]>
Commit | Line | Data |
---|---|---|
81a8824f WD |
1 | /* |
2 | * (C) Copyright 2001 | |
3 | * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com. | |
4 | * | |
5 | * See file CREDITS for list of people who contributed to this | |
6 | * project. | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or | |
9 | * modify it under the terms of the GNU General Public License as | |
10 | * published by the Free Software Foundation; either version 2 of | |
11 | * the License, or (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU 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., 59 Temple Place, Suite 330, Boston, | |
21 | * MA 02111-1307 USA | |
22 | */ | |
23 | ||
24 | /* | |
25 | * I2C Functions similar to the standard memory functions. | |
26 | * | |
27 | * There are several parameters in many of the commands that bear further | |
28 | * explanations: | |
29 | * | |
30 | * Two of the commands (imm and imw) take a byte/word/long modifier | |
31 | * (e.g. imm.w specifies the word-length modifier). This was done to | |
32 | * allow manipulating word-length registers. It was not done on any other | |
33 | * commands because it was not deemed useful. | |
34 | * | |
35 | * {i2c_chip} is the I2C chip address (the first byte sent on the bus). | |
36 | * Each I2C chip on the bus has a unique address. On the I2C data bus, | |
37 | * the address is the upper seven bits and the LSB is the "read/write" | |
38 | * bit. Note that the {i2c_chip} address specified on the command | |
39 | * line is not shifted up: e.g. a typical EEPROM memory chip may have | |
40 | * an I2C address of 0x50, but the data put on the bus will be 0xA0 | |
41 | * for write and 0xA1 for read. This "non shifted" address notation | |
42 | * matches at least half of the data sheets :-/. | |
43 | * | |
44 | * {addr} is the address (or offset) within the chip. Small memory | |
45 | * chips have 8 bit addresses. Large memory chips have 16 bit | |
46 | * addresses. Other memory chips have 9, 10, or 11 bit addresses. | |
47 | * Many non-memory chips have multiple registers and {addr} is used | |
48 | * as the register index. Some non-memory chips have only one register | |
49 | * and therefore don't need any {addr} parameter. | |
50 | * | |
51 | * The default {addr} parameter is one byte (.1) which works well for | |
52 | * memories and registers with 8 bits of address space. | |
53 | * | |
54 | * You can specify the length of the {addr} field with the optional .0, | |
55 | * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are | |
56 | * manipulating a single register device which doesn't use an address | |
57 | * field, use "0.0" for the address and the ".0" length field will | |
58 | * suppress the address in the I2C data stream. This also works for | |
59 | * successive reads using the I2C auto-incrementing memory pointer. | |
60 | * | |
61 | * If you are manipulating a large memory with 2-byte addresses, use | |
62 | * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal). | |
63 | * | |
64 | * Then there are the unfortunate memory chips that spill the most | |
65 | * significant 1, 2, or 3 bits of address into the chip address byte. | |
66 | * This effectively makes one chip (logically) look like 2, 4, or | |
67 | * 8 chips. This is handled (awkwardly) by #defining | |
68 | * CFG_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the | |
69 | * {addr} field (since .1 is the default, it doesn't actually have to | |
70 | * be specified). Examples: given a memory chip at I2C chip address | |
71 | * 0x50, the following would happen... | |
72 | * imd 50 0 10 display 16 bytes starting at 0x000 | |
73 | * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd> | |
74 | * imd 50 100 10 display 16 bytes starting at 0x100 | |
75 | * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd> | |
76 | * imd 50 210 10 display 16 bytes starting at 0x210 | |
77 | * On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd> | |
78 | * This is awfully ugly. It would be nice if someone would think up | |
79 | * a better way of handling this. | |
80 | * | |
81 | * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de). | |
82 | */ | |
83 | ||
84 | #include <common.h> | |
85 | #include <command.h> | |
81a8824f WD |
86 | #include <i2c.h> |
87 | #include <asm/byteorder.h> | |
88 | ||
89 | #if (CONFIG_COMMANDS & CFG_CMD_I2C) | |
90 | ||
91 | ||
92 | /* Display values from last command. | |
93 | * Memory modify remembered values are different from display memory. | |
94 | */ | |
95 | static uchar i2c_dp_last_chip; | |
96 | static uint i2c_dp_last_addr; | |
97 | static uint i2c_dp_last_alen; | |
98 | static uint i2c_dp_last_length = 0x10; | |
99 | ||
100 | static uchar i2c_mm_last_chip; | |
101 | static uint i2c_mm_last_addr; | |
102 | static uint i2c_mm_last_alen; | |
103 | ||
bb99ad6d BW |
104 | /* If only one I2C bus is present, the list of devices to ignore when |
105 | * the probe command is issued is represented by a 1D array of addresses. | |
106 | * When multiple buses are present, the list is an array of bus-address | |
107 | * pairs. The following macros take care of this */ | |
108 | ||
81a8824f | 109 | #if defined(CFG_I2C_NOPROBES) |
bb99ad6d BW |
110 | #if defined(CONFIG_I2C_MULTI_BUS) |
111 | static struct | |
112 | { | |
113 | uchar bus; | |
114 | uchar addr; | |
115 | } i2c_no_probes[] = CFG_I2C_NOPROBES; | |
116 | #define GET_BUS_NUM i2c_get_bus_num() | |
117 | #define COMPARE_BUS(b,i) (i2c_no_probes[(i)].bus == (b)) | |
118 | #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)].addr == (a)) | |
119 | #define NO_PROBE_ADDR(i) i2c_no_probes[(i)].addr | |
120 | #else /* single bus */ | |
81a8824f | 121 | static uchar i2c_no_probes[] = CFG_I2C_NOPROBES; |
bb99ad6d BW |
122 | #define GET_BUS_NUM 0 |
123 | #define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */ | |
124 | #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a)) | |
125 | #define NO_PROBE_ADDR(i) i2c_no_probes[(i)] | |
126 | #endif /* CONFIG_MULTI_BUS */ | |
127 | ||
128 | #define NUM_ELEMENTS_NOPROBE (sizeof(i2c_no_probes)/sizeof(i2c_no_probes[0])) | |
81a8824f WD |
129 | #endif |
130 | ||
131 | static int | |
132 | mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]); | |
133 | extern int cmd_get_data_size(char* arg, int default_size); | |
134 | ||
135 | /* | |
136 | * Syntax: | |
137 | * imd {i2c_chip} {addr}{.0, .1, .2} {len} | |
138 | */ | |
139 | #define DISP_LINE_LEN 16 | |
140 | ||
141 | int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
142 | { | |
143 | u_char chip; | |
144 | uint addr, alen, length; | |
145 | int j, nbytes, linebytes; | |
146 | ||
147 | /* We use the last specified parameters, unless new ones are | |
148 | * entered. | |
149 | */ | |
150 | chip = i2c_dp_last_chip; | |
151 | addr = i2c_dp_last_addr; | |
152 | alen = i2c_dp_last_alen; | |
153 | length = i2c_dp_last_length; | |
154 | ||
155 | if (argc < 3) { | |
156 | printf ("Usage:\n%s\n", cmdtp->usage); | |
157 | return 1; | |
158 | } | |
159 | ||
160 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
161 | /* | |
162 | * New command specified. | |
163 | */ | |
164 | alen = 1; | |
165 | ||
166 | /* | |
167 | * I2C chip address | |
168 | */ | |
169 | chip = simple_strtoul(argv[1], NULL, 16); | |
170 | ||
171 | /* | |
172 | * I2C data address within the chip. This can be 1 or | |
173 | * 2 bytes long. Some day it might be 3 bytes long :-). | |
174 | */ | |
175 | addr = simple_strtoul(argv[2], NULL, 16); | |
176 | alen = 1; | |
e857a5bd | 177 | for (j = 0; j < 8; j++) { |
81a8824f WD |
178 | if (argv[2][j] == '.') { |
179 | alen = argv[2][j+1] - '0'; | |
180 | if (alen > 4) { | |
181 | printf ("Usage:\n%s\n", cmdtp->usage); | |
182 | return 1; | |
183 | } | |
184 | break; | |
e857a5bd | 185 | } else if (argv[2][j] == '\0') |
81a8824f | 186 | break; |
81a8824f WD |
187 | } |
188 | ||
189 | /* | |
190 | * If another parameter, it is the length to display. | |
191 | * Length is the number of objects, not number of bytes. | |
192 | */ | |
193 | if (argc > 3) | |
194 | length = simple_strtoul(argv[3], NULL, 16); | |
195 | } | |
196 | ||
197 | /* | |
198 | * Print the lines. | |
199 | * | |
200 | * We buffer all read data, so we can make sure data is read only | |
201 | * once. | |
202 | */ | |
203 | nbytes = length; | |
204 | do { | |
205 | unsigned char linebuf[DISP_LINE_LEN]; | |
206 | unsigned char *cp; | |
207 | ||
208 | linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes; | |
209 | ||
e857a5bd | 210 | if (i2c_read(chip, addr, alen, linebuf, linebytes) != 0) |
4b9206ed | 211 | puts ("Error reading the chip.\n"); |
e857a5bd | 212 | else { |
81a8824f WD |
213 | printf("%04x:", addr); |
214 | cp = linebuf; | |
215 | for (j=0; j<linebytes; j++) { | |
216 | printf(" %02x", *cp++); | |
217 | addr++; | |
218 | } | |
4b9206ed | 219 | puts (" "); |
81a8824f WD |
220 | cp = linebuf; |
221 | for (j=0; j<linebytes; j++) { | |
222 | if ((*cp < 0x20) || (*cp > 0x7e)) | |
4b9206ed | 223 | puts ("."); |
81a8824f WD |
224 | else |
225 | printf("%c", *cp); | |
226 | cp++; | |
227 | } | |
4b9206ed | 228 | putc ('\n'); |
81a8824f WD |
229 | } |
230 | nbytes -= linebytes; | |
231 | } while (nbytes > 0); | |
232 | ||
233 | i2c_dp_last_chip = chip; | |
234 | i2c_dp_last_addr = addr; | |
235 | i2c_dp_last_alen = alen; | |
236 | i2c_dp_last_length = length; | |
237 | ||
238 | return 0; | |
239 | } | |
240 | ||
241 | int do_i2c_mm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
242 | { | |
243 | return mod_i2c_mem (cmdtp, 1, flag, argc, argv); | |
244 | } | |
245 | ||
246 | ||
247 | int do_i2c_nm ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
248 | { | |
249 | return mod_i2c_mem (cmdtp, 0, flag, argc, argv); | |
250 | } | |
251 | ||
252 | /* Write (fill) memory | |
253 | * | |
254 | * Syntax: | |
255 | * imw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}] | |
256 | */ | |
257 | int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
258 | { | |
259 | uchar chip; | |
260 | ulong addr; | |
261 | uint alen; | |
262 | uchar byte; | |
263 | int count; | |
264 | int j; | |
265 | ||
266 | if ((argc < 4) || (argc > 5)) { | |
267 | printf ("Usage:\n%s\n", cmdtp->usage); | |
268 | return 1; | |
269 | } | |
270 | ||
271 | /* | |
272 | * Chip is always specified. | |
273 | */ | |
274 | chip = simple_strtoul(argv[1], NULL, 16); | |
275 | ||
276 | /* | |
277 | * Address is always specified. | |
278 | */ | |
279 | addr = simple_strtoul(argv[2], NULL, 16); | |
280 | alen = 1; | |
e857a5bd | 281 | for (j = 0; j < 8; j++) { |
81a8824f WD |
282 | if (argv[2][j] == '.') { |
283 | alen = argv[2][j+1] - '0'; | |
e857a5bd | 284 | if (alen > 4) { |
81a8824f WD |
285 | printf ("Usage:\n%s\n", cmdtp->usage); |
286 | return 1; | |
287 | } | |
288 | break; | |
e857a5bd | 289 | } else if (argv[2][j] == '\0') |
81a8824f | 290 | break; |
81a8824f WD |
291 | } |
292 | ||
293 | /* | |
294 | * Value to write is always specified. | |
295 | */ | |
296 | byte = simple_strtoul(argv[3], NULL, 16); | |
297 | ||
298 | /* | |
299 | * Optional count | |
300 | */ | |
e857a5bd | 301 | if (argc == 5) |
81a8824f | 302 | count = simple_strtoul(argv[4], NULL, 16); |
e857a5bd | 303 | else |
81a8824f | 304 | count = 1; |
81a8824f WD |
305 | |
306 | while (count-- > 0) { | |
e857a5bd | 307 | if (i2c_write(chip, addr++, alen, &byte, 1) != 0) |
4b9206ed | 308 | puts ("Error writing the chip.\n"); |
81a8824f WD |
309 | /* |
310 | * Wait for the write to complete. The write can take | |
311 | * up to 10mSec (we allow a little more time). | |
312 | * | |
313 | * On some chips, while the write is in progress, the | |
314 | * chip doesn't respond. This apparently isn't a | |
315 | * universal feature so we don't take advantage of it. | |
316 | */ | |
d4f5c728 | 317 | /* |
318 | * No write delay with FRAM devices. | |
319 | */ | |
320 | #if !defined(CFG_I2C_FRAM) | |
81a8824f | 321 | udelay(11000); |
d4f5c728 | 322 | #endif |
323 | ||
81a8824f | 324 | #if 0 |
e857a5bd | 325 | for (timeout = 0; timeout < 10; timeout++) { |
81a8824f | 326 | udelay(2000); |
e857a5bd | 327 | if (i2c_probe(chip) == 0) |
81a8824f WD |
328 | break; |
329 | } | |
330 | #endif | |
331 | } | |
332 | ||
333 | return (0); | |
334 | } | |
335 | ||
336 | ||
337 | /* Calculate a CRC on memory | |
338 | * | |
339 | * Syntax: | |
340 | * icrc32 {i2c_chip} {addr}{.0, .1, .2} {count} | |
341 | */ | |
342 | int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
343 | { | |
344 | uchar chip; | |
345 | ulong addr; | |
346 | uint alen; | |
347 | int count; | |
348 | uchar byte; | |
349 | ulong crc; | |
350 | ulong err; | |
351 | int j; | |
352 | ||
353 | if (argc < 4) { | |
354 | printf ("Usage:\n%s\n", cmdtp->usage); | |
355 | return 1; | |
356 | } | |
357 | ||
358 | /* | |
359 | * Chip is always specified. | |
360 | */ | |
361 | chip = simple_strtoul(argv[1], NULL, 16); | |
362 | ||
363 | /* | |
364 | * Address is always specified. | |
365 | */ | |
366 | addr = simple_strtoul(argv[2], NULL, 16); | |
367 | alen = 1; | |
e857a5bd | 368 | for (j = 0; j < 8; j++) { |
81a8824f WD |
369 | if (argv[2][j] == '.') { |
370 | alen = argv[2][j+1] - '0'; | |
e857a5bd | 371 | if (alen > 4) { |
81a8824f WD |
372 | printf ("Usage:\n%s\n", cmdtp->usage); |
373 | return 1; | |
374 | } | |
375 | break; | |
e857a5bd | 376 | } else if (argv[2][j] == '\0') |
81a8824f | 377 | break; |
81a8824f WD |
378 | } |
379 | ||
380 | /* | |
381 | * Count is always specified | |
382 | */ | |
383 | count = simple_strtoul(argv[3], NULL, 16); | |
384 | ||
385 | printf ("CRC32 for %08lx ... %08lx ==> ", addr, addr + count - 1); | |
386 | /* | |
387 | * CRC a byte at a time. This is going to be slooow, but hey, the | |
388 | * memories are small and slow too so hopefully nobody notices. | |
389 | */ | |
390 | crc = 0; | |
391 | err = 0; | |
e857a5bd TT |
392 | while (count-- > 0) { |
393 | if (i2c_read(chip, addr, alen, &byte, 1) != 0) | |
81a8824f | 394 | err++; |
81a8824f WD |
395 | crc = crc32 (crc, &byte, 1); |
396 | addr++; | |
397 | } | |
e857a5bd | 398 | if (err > 0) |
4b9206ed | 399 | puts ("Error reading the chip,\n"); |
e857a5bd | 400 | else |
81a8824f | 401 | printf ("%08lx\n", crc); |
81a8824f WD |
402 | |
403 | return 0; | |
404 | } | |
405 | ||
406 | ||
407 | /* Modify memory. | |
408 | * | |
409 | * Syntax: | |
410 | * imm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2} | |
411 | * inm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2} | |
412 | */ | |
413 | ||
414 | static int | |
415 | mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]) | |
416 | { | |
417 | uchar chip; | |
418 | ulong addr; | |
419 | uint alen; | |
420 | ulong data; | |
421 | int size = 1; | |
422 | int nbytes; | |
423 | int j; | |
424 | extern char console_buffer[]; | |
425 | ||
426 | if (argc != 3) { | |
427 | printf ("Usage:\n%s\n", cmdtp->usage); | |
428 | return 1; | |
429 | } | |
430 | ||
431 | #ifdef CONFIG_BOOT_RETRY_TIME | |
432 | reset_cmd_timeout(); /* got a good command to get here */ | |
433 | #endif | |
434 | /* | |
435 | * We use the last specified parameters, unless new ones are | |
436 | * entered. | |
437 | */ | |
438 | chip = i2c_mm_last_chip; | |
439 | addr = i2c_mm_last_addr; | |
440 | alen = i2c_mm_last_alen; | |
441 | ||
442 | if ((flag & CMD_FLAG_REPEAT) == 0) { | |
443 | /* | |
444 | * New command specified. Check for a size specification. | |
445 | * Defaults to byte if no or incorrect specification. | |
446 | */ | |
447 | size = cmd_get_data_size(argv[0], 1); | |
448 | ||
449 | /* | |
450 | * Chip is always specified. | |
451 | */ | |
452 | chip = simple_strtoul(argv[1], NULL, 16); | |
453 | ||
454 | /* | |
455 | * Address is always specified. | |
456 | */ | |
457 | addr = simple_strtoul(argv[2], NULL, 16); | |
458 | alen = 1; | |
e857a5bd | 459 | for (j = 0; j < 8; j++) { |
81a8824f WD |
460 | if (argv[2][j] == '.') { |
461 | alen = argv[2][j+1] - '0'; | |
e857a5bd | 462 | if (alen > 4) { |
81a8824f WD |
463 | printf ("Usage:\n%s\n", cmdtp->usage); |
464 | return 1; | |
465 | } | |
466 | break; | |
e857a5bd | 467 | } else if (argv[2][j] == '\0') |
81a8824f | 468 | break; |
81a8824f WD |
469 | } |
470 | } | |
471 | ||
472 | /* | |
473 | * Print the address, followed by value. Then accept input for | |
474 | * the next value. A non-converted value exits. | |
475 | */ | |
476 | do { | |
477 | printf("%08lx:", addr); | |
e857a5bd | 478 | if (i2c_read(chip, addr, alen, (uchar *)&data, size) != 0) |
4b9206ed | 479 | puts ("\nError reading the chip,\n"); |
e857a5bd | 480 | else { |
81a8824f | 481 | data = cpu_to_be32(data); |
e857a5bd | 482 | if (size == 1) |
81a8824f | 483 | printf(" %02lx", (data >> 24) & 0x000000FF); |
e857a5bd | 484 | else if (size == 2) |
81a8824f | 485 | printf(" %04lx", (data >> 16) & 0x0000FFFF); |
e857a5bd | 486 | else |
81a8824f | 487 | printf(" %08lx", data); |
81a8824f WD |
488 | } |
489 | ||
490 | nbytes = readline (" ? "); | |
491 | if (nbytes == 0) { | |
492 | /* | |
493 | * <CR> pressed as only input, don't modify current | |
494 | * location and move to next. | |
495 | */ | |
496 | if (incrflag) | |
497 | addr += size; | |
498 | nbytes = size; | |
499 | #ifdef CONFIG_BOOT_RETRY_TIME | |
500 | reset_cmd_timeout(); /* good enough to not time out */ | |
501 | #endif | |
502 | } | |
503 | #ifdef CONFIG_BOOT_RETRY_TIME | |
e857a5bd | 504 | else if (nbytes == -2) |
81a8824f | 505 | break; /* timed out, exit the command */ |
81a8824f WD |
506 | #endif |
507 | else { | |
508 | char *endp; | |
509 | ||
510 | data = simple_strtoul(console_buffer, &endp, 16); | |
e857a5bd | 511 | if (size == 1) |
81a8824f | 512 | data = data << 24; |
e857a5bd | 513 | else if (size == 2) |
81a8824f | 514 | data = data << 16; |
81a8824f WD |
515 | data = be32_to_cpu(data); |
516 | nbytes = endp - console_buffer; | |
517 | if (nbytes) { | |
518 | #ifdef CONFIG_BOOT_RETRY_TIME | |
519 | /* | |
520 | * good enough to not time out | |
521 | */ | |
522 | reset_cmd_timeout(); | |
523 | #endif | |
e857a5bd | 524 | if (i2c_write(chip, addr, alen, (uchar *)&data, size) != 0) |
4b9206ed | 525 | puts ("Error writing the chip.\n"); |
2535d602 WD |
526 | #ifdef CFG_EEPROM_PAGE_WRITE_DELAY_MS |
527 | udelay(CFG_EEPROM_PAGE_WRITE_DELAY_MS * 1000); | |
528 | #endif | |
81a8824f WD |
529 | if (incrflag) |
530 | addr += size; | |
531 | } | |
532 | } | |
533 | } while (nbytes); | |
534 | ||
535 | chip = i2c_mm_last_chip; | |
536 | addr = i2c_mm_last_addr; | |
537 | alen = i2c_mm_last_alen; | |
538 | ||
539 | return 0; | |
540 | } | |
541 | ||
542 | /* | |
543 | * Syntax: | |
544 | * iprobe {addr}{.0, .1, .2} | |
545 | */ | |
546 | int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
547 | { | |
548 | int j; | |
549 | #if defined(CFG_I2C_NOPROBES) | |
550 | int k, skip; | |
bb99ad6d BW |
551 | uchar bus = GET_BUS_NUM; |
552 | #endif /* NOPROBES */ | |
81a8824f | 553 | |
4b9206ed | 554 | puts ("Valid chip addresses:"); |
e857a5bd | 555 | for (j = 0; j < 128; j++) { |
81a8824f WD |
556 | #if defined(CFG_I2C_NOPROBES) |
557 | skip = 0; | |
e857a5bd TT |
558 | for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) { |
559 | if (COMPARE_BUS(bus, k) && COMPARE_ADDR(j, k)) { | |
81a8824f WD |
560 | skip = 1; |
561 | break; | |
562 | } | |
563 | } | |
564 | if (skip) | |
565 | continue; | |
566 | #endif | |
e857a5bd | 567 | if (i2c_probe(j) == 0) |
81a8824f | 568 | printf(" %02X", j); |
81a8824f | 569 | } |
4b9206ed | 570 | putc ('\n'); |
81a8824f WD |
571 | |
572 | #if defined(CFG_I2C_NOPROBES) | |
573 | puts ("Excluded chip addresses:"); | |
e857a5bd TT |
574 | for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) { |
575 | if (COMPARE_BUS(bus,k)) | |
bb99ad6d BW |
576 | printf(" %02X", NO_PROBE_ADDR(k)); |
577 | } | |
4b9206ed | 578 | putc ('\n'); |
81a8824f WD |
579 | #endif |
580 | ||
581 | return 0; | |
582 | } | |
583 | ||
584 | ||
585 | /* | |
586 | * Syntax: | |
587 | * iloop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}] | |
588 | * {length} - Number of bytes to read | |
589 | * {delay} - A DECIMAL number and defaults to 1000 uSec | |
590 | */ | |
591 | int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
592 | { | |
593 | u_char chip; | |
594 | ulong alen; | |
595 | uint addr; | |
596 | uint length; | |
597 | u_char bytes[16]; | |
598 | int delay; | |
599 | int j; | |
600 | ||
601 | if (argc < 3) { | |
602 | printf ("Usage:\n%s\n", cmdtp->usage); | |
603 | return 1; | |
604 | } | |
605 | ||
606 | /* | |
607 | * Chip is always specified. | |
608 | */ | |
609 | chip = simple_strtoul(argv[1], NULL, 16); | |
610 | ||
611 | /* | |
612 | * Address is always specified. | |
613 | */ | |
614 | addr = simple_strtoul(argv[2], NULL, 16); | |
615 | alen = 1; | |
e857a5bd | 616 | for (j = 0; j < 8; j++) { |
81a8824f WD |
617 | if (argv[2][j] == '.') { |
618 | alen = argv[2][j+1] - '0'; | |
619 | if (alen > 4) { | |
620 | printf ("Usage:\n%s\n", cmdtp->usage); | |
621 | return 1; | |
622 | } | |
623 | break; | |
e857a5bd | 624 | } else if (argv[2][j] == '\0') |
81a8824f | 625 | break; |
81a8824f WD |
626 | } |
627 | ||
628 | /* | |
629 | * Length is the number of objects, not number of bytes. | |
630 | */ | |
631 | length = 1; | |
632 | length = simple_strtoul(argv[3], NULL, 16); | |
e857a5bd | 633 | if (length > sizeof(bytes)) |
81a8824f | 634 | length = sizeof(bytes); |
81a8824f WD |
635 | |
636 | /* | |
637 | * The delay time (uSec) is optional. | |
638 | */ | |
639 | delay = 1000; | |
e857a5bd | 640 | if (argc > 3) |
81a8824f | 641 | delay = simple_strtoul(argv[4], NULL, 10); |
81a8824f WD |
642 | /* |
643 | * Run the loop... | |
644 | */ | |
e857a5bd TT |
645 | while (1) { |
646 | if (i2c_read(chip, addr, alen, bytes, length) != 0) | |
4b9206ed | 647 | puts ("Error reading the chip.\n"); |
81a8824f WD |
648 | udelay(delay); |
649 | } | |
650 | ||
651 | /* NOTREACHED */ | |
652 | return 0; | |
653 | } | |
654 | ||
655 | ||
656 | /* | |
657 | * The SDRAM command is separately configured because many | |
658 | * (most?) embedded boards don't use SDRAM DIMMs. | |
659 | */ | |
660 | #if (CONFIG_COMMANDS & CFG_CMD_SDRAM) | |
661 | ||
662 | /* | |
663 | * Syntax: | |
664 | * sdram {i2c_chip} | |
665 | */ | |
666 | int do_sdram ( cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
667 | { | |
668 | u_char chip; | |
669 | u_char data[128]; | |
670 | u_char cksum; | |
671 | int j; | |
672 | ||
673 | if (argc < 2) { | |
674 | printf ("Usage:\n%s\n", cmdtp->usage); | |
675 | return 1; | |
676 | } | |
677 | /* | |
678 | * Chip is always specified. | |
679 | */ | |
680 | chip = simple_strtoul(argv[1], NULL, 16); | |
681 | ||
e857a5bd | 682 | if (i2c_read(chip, 0, 1, data, sizeof(data)) != 0) { |
4b9206ed | 683 | puts ("No SDRAM Serial Presence Detect found.\n"); |
81a8824f WD |
684 | return 1; |
685 | } | |
686 | ||
687 | cksum = 0; | |
688 | for (j = 0; j < 63; j++) { | |
689 | cksum += data[j]; | |
690 | } | |
e857a5bd | 691 | if (cksum != data[63]) { |
81a8824f WD |
692 | printf ("WARNING: Configuration data checksum failure:\n" |
693 | " is 0x%02x, calculated 0x%02x\n", | |
694 | data[63], cksum); | |
695 | } | |
696 | printf("SPD data revision %d.%d\n", | |
697 | (data[62] >> 4) & 0x0F, data[62] & 0x0F); | |
698 | printf("Bytes used 0x%02X\n", data[0]); | |
699 | printf("Serial memory size 0x%02X\n", 1 << data[1]); | |
4b9206ed | 700 | puts ("Memory type "); |
81a8824f | 701 | switch(data[2]) { |
4b9206ed WD |
702 | case 2: puts ("EDO\n"); break; |
703 | case 4: puts ("SDRAM\n"); break; | |
704 | default: puts ("unknown\n"); break; | |
81a8824f | 705 | } |
4b9206ed | 706 | puts ("Row address bits "); |
e857a5bd | 707 | if ((data[3] & 0x00F0) == 0) |
81a8824f | 708 | printf("%d\n", data[3] & 0x0F); |
e857a5bd | 709 | else |
81a8824f | 710 | printf("%d/%d\n", data[3] & 0x0F, (data[3] >> 4) & 0x0F); |
4b9206ed | 711 | puts ("Column address bits "); |
e857a5bd | 712 | if ((data[4] & 0x00F0) == 0) |
81a8824f | 713 | printf("%d\n", data[4] & 0x0F); |
e857a5bd | 714 | else |
81a8824f | 715 | printf("%d/%d\n", data[4] & 0x0F, (data[4] >> 4) & 0x0F); |
81a8824f WD |
716 | printf("Module rows %d\n", data[5]); |
717 | printf("Module data width %d bits\n", (data[7] << 8) | data[6]); | |
4b9206ed | 718 | puts ("Interface signal levels "); |
81a8824f | 719 | switch(data[8]) { |
4b9206ed WD |
720 | case 0: puts ("5.0v/TTL\n"); break; |
721 | case 1: puts ("LVTTL\n"); break; | |
722 | case 2: puts ("HSTL 1.5\n"); break; | |
723 | case 3: puts ("SSTL 3.3\n"); break; | |
724 | case 4: puts ("SSTL 2.5\n"); break; | |
725 | default: puts ("unknown\n"); break; | |
81a8824f WD |
726 | } |
727 | printf("SDRAM cycle time %d.%d nS\n", | |
728 | (data[9] >> 4) & 0x0F, data[9] & 0x0F); | |
729 | printf("SDRAM access time %d.%d nS\n", | |
730 | (data[10] >> 4) & 0x0F, data[10] & 0x0F); | |
4b9206ed | 731 | puts ("EDC configuration "); |
81a8824f | 732 | switch(data[11]) { |
4b9206ed WD |
733 | case 0: puts ("None\n"); break; |
734 | case 1: puts ("Parity\n"); break; | |
735 | case 2: puts ("ECC\n"); break; | |
736 | default: puts ("unknown\n"); break; | |
81a8824f | 737 | } |
e857a5bd | 738 | if ((data[12] & 0x80) == 0) |
4b9206ed | 739 | puts ("No self refresh, rate "); |
e857a5bd | 740 | else |
4b9206ed | 741 | puts ("Self refresh, rate "); |
81a8824f | 742 | switch(data[12] & 0x7F) { |
4b9206ed WD |
743 | case 0: puts ("15.625uS\n"); break; |
744 | case 1: puts ("3.9uS\n"); break; | |
745 | case 2: puts ("7.8uS\n"); break; | |
746 | case 3: puts ("31.3uS\n"); break; | |
747 | case 4: puts ("62.5uS\n"); break; | |
748 | case 5: puts ("125uS\n"); break; | |
749 | default: puts ("unknown\n"); break; | |
81a8824f WD |
750 | } |
751 | printf("SDRAM width (primary) %d\n", data[13] & 0x7F); | |
e857a5bd | 752 | if ((data[13] & 0x80) != 0) { |
81a8824f WD |
753 | printf(" (second bank) %d\n", |
754 | 2 * (data[13] & 0x7F)); | |
755 | } | |
e857a5bd | 756 | if (data[14] != 0) { |
81a8824f WD |
757 | printf("EDC width %d\n", |
758 | data[14] & 0x7F); | |
e857a5bd | 759 | if ((data[14] & 0x80) != 0) |
81a8824f WD |
760 | printf(" (second bank) %d\n", |
761 | 2 * (data[14] & 0x7F)); | |
81a8824f WD |
762 | } |
763 | printf("Min clock delay, back-to-back random column addresses %d\n", | |
764 | data[15]); | |
4b9206ed WD |
765 | puts ("Burst length(s) "); |
766 | if (data[16] & 0x80) puts (" Page"); | |
767 | if (data[16] & 0x08) puts (" 8"); | |
768 | if (data[16] & 0x04) puts (" 4"); | |
769 | if (data[16] & 0x02) puts (" 2"); | |
770 | if (data[16] & 0x01) puts (" 1"); | |
771 | putc ('\n'); | |
81a8824f | 772 | printf("Number of banks %d\n", data[17]); |
4b9206ed WD |
773 | puts ("CAS latency(s) "); |
774 | if (data[18] & 0x80) puts (" TBD"); | |
775 | if (data[18] & 0x40) puts (" 7"); | |
776 | if (data[18] & 0x20) puts (" 6"); | |
777 | if (data[18] & 0x10) puts (" 5"); | |
778 | if (data[18] & 0x08) puts (" 4"); | |
779 | if (data[18] & 0x04) puts (" 3"); | |
780 | if (data[18] & 0x02) puts (" 2"); | |
781 | if (data[18] & 0x01) puts (" 1"); | |
782 | putc ('\n'); | |
783 | puts ("CS latency(s) "); | |
784 | if (data[19] & 0x80) puts (" TBD"); | |
785 | if (data[19] & 0x40) puts (" 6"); | |
786 | if (data[19] & 0x20) puts (" 5"); | |
787 | if (data[19] & 0x10) puts (" 4"); | |
788 | if (data[19] & 0x08) puts (" 3"); | |
789 | if (data[19] & 0x04) puts (" 2"); | |
790 | if (data[19] & 0x02) puts (" 1"); | |
791 | if (data[19] & 0x01) puts (" 0"); | |
792 | putc ('\n'); | |
793 | puts ("WE latency(s) "); | |
794 | if (data[20] & 0x80) puts (" TBD"); | |
795 | if (data[20] & 0x40) puts (" 6"); | |
796 | if (data[20] & 0x20) puts (" 5"); | |
797 | if (data[20] & 0x10) puts (" 4"); | |
798 | if (data[20] & 0x08) puts (" 3"); | |
799 | if (data[20] & 0x04) puts (" 2"); | |
800 | if (data[20] & 0x02) puts (" 1"); | |
801 | if (data[20] & 0x01) puts (" 0"); | |
802 | putc ('\n'); | |
803 | puts ("Module attributes:\n"); | |
804 | if (!data[21]) puts (" (none)\n"); | |
805 | if (data[21] & 0x80) puts (" TBD (bit 7)\n"); | |
806 | if (data[21] & 0x40) puts (" Redundant row address\n"); | |
807 | if (data[21] & 0x20) puts (" Differential clock input\n"); | |
808 | if (data[21] & 0x10) puts (" Registerd DQMB inputs\n"); | |
809 | if (data[21] & 0x08) puts (" Buffered DQMB inputs\n"); | |
810 | if (data[21] & 0x04) puts (" On-card PLL\n"); | |
811 | if (data[21] & 0x02) puts (" Registered address/control lines\n"); | |
812 | if (data[21] & 0x01) puts (" Buffered address/control lines\n"); | |
813 | puts ("Device attributes:\n"); | |
814 | if (data[22] & 0x80) puts (" TBD (bit 7)\n"); | |
815 | if (data[22] & 0x40) puts (" TBD (bit 6)\n"); | |
816 | if (data[22] & 0x20) puts (" Upper Vcc tolerance 5%\n"); | |
817 | else puts (" Upper Vcc tolerance 10%\n"); | |
818 | if (data[22] & 0x10) puts (" Lower Vcc tolerance 5%\n"); | |
819 | else puts (" Lower Vcc tolerance 10%\n"); | |
820 | if (data[22] & 0x08) puts (" Supports write1/read burst\n"); | |
821 | if (data[22] & 0x04) puts (" Supports precharge all\n"); | |
822 | if (data[22] & 0x02) puts (" Supports auto precharge\n"); | |
823 | if (data[22] & 0x01) puts (" Supports early RAS# precharge\n"); | |
81a8824f WD |
824 | printf("SDRAM cycle time (2nd highest CAS latency) %d.%d nS\n", |
825 | (data[23] >> 4) & 0x0F, data[23] & 0x0F); | |
826 | printf("SDRAM access from clock (2nd highest CAS latency) %d.%d nS\n", | |
827 | (data[24] >> 4) & 0x0F, data[24] & 0x0F); | |
828 | printf("SDRAM cycle time (3rd highest CAS latency) %d.%d nS\n", | |
829 | (data[25] >> 4) & 0x0F, data[25] & 0x0F); | |
830 | printf("SDRAM access from clock (3rd highest CAS latency) %d.%d nS\n", | |
831 | (data[26] >> 4) & 0x0F, data[26] & 0x0F); | |
832 | printf("Minimum row precharge %d nS\n", data[27]); | |
833 | printf("Row active to row active min %d nS\n", data[28]); | |
834 | printf("RAS to CAS delay min %d nS\n", data[29]); | |
835 | printf("Minimum RAS pulse width %d nS\n", data[30]); | |
4b9206ed WD |
836 | puts ("Density of each row "); |
837 | if (data[31] & 0x80) puts (" 512"); | |
838 | if (data[31] & 0x40) puts (" 256"); | |
839 | if (data[31] & 0x20) puts (" 128"); | |
840 | if (data[31] & 0x10) puts (" 64"); | |
841 | if (data[31] & 0x08) puts (" 32"); | |
842 | if (data[31] & 0x04) puts (" 16"); | |
843 | if (data[31] & 0x02) puts (" 8"); | |
844 | if (data[31] & 0x01) puts (" 4"); | |
845 | puts ("MByte\n"); | |
81a8824f WD |
846 | printf("Command and Address setup %c%d.%d nS\n", |
847 | (data[32] & 0x80) ? '-' : '+', | |
848 | (data[32] >> 4) & 0x07, data[32] & 0x0F); | |
849 | printf("Command and Address hold %c%d.%d nS\n", | |
850 | (data[33] & 0x80) ? '-' : '+', | |
851 | (data[33] >> 4) & 0x07, data[33] & 0x0F); | |
852 | printf("Data signal input setup %c%d.%d nS\n", | |
853 | (data[34] & 0x80) ? '-' : '+', | |
854 | (data[34] >> 4) & 0x07, data[34] & 0x0F); | |
855 | printf("Data signal input hold %c%d.%d nS\n", | |
856 | (data[35] & 0x80) ? '-' : '+', | |
857 | (data[35] >> 4) & 0x07, data[35] & 0x0F); | |
4b9206ed | 858 | puts ("Manufacturer's JEDEC ID "); |
e857a5bd | 859 | for (j = 64; j <= 71; j++) |
81a8824f | 860 | printf("%02X ", data[j]); |
4b9206ed | 861 | putc ('\n'); |
81a8824f | 862 | printf("Manufacturing Location %02X\n", data[72]); |
4b9206ed | 863 | puts ("Manufacturer's Part Number "); |
e857a5bd | 864 | for (j = 73; j <= 90; j++) |
81a8824f | 865 | printf("%02X ", data[j]); |
4b9206ed | 866 | putc ('\n'); |
81a8824f WD |
867 | printf("Revision Code %02X %02X\n", data[91], data[92]); |
868 | printf("Manufacturing Date %02X %02X\n", data[93], data[94]); | |
4b9206ed | 869 | puts ("Assembly Serial Number "); |
e857a5bd | 870 | for (j = 95; j <= 98; j++) |
81a8824f | 871 | printf("%02X ", data[j]); |
4b9206ed | 872 | putc ('\n'); |
81a8824f WD |
873 | printf("Speed rating PC%d\n", |
874 | data[126] == 0x66 ? 66 : data[126]); | |
875 | ||
876 | return 0; | |
877 | } | |
878 | #endif /* CFG_CMD_SDRAM */ | |
879 | ||
bb99ad6d BW |
880 | #if defined(CONFIG_I2C_CMD_TREE) |
881 | #if defined(CONFIG_I2C_MULTI_BUS) | |
882 | int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
883 | { | |
884 | int bus_idx, ret=0; | |
885 | ||
e857a5bd TT |
886 | if (argc == 1) |
887 | /* querying current setting */ | |
bb99ad6d | 888 | printf("Current bus is %d\n", i2c_get_bus_num()); |
e857a5bd | 889 | else { |
bb99ad6d BW |
890 | bus_idx = simple_strtoul(argv[1], NULL, 10); |
891 | printf("Setting bus to %d\n", bus_idx); | |
892 | ret = i2c_set_bus_num(bus_idx); | |
e857a5bd | 893 | if (ret) |
bb99ad6d | 894 | printf("Failure changing bus number (%d)\n", ret); |
bb99ad6d BW |
895 | } |
896 | return ret; | |
897 | } | |
898 | #endif /* CONFIG_I2C_MULTI_BUS */ | |
899 | ||
900 | int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
901 | { | |
902 | int speed, ret=0; | |
903 | ||
e857a5bd TT |
904 | if (argc == 1) |
905 | /* querying current speed */ | |
bb99ad6d | 906 | printf("Current bus speed=%d\n", i2c_get_bus_speed()); |
e857a5bd | 907 | else { |
bb99ad6d BW |
908 | speed = simple_strtoul(argv[1], NULL, 10); |
909 | printf("Setting bus speed to %d Hz\n", speed); | |
910 | ret = i2c_set_bus_speed(speed); | |
e857a5bd | 911 | if (ret) |
bb99ad6d | 912 | printf("Failure changing bus speed (%d)\n", ret); |
bb99ad6d BW |
913 | } |
914 | return ret; | |
915 | } | |
916 | ||
917 | int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
918 | { | |
919 | #if defined(CONFIG_I2C_MULTI_BUS) | |
e857a5bd | 920 | if (!strncmp(argv[1], "de", 2)) |
bb99ad6d | 921 | return do_i2c_bus_num(cmdtp, flag, --argc, ++argv); |
bb99ad6d | 922 | #endif /* CONFIG_I2C_MULTI_BUS */ |
e857a5bd | 923 | if (!strncmp(argv[1], "sp", 2)) |
bb99ad6d | 924 | return do_i2c_bus_speed(cmdtp, flag, --argc, ++argv); |
e857a5bd | 925 | if (!strncmp(argv[1], "md", 2)) |
bb99ad6d | 926 | return do_i2c_md(cmdtp, flag, --argc, ++argv); |
e857a5bd | 927 | if (!strncmp(argv[1], "mm", 2)) |
bb99ad6d | 928 | return do_i2c_mm(cmdtp, flag, --argc, ++argv); |
e857a5bd | 929 | if (!strncmp(argv[1], "mw", 2)) |
bb99ad6d | 930 | return do_i2c_mw(cmdtp, flag, --argc, ++argv); |
e857a5bd | 931 | if (!strncmp(argv[1], "nm", 2)) |
bb99ad6d | 932 | return do_i2c_nm(cmdtp, flag, --argc, ++argv); |
e857a5bd | 933 | if (!strncmp(argv[1], "cr", 2)) |
bb99ad6d | 934 | return do_i2c_crc(cmdtp, flag, --argc, ++argv); |
e857a5bd | 935 | if (!strncmp(argv[1], "pr", 2)) |
bb99ad6d | 936 | return do_i2c_probe(cmdtp, flag, --argc, ++argv); |
e857a5bd | 937 | if (!strncmp(argv[1], "lo", 2)) |
bb99ad6d | 938 | return do_i2c_loop(cmdtp, flag, --argc, ++argv); |
bb99ad6d | 939 | #if (CONFIG_COMMANDS & CFG_CMD_SDRAM) |
e857a5bd | 940 | if (!strncmp(argv[1], "sd", 2)) |
bb99ad6d | 941 | return do_sdram(cmdtp, flag, --argc, ++argv); |
bb99ad6d BW |
942 | #endif /* CFG_CMD_SDRAM */ |
943 | else | |
bb99ad6d | 944 | printf ("Usage:\n%s\n", cmdtp->usage); |
bb99ad6d BW |
945 | return 0; |
946 | } | |
947 | #endif /* CONFIG_I2C_CMD_TREE */ | |
8bde7f77 WD |
948 | |
949 | /***************************************************/ | |
950 | ||
0d498393 WD |
951 | U_BOOT_CMD( |
952 | imd, 4, 1, do_i2c_md, \ | |
8bde7f77 WD |
953 | "imd - i2c memory display\n", \ |
954 | "chip address[.0, .1, .2] [# of objects]\n - i2c memory display\n" \ | |
955 | ); | |
956 | ||
0d498393 WD |
957 | U_BOOT_CMD( |
958 | imm, 3, 1, do_i2c_mm, | |
8bde7f77 WD |
959 | "imm - i2c memory modify (auto-incrementing)\n", |
960 | "chip address[.0, .1, .2]\n" | |
961 | " - memory modify, auto increment address\n" | |
962 | ); | |
0d498393 WD |
963 | U_BOOT_CMD( |
964 | inm, 3, 1, do_i2c_nm, | |
8bde7f77 WD |
965 | "inm - memory modify (constant address)\n", |
966 | "chip address[.0, .1, .2]\n - memory modify, read and keep address\n" | |
967 | ); | |
968 | ||
0d498393 WD |
969 | U_BOOT_CMD( |
970 | imw, 5, 1, do_i2c_mw, | |
8bde7f77 WD |
971 | "imw - memory write (fill)\n", |
972 | "chip address[.0, .1, .2] value [count]\n - memory write (fill)\n" | |
973 | ); | |
974 | ||
0d498393 WD |
975 | U_BOOT_CMD( |
976 | icrc32, 5, 1, do_i2c_crc, | |
8bde7f77 WD |
977 | "icrc32 - checksum calculation\n", |
978 | "chip address[.0, .1, .2] count\n - compute CRC32 checksum\n" | |
979 | ); | |
980 | ||
0d498393 WD |
981 | U_BOOT_CMD( |
982 | iprobe, 1, 1, do_i2c_probe, | |
8bde7f77 WD |
983 | "iprobe - probe to discover valid I2C chip addresses\n", |
984 | "\n -discover valid I2C chip addresses\n" | |
985 | ); | |
986 | ||
987 | /* | |
988 | * Require full name for "iloop" because it is an infinite loop! | |
989 | */ | |
0d498393 WD |
990 | U_BOOT_CMD( |
991 | iloop, 5, 1, do_i2c_loop, | |
8bde7f77 WD |
992 | "iloop - infinite loop on address range\n", |
993 | "chip address[.0, .1, .2] [# of objects]\n" | |
994 | " - loop, reading a set of addresses\n" | |
995 | ); | |
996 | ||
997 | #if (CONFIG_COMMANDS & CFG_CMD_SDRAM) | |
0d498393 WD |
998 | U_BOOT_CMD( |
999 | isdram, 2, 1, do_sdram, | |
8bde7f77 WD |
1000 | "isdram - print SDRAM configuration information\n", |
1001 | "chip\n - print SDRAM configuration information\n" | |
1002 | " (valid chip values 50..57)\n" | |
1003 | ); | |
1004 | #endif | |
bb99ad6d BW |
1005 | |
1006 | #if defined(CONFIG_I2C_CMD_TREE) | |
1007 | U_BOOT_CMD( | |
1008 | i2c, 6, 1, do_i2c, | |
1009 | "i2c - I2C sub-system\n", | |
1010 | #if defined(CONFIG_I2C_MULTI_BUS) | |
1011 | "dev [dev] - show or set current I2C bus\n" | |
1012 | #endif /* CONFIG_I2C_MULTI_BUS */ | |
1013 | "i2c speed [speed] - show or set I2C bus speed\n" | |
1014 | "i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n" | |
1015 | "i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n" | |
1016 | "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n" | |
1017 | "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n" | |
1018 | "i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n" | |
1019 | "i2c probe - show devices on the I2C bus\n" | |
1020 | "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n" | |
1021 | #if (CONFIG_COMMANDS & CFG_CMD_SDRAM) | |
1022 | "i2c sdram chip - print SDRAM configuration information\n" | |
1023 | #endif /* CFG_CMD_SDRAM */ | |
1024 | ); | |
1025 | #endif /* CONFIG_I2C_CMD_TREE */ | |
1026 | ||
81a8824f | 1027 | #endif /* CFG_CMD_I2C */ |