBOR43C                0x0D000200
54
55 #define ETTUS_USRP_E                    0x01000300
56
57 #define GUMSTIX_NO_EEPROM               0xffffffff
58
59 static struct {
60         unsigned int device_vendor;
61         unsigned char revision;
62         unsigned char content;
63         char fab_revision[8];
64         char env_var[16];
65         char env_setting[64];
66 } expansion_config = {0x0};
67
68 /*
69  * Routine: board_init
70  * Description: Early hardware init.
71  */
72 int board_init(void)
73 {
74         gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
75         /* board id for Linux */
76         gd->bd->bi_arch_number = MACH_TYPE_OVERO;
77         /* boot param addr */
78         gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
79
80         return 0;
81 }
82
83 /*
84  * Routine: get_board_revision
85  * Description: Returns the board revision
86  */
87 int get_board_revision(void)
88 {
89         int revision;
90
91 #ifdef CONFIG_SYS_I2C_OMAP34XX
92         unsigned char data;
93
94         /* board revisions <= R2410 connect 4030 irq_1 to gpio112             */
95         /* these boards should return a revision number of 0                  */
96         /* the code below forces a 4030 RTC irq to ensure that gpio112 is low */
97         i2c_set_bus_num(TWL4030_I2C_BUS);
98         data = 0x01;
99         i2c_write(0x4B, 0x29, 1, &data, 1);
100         data = 0x0c;
101         i2c_write(0x4B, 0x2b, 1, &data, 1);
102         i2c_read(0x4B, 0x2a, 1, &data, 1);
103 #endif
104
105         if (!gpio_request(112, "") &&
106             !gpio_request(113, "") &&
107             !gpio_request(115, "")) {
108
109                 gpio_direction_input(112);
110                 gpio_direction_input(113);
111                 gpio_direction_input(115);
112
113                 revision = gpio_get_value(115) << 2 |
114                            gpio_get_value(113) << 1 |
115                            gpio_get_value(112);
116         } else {
117                 puts("Error: unable to acquire board revision GPIOs\n");
118                 revision = -1;
119         }
120
121         return revision;
122 }
123
124 #ifdef CONFIG_SPL_BUILD
125 /*
126  * Routine: get_board_mem_timings
127  * Description: If we use SPL then there is no x-loader nor config header
128  * so we have to setup the DDR timings ourself on both banks.
129  */
130 void get_board_mem_timings(struct board_sdrc_timings *timings)
131 {
132         timings->mr = MICRON_V_MR_165;
133         switch (get_board_revision()) {
134         case REVISION_0: /* Micron 1286MB/256MB, 1/2 banks of 128MB */
135                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
136                 timings->ctrla = MICRON_V_ACTIMA_165;
137                 timings->ctrlb = MICRON_V_ACTIMB_165;
138                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
139                 break;
140         case REVISION_1: /* Micron 256MB/512MB, 1/2 banks of 256MB */
141         case REVISION_4:
142                 timings->mcfg = MICRON_V_MCFG_200(256 << 20);
143                 timings->ctrla = MICRON_V_ACTIMA_200;
144                 timings->ctrlb = MICRON_V_ACTIMB_200;
145                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
146                 break;
147         case REVISION_2: /* Hynix 256MB/512MB, 1/2 banks of 256MB */
148                 timings->mcfg = HYNIX_V_MCFG_200(256 << 20);
149                 timings->ctrla = HYNIX_V_ACTIMA_200;
150                 timings->ctrlb = HYNIX_V_ACTIMB_200;
151                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
152                 break;
153         case REVISION_3: /* Micron 512MB/1024MB, 1/2 banks of 512MB */
154                 timings->mcfg = MCFG(512 << 20, 15);
155                 timings->ctrla = MICRON_V_ACTIMA_200;
156                 timings->ctrlb = MICRON_V_ACTIMB_200;
157                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_200MHz;
158                 break;
159         default:
160                 timings->mcfg = MICRON_V_MCFG_165(128 << 20);
161                 timings->ctrla = MICRON_V_ACTIMA_165;
162                 timings->ctrlb = MICRON_V_ACTIMB_165;
163                 timings->rfr_ctrl = SDP_3430_SDRC_RFR_CTRL_165MHz;
164         }
165 }
166 #endif
167
168 /*
169  * Routine: get_sdio2_config
170  * Description: Return information about the wifi module connection
171  *              Returns 0 if the module connects though a level translator
172  *              Returns 1 if the module connects directly
173  */
174 int get_sdio2_config(void)
175 {
176         int sdio_direct;
177
178         if (!gpio_request(130, "") && !gpio_request(139, "")) {
179
180                 gpio_direction_output(130, 0);
181                 gpio_direction_input(139);
182
183                 sdio_direct = 1;
184                 gpio_set_value(130, 0);
185                 if (gpio_get_value(139) == 0) {
186                         gpio_set_value(130, 1);
187                         if (gpio_get_value(139) == 1)
188                                 sdio_direct = 0;
189                 }
190
191                 gpio_direction_input(130);
192         } else {
193                 puts("Error: unable to acquire sdio2 clk GPIOs\n");
194                 sdio_direct = -1;
195         }
196
197         return sdio_direct;
198 }
199
200 /*
201  * Routine: get_expansion_id
202  * Description: This function checks for expansion board by checking I2C
203  *              bus 2 for the availability of an AT24C01B serial EEPROM.
204  *              returns the device_vendor field from the EEPROM
205  */
206 unsigned int get_expansion_id(void)
207 {
208         if (expansion_config.device_vendor != 0x0)
209                 return expansion_config.device_vendor;
210
211         i2c_set_bus_num(EXPANSION_EEPROM_I2C_BUS);
212
213         /* return GUMSTIX_NO_EEPROM if eeprom doesn't respond */
214         if (i2c_probe(EXPANSION_EEPROM_I2C_ADDRESS) == 1) {
215                 i2c_set_bus_num(TWL4030_I2C_BUS);
216                 return GUMSTIX_NO_EEPROM;
217         }
218
219         /* read configuration data */
220         i2c_read(EXPANSION_EEPROM_I2C_ADDRESS, 0, 1, (u8 *)&expansion_config,
221                  sizeof(expansion_config));
222
223         i2c_set_bus_num(TWL4030_I2C_BUS);
224
225         return expansion_config.device_vendor;
226 }
227
228 /*
229  * Routine: misc_init_r
230  * Description: Configure board specific parts
231  */
232 int misc_init_r(void)
233 {
234         unsigned int expansion_id;
235
236         twl4030_power_init();
237         twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
238
239         printf("Board revision: %d\n", get_board_revision());
240
241         switch (get_sdio2_config()) {
242         case 0:
243                 puts("Tranceiver detected on mmc2\n");
244                 MUX_OVERO_SDIO2_TRANSCEIVER();
245                 break;
246         case 1:
247                 puts("Direct connection on mmc2\n");
248                 MUX_OVERO_SDIO2_DIRECT();
249                 break;
250         default:
251                 puts("Unable to detect mmc2 connection type\n");
252         }
253
254         expansion_id = get_expansion_id();
255         switch (expansion_id) {
256         case GUMSTIX_SUMMIT:
257                 printf("Recognized Summit expansion board (rev %d %s)\n",
258                         expansion_config.revision,
259                         expansion_config.fab_revision);
260                 MUX_GUMSTIX();
261                 setenv("defaultdisplay", "dvi");
262                 setenv("expansionname", "summit");
263                 break;
264         case GUMSTIX_TOBI:
265                 printf("Recognized Tobi expansion board (rev %d %s)\n",
266                         expansion_config.revision,
267                         expansion_config.fab_revision);
268                 MUX_GUMSTIX();
269                 setenv("defaultdisplay", "dvi");
270                 setenv("expansionname", "tobi");
271                 break;
272         case GUMSTIX_TOBI_DUO:
273                 printf("Recognized Tobi Duo expansion board (rev %d %s)\n",
274                         expansion_config.revision,
275                         expansion_config.fab_revision);
276                 MUX_GUMSTIX();
277                 break;
278         case GUMSTIX_PALO35:
279                 printf("Recognized Palo35 expansion board (rev %d %s)\n",
280                         expansion_config.revision,
281                         expansion_config.fab_revision);
282                 MUX_GUMSTIX();
283                 setenv("defaultdisplay", "lcd35");
284                 break;
285         case GUMSTIX_PALO43:
286                 printf("Recognized Palo43 expansion board (rev %d %s)\n",
287                         expansion_config.revision,
288                         expansion_config.fab_revision);
289                 MUX_GUMSTIX();
290                 setenv("defaultdisplay", "lcd43");
291                 setenv("expansionname", "palo43");
292                 break;
293         case GUMSTIX_CHESTNUT43:
294                 printf("Recognized Chestnut43 expansion board (rev %d %s)\n",
295                         expansion_config.revision,
296                         expansion_config.fab_revision);
297                 MUX_GUMSTIX();
298                 setenv("defaultdisplay", "lcd43");
299                 setenv("expansionname", "chestnut43");
300                 break;
301         case GUMSTIX_PINTO:
302                 printf("Recognized Pinto expansion board (rev %d %s)\n",
303                         expansion_config.revision,
304                         expansion_config.fab_revision);
305                 MUX_GUMSTIX();
306                 break;
307         case GUMSTIX_GALLOP43:
308                 printf("Recognized Gallop43 expansion board (rev %d %s)\n",
309                         expansion_config.revision,
310                         expansion_config.fab_revision);
311                 MUX_GUMSTIX();
312                 setenv("defaultdisplay", "lcd43");
313                 setenv("expansionname", "gallop43");
314                 break;
315         case GUMSTIX_ALTO35:
316                 printf("Recognized Alto35 expansion board (rev %d %s)\n",
317                         expansion_config.revision,
318                         expansion_config.fab_revision);
319                 MUX_GUMSTIX();
320                 MUX_ALTO35();
321                 setenv("defaultdisplay", "lcd35");
322                 setenv("expansionname", "alto35");
323                 break;
324         case GUMSTIX_STAGECOACH:
325                 printf("Recognized Stagecoach expansion board (rev %d %s)\n",
326                         expansion_config.revision,
327                         expansion_config.fab_revision);
328                 MUX_GUMSTIX();
329                 break;
330         case GUMSTIX_THUMBO:
331                 printf("Recognized Thumbo expansion board (rev %d %s)\n",
332                         expansion_config.revision,
333                         expansion_config.fab_revision);
334                 MUX_GUMSTIX();
335                 break;
336         case GUMSTIX_TURTLECORE:
337                 printf("Recognized Turtlecore expansion board (rev %d %s)\n",
338                         expansion_config.revision,
339                         expansion_config.fab_revision);
340                 MUX_GUMSTIX();
341                 break;
342         case GUMSTIX_ARBOR43C:
343                 printf("Recognized Arbor43C expansion board (rev %d %s)\n",
344                         expansion_config.revision,
345                         expansion_config.fab_revision);
346                 MUX_GUMSTIX();
347                 MUX_ARBOR43C();
348                 setenv("defaultdisplay", "lcd43");
349                 break;
350         case ETTUS_USRP_E:
351                 printf("Recognized Ettus Research USRP-E (rev %d %s)\n",
352                         expansion_config.revision,
353                         expansion_config.fab_revision);
354                 MUX_GUMSTIX();
355                 MUX_USRP_E();
356                 setenv("defaultdisplay", "dvi");
357                 break;
358         case GUMSTIX_NO_EEPROM:
359         case GUMSTIX_EMPTY_EEPROM:
360                 puts("No or empty EEPROM on expansion board\n");
361                 MUX_GUMSTIX();
362                 setenv("expansionname", "tobi");
363                 break;
364         default:
365                 printf("Unrecognized expansion board 0x%08x\n", expansion_id);
366                 break;
367         }
368
369         if (expansion_config.content == 1)
370                 setenv(expansion_config.env_var, expansion_config.env_setting);
371
372         dieid_num_r();
373
374         if (get_cpu_family() == CPU_OMAP34XX)
375                 setenv("boardname", "overo");
376         else
377                 setenv("boardname", "overo-storm");
378
379         return 0;
380 }
381
382 /*
383  * Routine: set_muxconf_regs
384  * Description: Setting up the configuration Mux registers specific to the
385  *              hardware. Many pins need to be moved from protect to primary
386  *              mode.
387  */
388 void set_muxconf_regs(void)
389 {
390         MUX_OVERO();
391 }
392
393 #if defined(CONFIG_CMD_NET) && !defined(CONFIG_SPL_BUILD)
394 /* GPMC definitions for LAN9221 chips on Tobi expansion boards */
395 static const u32 gpmc_lan_config[] = {
396         NET_LAN9221_GPMC_CONFIG1,
397         NET_LAN9221_GPMC_CONFIG2,
398         NET_LAN9221_GPMC_CONFIG3,
399         NET_LAN9221_GPMC_CONFIG4,
400         NET_LAN9221_GPMC_CONFIG5,
401         NET_LAN9221_GPMC_CONFIG6,
402         /*CONFIG7- computed as params */
403 };
404
405 /*
406  * Routine: setup_net_chip
407  * Description: Setting up the configuration GPMC registers specific to the
408  *            Ethernet hardware.
409  */
410 static void setup_net_chip(void)
411 {
412         struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
413
414         /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
415         writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base->gpmc_nwe);
416         /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
417         writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
418         /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
419         writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
420                 &ctrl_base->gpmc_nadv_ale);
421 }
422
423 /*
424  * Routine: reset_net_chip
425  * Description: Reset the Ethernet hardware.
426  */
427 static void reset_net_chip(void)
428 {
429         /* Make GPIO 64 as output pin and send a magic pulse through it */
430         if (!gpio_request(64, "")) {
431                 gpio_direction_output(64, 0);
432                 gpio_set_value(64, 1);
433                 udelay(1);
434                 gpio_set_value(64, 0);
435                 udelay(1);
436                 gpio_set_value(64, 1);
437         }
438 }
439
440 int board_eth_init(bd_t *bis)
441 {
442         unsigned int expansion_id;
443         int rc = 0;
444
445 #ifdef CONFIG_SMC911X
446         expansion_id = get_expansion_id();
447         switch (expansion_id) {
448         case GUMSTIX_TOBI_DUO:
449                 /* second lan chip */
450                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[4],
451                                       0x2B000000, GPMC_SIZE_16M);
452                 /* no break */
453         case GUMSTIX_TOBI:
454         case GUMSTIX_CHESTNUT43:
455         case GUMSTIX_STAGECOACH:
456         case GUMSTIX_NO_EEPROM:
457         case GUMSTIX_EMPTY_EEPROM:
458                 /* first lan chip */
459                 enable_gpmc_cs_config(gpmc_lan_config, &gpmc_cfg->cs[5],
460                                       0x2C000000, GPMC_SIZE_16M);
461
462                 setup_net_chip();
463                 reset_net_chip();
464
465                 rc = smc911x_initialize(0, CONFIG_SMC911X_BASE);
466                 break;
467         default:
468                 break;
469         }
470 #endif
471
472         return rc;
473 }
474 #endif
475
476 #if defined(CONFIG_GENERIC_MMC) && !defined(CONFIG_SPL_BUILD)
477 int board_mmc_init(bd_t *bis)
478 {
479         return omap_mmc_init(0, 0, 0, -1, -1);
480 }
481 #endif
482
483 #if defined(CONFIG_USB_EHCI) &&  !defined(CONFIG_SPL_BUILD)
484 static struct omap_usbhs_board_data usbhs_bdata = {
485         .port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
486         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
487         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
488 };
489
490 #define GUMSTIX_GPIO_USBH_CPEN          168
491 int ehci_hcd_init(int index, enum usb_init_type init,
492                   struct ehci_hccr **hccr, struct ehci_hcor **hcor)
493 {
494         /* Enable USB power */
495         if (!gpio_request(GUMSTIX_GPIO_USBH_CPEN, "usbh_cpen"))
496                 gpio_direction_output(GUMSTIX_GPIO_USBH_CPEN, 1);
497
498         return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
499 }
500
501 int ehci_hcd_stop(void)
502 {
503         /* Disable USB power */
504         gpio_set_value(GUMSTIX_GPIO_USBH_CPEN, 0);
505         gpio_free(GUMSTIX_GPIO_USBH_CPEN);
506
507         return omap_ehci_hcd_stop();
508 }
509
510 #endif /* CONFIG_USB_EHCI */