3 * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
5 * See file CREDITS for list of people who contributed to this
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.
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.
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,
25 * I2C Functions similar to the standard memory functions.
27 * There are several parameters in many of the commands that bear further
30 * {i2c_chip} is the I2C chip address (the first byte sent on the bus).
31 * Each I2C chip on the bus has a unique address. On the I2C data bus,
32 * the address is the upper seven bits and the LSB is the "read/write"
33 * bit. Note that the {i2c_chip} address specified on the command
34 * line is not shifted up: e.g. a typical EEPROM memory chip may have
35 * an I2C address of 0x50, but the data put on the bus will be 0xA0
36 * for write and 0xA1 for read. This "non shifted" address notation
37 * matches at least half of the data sheets :-/.
39 * {addr} is the address (or offset) within the chip. Small memory
40 * chips have 8 bit addresses. Large memory chips have 16 bit
41 * addresses. Other memory chips have 9, 10, or 11 bit addresses.
42 * Many non-memory chips have multiple registers and {addr} is used
43 * as the register index. Some non-memory chips have only one register
44 * and therefore don't need any {addr} parameter.
46 * The default {addr} parameter is one byte (.1) which works well for
47 * memories and registers with 8 bits of address space.
49 * You can specify the length of the {addr} field with the optional .0,
50 * .1, or .2 modifier (similar to the .b, .w, .l modifier). If you are
51 * manipulating a single register device which doesn't use an address
52 * field, use "0.0" for the address and the ".0" length field will
53 * suppress the address in the I2C data stream. This also works for
54 * successive reads using the I2C auto-incrementing memory pointer.
56 * If you are manipulating a large memory with 2-byte addresses, use
57 * the .2 address modifier, e.g. 210.2 addresses location 528 (decimal).
59 * Then there are the unfortunate memory chips that spill the most
60 * significant 1, 2, or 3 bits of address into the chip address byte.
61 * This effectively makes one chip (logically) look like 2, 4, or
62 * 8 chips. This is handled (awkwardly) by #defining
63 * CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW and using the .1 modifier on the
64 * {addr} field (since .1 is the default, it doesn't actually have to
65 * be specified). Examples: given a memory chip at I2C chip address
66 * 0x50, the following would happen...
67 * i2c md 50 0 10 display 16 bytes starting at 0x000
68 * On the bus: <S> A0 00 <E> <S> A1 <rd> ... <rd>
69 * i2c md 50 100 10 display 16 bytes starting at 0x100
70 * On the bus: <S> A2 00 <E> <S> A3 <rd> ... <rd>
71 * i2c md 50 210 10 display 16 bytes starting at 0x210
72 * On the bus: <S> A4 10 <E> <S> A5 <rd> ... <rd>
73 * This is awfully ugly. It would be nice if someone would think up
74 * a better way of handling this.
76 * Adapted from cmd_mem.c which is copyright Wolfgang Denk (wd@denx.de).
82 #include <environment.h>
85 #include <asm/byteorder.h>
86 #include <linux/compiler.h>
88 /* Display values from last command.
89 * Memory modify remembered values are different from display memory.
91 static uchar i2c_dp_last_chip
;
92 static uint i2c_dp_last_addr
;
93 static uint i2c_dp_last_alen
;
94 static uint i2c_dp_last_length
= 0x10;
96 static uchar i2c_mm_last_chip
;
97 static uint i2c_mm_last_addr
;
98 static uint i2c_mm_last_alen
;
100 /* If only one I2C bus is present, the list of devices to ignore when
101 * the probe command is issued is represented by a 1D array of addresses.
102 * When multiple buses are present, the list is an array of bus-address
103 * pairs. The following macros take care of this */
105 #if defined(CONFIG_SYS_I2C_NOPROBES)
106 #if defined(CONFIG_I2C_MULTI_BUS)
111 } i2c_no_probes
[] = CONFIG_SYS_I2C_NOPROBES
;
112 #define GET_BUS_NUM i2c_get_bus_num()
113 #define COMPARE_BUS(b,i) (i2c_no_probes[(i)].bus == (b))
114 #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)].addr == (a))
115 #define NO_PROBE_ADDR(i) i2c_no_probes[(i)].addr
116 #else /* single bus */
117 static uchar i2c_no_probes
[] = CONFIG_SYS_I2C_NOPROBES
;
118 #define GET_BUS_NUM 0
119 #define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */
120 #define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a))
121 #define NO_PROBE_ADDR(i) i2c_no_probes[(i)]
122 #endif /* CONFIG_MULTI_BUS */
124 #define NUM_ELEMENTS_NOPROBE (sizeof(i2c_no_probes)/sizeof(i2c_no_probes[0]))
127 #if defined(CONFIG_I2C_MUX)
128 static I2C_MUX_DEVICE
*i2c_mux_devices
= NULL
;
129 static int i2c_mux_busid
= CONFIG_SYS_MAX_I2C_BUS
;
131 DECLARE_GLOBAL_DATA_PTR
;
135 #define DISP_LINE_LEN 16
138 * i2c_init_board() - Board-specific I2C bus init
140 * This function is the default no-op implementation of I2C bus
141 * initialization. This function can be overriden by board-specific
142 * implementation if needed.
145 void i2c_init_board(void)
150 /* TODO: Implement architecture-specific get/set functions */
153 * i2c_get_bus_speed() - Return I2C bus speed
155 * This function is the default implementation of function for retrieveing
156 * the current I2C bus speed in Hz.
158 * A driver implementing runtime switching of I2C bus speed must override
159 * this function to report the speed correctly. Simple or legacy drivers
160 * can use this fallback.
162 * Returns I2C bus speed in Hz.
165 unsigned int i2c_get_bus_speed(void)
167 return CONFIG_SYS_I2C_SPEED
;
171 * i2c_set_bus_speed() - Configure I2C bus speed
172 * @speed: Newly set speed of the I2C bus in Hz
174 * This function is the default implementation of function for setting
175 * the I2C bus speed in Hz.
177 * A driver implementing runtime switching of I2C bus speed must override
178 * this function to report the speed correctly. Simple or legacy drivers
179 * can use this fallback.
181 * Returns zero on success, negative value on error.
184 int i2c_set_bus_speed(unsigned int speed
)
186 if (speed
!= CONFIG_SYS_I2C_SPEED
)
193 * get_alen() - Small parser helper function to get address length
195 * Returns the address length.
197 static uint
get_alen(char *arg
)
203 for (j
= 0; j
< 8; j
++) {
205 alen
= arg
[j
+1] - '0';
207 } else if (arg
[j
] == '\0')
214 * do_i2c_read() - Handle the "i2c read" command-line command
215 * @cmdtp: Command data struct pointer
216 * @flag: Command flag
217 * @argc: Command-line argument count
218 * @argv: Array of command-line arguments
220 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
224 * i2c read {i2c_chip} {devaddr}{.0, .1, .2} {len} {memaddr}
226 static int do_i2c_read ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
229 uint devaddr
, alen
, length
;
233 return CMD_RET_USAGE
;
238 chip
= simple_strtoul(argv
[1], NULL
, 16);
241 * I2C data address within the chip. This can be 1 or
242 * 2 bytes long. Some day it might be 3 bytes long :-).
244 devaddr
= simple_strtoul(argv
[2], NULL
, 16);
245 alen
= get_alen(argv
[2]);
247 return CMD_RET_USAGE
;
250 * Length is the number of objects, not number of bytes.
252 length
= simple_strtoul(argv
[3], NULL
, 16);
255 * memaddr is the address where to store things in memory
257 memaddr
= (u_char
*)simple_strtoul(argv
[4], NULL
, 16);
259 if (i2c_read(chip
, devaddr
, alen
, memaddr
, length
) != 0) {
260 puts ("Error reading the chip.\n");
266 static int do_i2c_write(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
269 uint devaddr
, alen
, length
;
273 return cmd_usage(cmdtp
);
276 * memaddr is the address where to store things in memory
278 memaddr
= (u_char
*)simple_strtoul(argv
[1], NULL
, 16);
283 chip
= simple_strtoul(argv
[2], NULL
, 16);
286 * I2C data address within the chip. This can be 1 or
287 * 2 bytes long. Some day it might be 3 bytes long :-).
289 devaddr
= simple_strtoul(argv
[3], NULL
, 16);
290 alen
= get_alen(argv
[3]);
292 return cmd_usage(cmdtp
);
295 * Length is the number of objects, not number of bytes.
297 length
= simple_strtoul(argv
[4], NULL
, 16);
299 while (length
-- > 0) {
300 if (i2c_write(chip
, devaddr
++, alen
, memaddr
++, 1) != 0) {
301 puts("Error writing to the chip.\n");
305 * No write delay with FRAM devices.
307 #if !defined(CONFIG_SYS_I2C_FRAM)
315 * do_i2c_md() - Handle the "i2c md" command-line command
316 * @cmdtp: Command data struct pointer
317 * @flag: Command flag
318 * @argc: Command-line argument count
319 * @argv: Array of command-line arguments
321 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
325 * i2c md {i2c_chip} {addr}{.0, .1, .2} {len}
327 static int do_i2c_md ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
330 uint addr
, alen
, length
;
331 int j
, nbytes
, linebytes
;
333 /* We use the last specified parameters, unless new ones are
336 chip
= i2c_dp_last_chip
;
337 addr
= i2c_dp_last_addr
;
338 alen
= i2c_dp_last_alen
;
339 length
= i2c_dp_last_length
;
342 return CMD_RET_USAGE
;
344 if ((flag
& CMD_FLAG_REPEAT
) == 0) {
346 * New command specified.
352 chip
= simple_strtoul(argv
[1], NULL
, 16);
355 * I2C data address within the chip. This can be 1 or
356 * 2 bytes long. Some day it might be 3 bytes long :-).
358 addr
= simple_strtoul(argv
[2], NULL
, 16);
359 alen
= get_alen(argv
[2]);
361 return CMD_RET_USAGE
;
364 * If another parameter, it is the length to display.
365 * Length is the number of objects, not number of bytes.
368 length
= simple_strtoul(argv
[3], NULL
, 16);
374 * We buffer all read data, so we can make sure data is read only
379 unsigned char linebuf
[DISP_LINE_LEN
];
382 linebytes
= (nbytes
> DISP_LINE_LEN
) ? DISP_LINE_LEN
: nbytes
;
384 if (i2c_read(chip
, addr
, alen
, linebuf
, linebytes
) != 0)
385 puts ("Error reading the chip.\n");
387 printf("%04x:", addr
);
389 for (j
=0; j
<linebytes
; j
++) {
390 printf(" %02x", *cp
++);
395 for (j
=0; j
<linebytes
; j
++) {
396 if ((*cp
< 0x20) || (*cp
> 0x7e))
405 } while (nbytes
> 0);
407 i2c_dp_last_chip
= chip
;
408 i2c_dp_last_addr
= addr
;
409 i2c_dp_last_alen
= alen
;
410 i2c_dp_last_length
= length
;
416 * do_i2c_mw() - Handle the "i2c mw" command-line command
417 * @cmdtp: Command data struct pointer
418 * @flag: Command flag
419 * @argc: Command-line argument count
420 * @argv: Array of command-line arguments
422 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
426 * i2c mw {i2c_chip} {addr}{.0, .1, .2} {data} [{count}]
428 static int do_i2c_mw ( cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
436 if ((argc
< 4) || (argc
> 5))
437 return CMD_RET_USAGE
;
440 * Chip is always specified.
442 chip
= simple_strtoul(argv
[1], NULL
, 16);
445 * Address is always specified.
447 addr
= simple_strtoul(argv
[2], NULL
, 16);
448 alen
= get_alen(argv
[2]);
450 return CMD_RET_USAGE
;
453 * Value to write is always specified.
455 byte
= simple_strtoul(argv
[3], NULL
, 16);
461 count
= simple_strtoul(argv
[4], NULL
, 16);
465 while (count
-- > 0) {
466 if (i2c_write(chip
, addr
++, alen
, &byte
, 1) != 0)
467 puts ("Error writing the chip.\n");
469 * Wait for the write to complete. The write can take
470 * up to 10mSec (we allow a little more time).
473 * No write delay with FRAM devices.
475 #if !defined(CONFIG_SYS_I2C_FRAM)
484 * do_i2c_crc() - Handle the "i2c crc32" command-line command
485 * @cmdtp: Command data struct pointer
486 * @flag: Command flag
487 * @argc: Command-line argument count
488 * @argv: Array of command-line arguments
490 * Calculate a CRC on memory
492 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
496 * i2c crc32 {i2c_chip} {addr}{.0, .1, .2} {count}
498 static int do_i2c_crc (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
509 return CMD_RET_USAGE
;
512 * Chip is always specified.
514 chip
= simple_strtoul(argv
[1], NULL
, 16);
517 * Address is always specified.
519 addr
= simple_strtoul(argv
[2], NULL
, 16);
520 alen
= get_alen(argv
[2]);
522 return CMD_RET_USAGE
;
525 * Count is always specified
527 count
= simple_strtoul(argv
[3], NULL
, 16);
529 printf ("CRC32 for %08lx ... %08lx ==> ", addr
, addr
+ count
- 1);
531 * CRC a byte at a time. This is going to be slooow, but hey, the
532 * memories are small and slow too so hopefully nobody notices.
536 while (count
-- > 0) {
537 if (i2c_read(chip
, addr
, alen
, &byte
, 1) != 0)
539 crc
= crc32 (crc
, &byte
, 1);
543 puts ("Error reading the chip,\n");
545 printf ("%08lx\n", crc
);
551 * mod_i2c_mem() - Handle the "i2c mm" and "i2c nm" command-line command
552 * @cmdtp: Command data struct pointer
553 * @flag: Command flag
554 * @argc: Command-line argument count
555 * @argv: Array of command-line arguments
559 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
563 * i2c mm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
564 * i2c nm{.b, .w, .l} {i2c_chip} {addr}{.0, .1, .2}
567 mod_i2c_mem(cmd_tbl_t
*cmdtp
, int incrflag
, int flag
, int argc
, char * const argv
[])
577 return CMD_RET_USAGE
;
579 #ifdef CONFIG_BOOT_RETRY_TIME
580 reset_cmd_timeout(); /* got a good command to get here */
583 * We use the last specified parameters, unless new ones are
586 chip
= i2c_mm_last_chip
;
587 addr
= i2c_mm_last_addr
;
588 alen
= i2c_mm_last_alen
;
590 if ((flag
& CMD_FLAG_REPEAT
) == 0) {
592 * New command specified. Check for a size specification.
593 * Defaults to byte if no or incorrect specification.
595 size
= cmd_get_data_size(argv
[0], 1);
598 * Chip is always specified.
600 chip
= simple_strtoul(argv
[1], NULL
, 16);
603 * Address is always specified.
605 addr
= simple_strtoul(argv
[2], NULL
, 16);
606 alen
= get_alen(argv
[2]);
608 return CMD_RET_USAGE
;
612 * Print the address, followed by value. Then accept input for
613 * the next value. A non-converted value exits.
616 printf("%08lx:", addr
);
617 if (i2c_read(chip
, addr
, alen
, (uchar
*)&data
, size
) != 0)
618 puts ("\nError reading the chip,\n");
620 data
= cpu_to_be32(data
);
622 printf(" %02lx", (data
>> 24) & 0x000000FF);
624 printf(" %04lx", (data
>> 16) & 0x0000FFFF);
626 printf(" %08lx", data
);
629 nbytes
= readline (" ? ");
632 * <CR> pressed as only input, don't modify current
633 * location and move to next.
638 #ifdef CONFIG_BOOT_RETRY_TIME
639 reset_cmd_timeout(); /* good enough to not time out */
642 #ifdef CONFIG_BOOT_RETRY_TIME
643 else if (nbytes
== -2)
644 break; /* timed out, exit the command */
649 data
= simple_strtoul(console_buffer
, &endp
, 16);
654 data
= be32_to_cpu(data
);
655 nbytes
= endp
- console_buffer
;
657 #ifdef CONFIG_BOOT_RETRY_TIME
659 * good enough to not time out
663 if (i2c_write(chip
, addr
, alen
, (uchar
*)&data
, size
) != 0)
664 puts ("Error writing the chip.\n");
665 #ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
666 udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
* 1000);
674 i2c_mm_last_chip
= chip
;
675 i2c_mm_last_addr
= addr
;
676 i2c_mm_last_alen
= alen
;
682 * do_i2c_probe() - Handle the "i2c probe" command-line command
683 * @cmdtp: Command data struct pointer
684 * @flag: Command flag
685 * @argc: Command-line argument count
686 * @argv: Array of command-line arguments
688 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
694 * Returns zero (success) if one or more I2C devices was found
696 static int do_i2c_probe (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
701 #if defined(CONFIG_SYS_I2C_NOPROBES)
703 uchar bus
= GET_BUS_NUM
;
704 #endif /* NOPROBES */
707 addr
= simple_strtol(argv
[1], 0, 16);
709 puts ("Valid chip addresses:");
710 for (j
= 0; j
< 128; j
++) {
711 if ((0 <= addr
) && (j
!= addr
))
714 #if defined(CONFIG_SYS_I2C_NOPROBES)
716 for (k
=0; k
< NUM_ELEMENTS_NOPROBE
; k
++) {
717 if (COMPARE_BUS(bus
, k
) && COMPARE_ADDR(j
, k
)) {
725 if (i2c_probe(j
) == 0) {
732 #if defined(CONFIG_SYS_I2C_NOPROBES)
733 puts ("Excluded chip addresses:");
734 for (k
=0; k
< NUM_ELEMENTS_NOPROBE
; k
++) {
735 if (COMPARE_BUS(bus
,k
))
736 printf(" %02X", NO_PROBE_ADDR(k
));
745 * do_i2c_loop() - Handle the "i2c loop" command-line command
746 * @cmdtp: Command data struct pointer
747 * @flag: Command flag
748 * @argc: Command-line argument count
749 * @argv: Array of command-line arguments
751 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
755 * i2c loop {i2c_chip} {addr}{.0, .1, .2} [{length}] [{delay}]
756 * {length} - Number of bytes to read
757 * {delay} - A DECIMAL number and defaults to 1000 uSec
759 static int do_i2c_loop(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
769 return CMD_RET_USAGE
;
772 * Chip is always specified.
774 chip
= simple_strtoul(argv
[1], NULL
, 16);
777 * Address is always specified.
779 addr
= simple_strtoul(argv
[2], NULL
, 16);
780 alen
= get_alen(argv
[2]);
782 return CMD_RET_USAGE
;
785 * Length is the number of objects, not number of bytes.
788 length
= simple_strtoul(argv
[3], NULL
, 16);
789 if (length
> sizeof(bytes
))
790 length
= sizeof(bytes
);
793 * The delay time (uSec) is optional.
797 delay
= simple_strtoul(argv
[4], NULL
, 10);
802 if (i2c_read(chip
, addr
, alen
, bytes
, length
) != 0)
803 puts ("Error reading the chip.\n");
812 * The SDRAM command is separately configured because many
813 * (most?) embedded boards don't use SDRAM DIMMs.
815 * FIXME: Document and probably move elsewhere!
817 #if defined(CONFIG_CMD_SDRAM)
818 static void print_ddr2_tcyc (u_char
const b
)
820 printf ("%d.", (b
>> 4) & 0x0F);
832 printf ("%d ns\n", b
& 0x0F);
852 static void decode_bits (u_char
const b
, char const *str
[], int const do_once
)
856 for (mask
= 0x80; mask
!= 0x00; mask
>>= 1, ++str
) {
867 * i2c sdram {i2c_chip}
869 static int do_sdram (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
871 enum { unknown
, EDO
, SDRAM
, DDR2
} type
;
878 static const char *decode_CAS_DDR2
[] = {
879 " TBD", " 6", " 5", " 4", " 3", " 2", " TBD", " TBD"
882 static const char *decode_CAS_default
[] = {
883 " TBD", " 7", " 6", " 5", " 4", " 3", " 2", " 1"
886 static const char *decode_CS_WE_default
[] = {
887 " TBD", " 6", " 5", " 4", " 3", " 2", " 1", " 0"
890 static const char *decode_byte21_default
[] = {
892 " Redundant row address\n",
893 " Differential clock input\n",
894 " Registerd DQMB inputs\n",
895 " Buffered DQMB inputs\n",
897 " Registered address/control lines\n",
898 " Buffered address/control lines\n"
901 static const char *decode_byte22_DDR2
[] = {
907 " Supports partial array self refresh\n",
908 " Supports 50 ohm ODT\n",
909 " Supports weak driver\n"
912 static const char *decode_row_density_DDR2
[] = {
913 "512 MiB", "256 MiB", "128 MiB", "16 GiB",
914 "8 GiB", "4 GiB", "2 GiB", "1 GiB"
917 static const char *decode_row_density_default
[] = {
918 "512 MiB", "256 MiB", "128 MiB", "64 MiB",
919 "32 MiB", "16 MiB", "8 MiB", "4 MiB"
923 return CMD_RET_USAGE
;
926 * Chip is always specified.
928 chip
= simple_strtoul (argv
[1], NULL
, 16);
930 if (i2c_read (chip
, 0, 1, data
, sizeof (data
)) != 0) {
931 puts ("No SDRAM Serial Presence Detect found.\n");
936 for (j
= 0; j
< 63; j
++) {
939 if (cksum
!= data
[63]) {
940 printf ("WARNING: Configuration data checksum failure:\n"
941 " is 0x%02x, calculated 0x%02x\n", data
[63], cksum
);
943 printf ("SPD data revision %d.%d\n",
944 (data
[62] >> 4) & 0x0F, data
[62] & 0x0F);
945 printf ("Bytes used 0x%02X\n", data
[0]);
946 printf ("Serial memory size 0x%02X\n", 1 << data
[1]);
948 puts ("Memory type ");
968 puts ("Row address bits ");
969 if ((data
[3] & 0x00F0) == 0)
970 printf ("%d\n", data
[3] & 0x0F);
972 printf ("%d/%d\n", data
[3] & 0x0F, (data
[3] >> 4) & 0x0F);
974 puts ("Column address bits ");
975 if ((data
[4] & 0x00F0) == 0)
976 printf ("%d\n", data
[4] & 0x0F);
978 printf ("%d/%d\n", data
[4] & 0x0F, (data
[4] >> 4) & 0x0F);
982 printf ("Number of ranks %d\n",
983 (data
[5] & 0x07) + 1);
986 printf ("Module rows %d\n", data
[5]);
992 printf ("Module data width %d bits\n", data
[6]);
995 printf ("Module data width %d bits\n",
996 (data
[7] << 8) | data
[6]);
1000 puts ("Interface signal levels ");
1002 case 0: puts ("TTL 5.0 V\n"); break;
1003 case 1: puts ("LVTTL\n"); break;
1004 case 2: puts ("HSTL 1.5 V\n"); break;
1005 case 3: puts ("SSTL 3.3 V\n"); break;
1006 case 4: puts ("SSTL 2.5 V\n"); break;
1007 case 5: puts ("SSTL 1.8 V\n"); break;
1008 default: puts ("unknown\n"); break;
1013 printf ("SDRAM cycle time ");
1014 print_ddr2_tcyc (data
[9]);
1017 printf ("SDRAM cycle time %d.%d ns\n",
1018 (data
[9] >> 4) & 0x0F, data
[9] & 0x0F);
1024 printf ("SDRAM access time 0.%d%d ns\n",
1025 (data
[10] >> 4) & 0x0F, data
[10] & 0x0F);
1028 printf ("SDRAM access time %d.%d ns\n",
1029 (data
[10] >> 4) & 0x0F, data
[10] & 0x0F);
1033 puts ("EDC configuration ");
1035 case 0: puts ("None\n"); break;
1036 case 1: puts ("Parity\n"); break;
1037 case 2: puts ("ECC\n"); break;
1038 default: puts ("unknown\n"); break;
1041 if ((data
[12] & 0x80) == 0)
1042 puts ("No self refresh, rate ");
1044 puts ("Self refresh, rate ");
1046 switch(data
[12] & 0x7F) {
1047 case 0: puts ("15.625 us\n"); break;
1048 case 1: puts ("3.9 us\n"); break;
1049 case 2: puts ("7.8 us\n"); break;
1050 case 3: puts ("31.3 us\n"); break;
1051 case 4: puts ("62.5 us\n"); break;
1052 case 5: puts ("125 us\n"); break;
1053 default: puts ("unknown\n"); break;
1058 printf ("SDRAM width (primary) %d\n", data
[13]);
1061 printf ("SDRAM width (primary) %d\n", data
[13] & 0x7F);
1062 if ((data
[13] & 0x80) != 0) {
1063 printf (" (second bank) %d\n",
1064 2 * (data
[13] & 0x7F));
1072 printf ("EDC width %d\n", data
[14]);
1075 if (data
[14] != 0) {
1076 printf ("EDC width %d\n",
1079 if ((data
[14] & 0x80) != 0) {
1080 printf (" (second bank) %d\n",
1081 2 * (data
[14] & 0x7F));
1088 printf ("Min clock delay, back-to-back random column addresses "
1092 puts ("Burst length(s) ");
1093 if (data
[16] & 0x80) puts (" Page");
1094 if (data
[16] & 0x08) puts (" 8");
1095 if (data
[16] & 0x04) puts (" 4");
1096 if (data
[16] & 0x02) puts (" 2");
1097 if (data
[16] & 0x01) puts (" 1");
1099 printf ("Number of banks %d\n", data
[17]);
1103 puts ("CAS latency(s) ");
1104 decode_bits (data
[18], decode_CAS_DDR2
, 0);
1108 puts ("CAS latency(s) ");
1109 decode_bits (data
[18], decode_CAS_default
, 0);
1115 puts ("CS latency(s) ");
1116 decode_bits (data
[19], decode_CS_WE_default
, 0);
1121 puts ("WE latency(s) ");
1122 decode_bits (data
[20], decode_CS_WE_default
, 0);
1128 puts ("Module attributes:\n");
1129 if (data
[21] & 0x80)
1130 puts (" TBD (bit 7)\n");
1131 if (data
[21] & 0x40)
1132 puts (" Analysis probe installed\n");
1133 if (data
[21] & 0x20)
1134 puts (" TBD (bit 5)\n");
1135 if (data
[21] & 0x10)
1136 puts (" FET switch external enable\n");
1137 printf (" %d PLLs on DIMM\n", (data
[21] >> 2) & 0x03);
1138 if (data
[20] & 0x11) {
1139 printf (" %d active registers on DIMM\n",
1140 (data
[21] & 0x03) + 1);
1144 puts ("Module attributes:\n");
1148 decode_bits (data
[21], decode_byte21_default
, 0);
1154 decode_bits (data
[22], decode_byte22_DDR2
, 0);
1157 puts ("Device attributes:\n");
1158 if (data
[22] & 0x80) puts (" TBD (bit 7)\n");
1159 if (data
[22] & 0x40) puts (" TBD (bit 6)\n");
1160 if (data
[22] & 0x20) puts (" Upper Vcc tolerance 5%\n");
1161 else puts (" Upper Vcc tolerance 10%\n");
1162 if (data
[22] & 0x10) puts (" Lower Vcc tolerance 5%\n");
1163 else puts (" Lower Vcc tolerance 10%\n");
1164 if (data
[22] & 0x08) puts (" Supports write1/read burst\n");
1165 if (data
[22] & 0x04) puts (" Supports precharge all\n");
1166 if (data
[22] & 0x02) puts (" Supports auto precharge\n");
1167 if (data
[22] & 0x01) puts (" Supports early RAS# precharge\n");
1173 printf ("SDRAM cycle time (2nd highest CAS latency) ");
1174 print_ddr2_tcyc (data
[23]);
1177 printf ("SDRAM cycle time (2nd highest CAS latency) %d."
1178 "%d ns\n", (data
[23] >> 4) & 0x0F, data
[23] & 0x0F);
1184 printf ("SDRAM access from clock (2nd highest CAS latency) 0."
1185 "%d%d ns\n", (data
[24] >> 4) & 0x0F, data
[24] & 0x0F);
1188 printf ("SDRAM access from clock (2nd highest CAS latency) %d."
1189 "%d ns\n", (data
[24] >> 4) & 0x0F, data
[24] & 0x0F);
1195 printf ("SDRAM cycle time (3rd highest CAS latency) ");
1196 print_ddr2_tcyc (data
[25]);
1199 printf ("SDRAM cycle time (3rd highest CAS latency) %d."
1200 "%d ns\n", (data
[25] >> 4) & 0x0F, data
[25] & 0x0F);
1206 printf ("SDRAM access from clock (3rd highest CAS latency) 0."
1207 "%d%d ns\n", (data
[26] >> 4) & 0x0F, data
[26] & 0x0F);
1210 printf ("SDRAM access from clock (3rd highest CAS latency) %d."
1211 "%d ns\n", (data
[26] >> 4) & 0x0F, data
[26] & 0x0F);
1217 printf ("Minimum row precharge %d.%02d ns\n",
1218 (data
[27] >> 2) & 0x3F, 25 * (data
[27] & 0x03));
1221 printf ("Minimum row precharge %d ns\n", data
[27]);
1227 printf ("Row active to row active min %d.%02d ns\n",
1228 (data
[28] >> 2) & 0x3F, 25 * (data
[28] & 0x03));
1231 printf ("Row active to row active min %d ns\n", data
[28]);
1237 printf ("RAS to CAS delay min %d.%02d ns\n",
1238 (data
[29] >> 2) & 0x3F, 25 * (data
[29] & 0x03));
1241 printf ("RAS to CAS delay min %d ns\n", data
[29]);
1245 printf ("Minimum RAS pulse width %d ns\n", data
[30]);
1249 puts ("Density of each row ");
1250 decode_bits (data
[31], decode_row_density_DDR2
, 1);
1254 puts ("Density of each row ");
1255 decode_bits (data
[31], decode_row_density_default
, 1);
1262 puts ("Command and Address setup ");
1263 if (data
[32] >= 0xA0) {
1264 printf ("1.%d%d ns\n",
1265 ((data
[32] >> 4) & 0x0F) - 10, data
[32] & 0x0F);
1267 printf ("0.%d%d ns\n",
1268 ((data
[32] >> 4) & 0x0F), data
[32] & 0x0F);
1272 printf ("Command and Address setup %c%d.%d ns\n",
1273 (data
[32] & 0x80) ? '-' : '+',
1274 (data
[32] >> 4) & 0x07, data
[32] & 0x0F);
1280 puts ("Command and Address hold ");
1281 if (data
[33] >= 0xA0) {
1282 printf ("1.%d%d ns\n",
1283 ((data
[33] >> 4) & 0x0F) - 10, data
[33] & 0x0F);
1285 printf ("0.%d%d ns\n",
1286 ((data
[33] >> 4) & 0x0F), data
[33] & 0x0F);
1290 printf ("Command and Address hold %c%d.%d ns\n",
1291 (data
[33] & 0x80) ? '-' : '+',
1292 (data
[33] >> 4) & 0x07, data
[33] & 0x0F);
1298 printf ("Data signal input setup 0.%d%d ns\n",
1299 (data
[34] >> 4) & 0x0F, data
[34] & 0x0F);
1302 printf ("Data signal input setup %c%d.%d ns\n",
1303 (data
[34] & 0x80) ? '-' : '+',
1304 (data
[34] >> 4) & 0x07, data
[34] & 0x0F);
1310 printf ("Data signal input hold 0.%d%d ns\n",
1311 (data
[35] >> 4) & 0x0F, data
[35] & 0x0F);
1314 printf ("Data signal input hold %c%d.%d ns\n",
1315 (data
[35] & 0x80) ? '-' : '+',
1316 (data
[35] >> 4) & 0x07, data
[35] & 0x0F);
1320 puts ("Manufacturer's JEDEC ID ");
1321 for (j
= 64; j
<= 71; j
++)
1322 printf ("%02X ", data
[j
]);
1324 printf ("Manufacturing Location %02X\n", data
[72]);
1325 puts ("Manufacturer's Part Number ");
1326 for (j
= 73; j
<= 90; j
++)
1327 printf ("%02X ", data
[j
]);
1329 printf ("Revision Code %02X %02X\n", data
[91], data
[92]);
1330 printf ("Manufacturing Date %02X %02X\n", data
[93], data
[94]);
1331 puts ("Assembly Serial Number ");
1332 for (j
= 95; j
<= 98; j
++)
1333 printf ("%02X ", data
[j
]);
1337 printf ("Speed rating PC%d\n",
1338 data
[126] == 0x66 ? 66 : data
[126]);
1346 * i2c edid {i2c_chip}
1348 #if defined(CONFIG_I2C_EDID)
1349 int do_edid(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *const argv
[])
1352 struct edid1_info edid
;
1359 chip
= simple_strtoul(argv
[1], NULL
, 16);
1360 if (i2c_read(chip
, 0, 1, (uchar
*)&edid
, sizeof(edid
)) != 0) {
1361 puts("Error reading EDID content.\n");
1365 if (edid_check_info(&edid
)) {
1366 puts("Content isn't valid EDID.\n");
1370 edid_print_info(&edid
);
1374 #endif /* CONFIG_I2C_EDID */
1376 #if defined(CONFIG_I2C_MUX)
1378 * do_i2c_add_bus() - Handle the "i2c bus" command-line command
1379 * @cmdtp: Command data struct pointer
1380 * @flag: Command flag
1381 * @argc: Command-line argument count
1382 * @argv: Array of command-line arguments
1384 * Returns zero always.
1386 static int do_i2c_add_bus(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1391 /* show all busses */
1393 I2C_MUX_DEVICE
*device
= i2c_mux_devices
;
1395 printf ("Busses reached over muxes:\n");
1396 while (device
!= NULL
) {
1397 printf ("Bus ID: %x\n", device
->busid
);
1398 printf (" reached over Mux(es):\n");
1400 while (mux
!= NULL
) {
1401 printf (" %s@%x ch: %x\n", mux
->name
, mux
->chip
, mux
->channel
);
1404 device
= device
->next
;
1407 (void)i2c_mux_ident_muxstring ((uchar
*)argv
[1]);
1412 #endif /* CONFIG_I2C_MUX */
1414 #if defined(CONFIG_I2C_MULTI_BUS)
1416 * do_i2c_bus_num() - Handle the "i2c dev" command-line command
1417 * @cmdtp: Command data struct pointer
1418 * @flag: Command flag
1419 * @argc: Command-line argument count
1420 * @argv: Array of command-line arguments
1422 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
1425 static int do_i2c_bus_num(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1430 /* querying current setting */
1431 printf("Current bus is %d\n", i2c_get_bus_num());
1433 bus_idx
= simple_strtoul(argv
[1], NULL
, 10);
1434 printf("Setting bus to %d\n", bus_idx
);
1435 ret
= i2c_set_bus_num(bus_idx
);
1437 printf("Failure changing bus number (%d)\n", ret
);
1441 #endif /* CONFIG_I2C_MULTI_BUS */
1444 * do_i2c_bus_speed() - Handle the "i2c speed" command-line command
1445 * @cmdtp: Command data struct pointer
1446 * @flag: Command flag
1447 * @argc: Command-line argument count
1448 * @argv: Array of command-line arguments
1450 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
1453 static int do_i2c_bus_speed(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1458 /* querying current speed */
1459 printf("Current bus speed=%d\n", i2c_get_bus_speed());
1461 speed
= simple_strtoul(argv
[1], NULL
, 10);
1462 printf("Setting bus speed to %d Hz\n", speed
);
1463 ret
= i2c_set_bus_speed(speed
);
1465 printf("Failure changing bus speed (%d)\n", ret
);
1471 * do_i2c_mm() - Handle the "i2c mm" command-line command
1472 * @cmdtp: Command data struct pointer
1473 * @flag: Command flag
1474 * @argc: Command-line argument count
1475 * @argv: Array of command-line arguments
1477 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
1480 static int do_i2c_mm(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1482 return mod_i2c_mem (cmdtp
, 1, flag
, argc
, argv
);
1486 * do_i2c_nm() - Handle the "i2c nm" command-line command
1487 * @cmdtp: Command data struct pointer
1488 * @flag: Command flag
1489 * @argc: Command-line argument count
1490 * @argv: Array of command-line arguments
1492 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
1495 static int do_i2c_nm(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1497 return mod_i2c_mem (cmdtp
, 0, flag
, argc
, argv
);
1501 * do_i2c_reset() - Handle the "i2c reset" command-line command
1502 * @cmdtp: Command data struct pointer
1503 * @flag: Command flag
1504 * @argc: Command-line argument count
1505 * @argv: Array of command-line arguments
1507 * Returns zero always.
1509 static int do_i2c_reset(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1511 i2c_init(CONFIG_SYS_I2C_SPEED
, CONFIG_SYS_I2C_SLAVE
);
1515 static cmd_tbl_t cmd_i2c_sub
[] = {
1516 #if defined(CONFIG_I2C_MUX)
1517 U_BOOT_CMD_MKENT(bus
, 1, 1, do_i2c_add_bus
, "", ""),
1518 #endif /* CONFIG_I2C_MUX */
1519 U_BOOT_CMD_MKENT(crc32
, 3, 1, do_i2c_crc
, "", ""),
1520 #if defined(CONFIG_I2C_MULTI_BUS)
1521 U_BOOT_CMD_MKENT(dev
, 1, 1, do_i2c_bus_num
, "", ""),
1522 #endif /* CONFIG_I2C_MULTI_BUS */
1523 #if defined(CONFIG_I2C_EDID)
1524 U_BOOT_CMD_MKENT(edid
, 1, 1, do_edid
, "", ""),
1525 #endif /* CONFIG_I2C_EDID */
1526 U_BOOT_CMD_MKENT(loop
, 3, 1, do_i2c_loop
, "", ""),
1527 U_BOOT_CMD_MKENT(md
, 3, 1, do_i2c_md
, "", ""),
1528 U_BOOT_CMD_MKENT(mm
, 2, 1, do_i2c_mm
, "", ""),
1529 U_BOOT_CMD_MKENT(mw
, 3, 1, do_i2c_mw
, "", ""),
1530 U_BOOT_CMD_MKENT(nm
, 2, 1, do_i2c_nm
, "", ""),
1531 U_BOOT_CMD_MKENT(probe
, 0, 1, do_i2c_probe
, "", ""),
1532 U_BOOT_CMD_MKENT(read
, 5, 1, do_i2c_read
, "", ""),
1533 U_BOOT_CMD_MKENT(write
, 5, 0, do_i2c_write
, "", ""),
1534 U_BOOT_CMD_MKENT(reset
, 0, 1, do_i2c_reset
, "", ""),
1535 #if defined(CONFIG_CMD_SDRAM)
1536 U_BOOT_CMD_MKENT(sdram
, 1, 1, do_sdram
, "", ""),
1538 U_BOOT_CMD_MKENT(speed
, 1, 1, do_i2c_bus_speed
, "", ""),
1541 #ifdef CONFIG_NEEDS_MANUAL_RELOC
1542 void i2c_reloc(void) {
1543 fixup_cmdtable(cmd_i2c_sub
, ARRAY_SIZE(cmd_i2c_sub
));
1548 * do_i2c() - Handle the "i2c" command-line command
1549 * @cmdtp: Command data struct pointer
1550 * @flag: Command flag
1551 * @argc: Command-line argument count
1552 * @argv: Array of command-line arguments
1554 * Returns zero on success, CMD_RET_USAGE in case of misuse and negative
1557 static int do_i2c(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char * const argv
[])
1562 return CMD_RET_USAGE
;
1564 /* Strip off leading 'i2c' command argument */
1568 c
= find_cmd_tbl(argv
[0], &cmd_i2c_sub
[0], ARRAY_SIZE(cmd_i2c_sub
));
1571 return c
->cmd(cmdtp
, flag
, argc
, argv
);
1573 return CMD_RET_USAGE
;
1576 /***************************************************/
1577 #ifdef CONFIG_SYS_LONGHELP
1578 static char i2c_help_text
[] =
1579 #if defined(CONFIG_I2C_MUX)
1580 "bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes\ni2c "
1581 #endif /* CONFIG_I2C_MUX */
1582 "crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
1583 #if defined(CONFIG_I2C_MULTI_BUS)
1584 "i2c dev [dev] - show or set current I2C bus\n"
1585 #endif /* CONFIG_I2C_MULTI_BUS */
1586 #if defined(CONFIG_I2C_EDID)
1587 "i2c edid chip - print EDID configuration information\n"
1588 #endif /* CONFIG_I2C_EDID */
1589 "i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n"
1590 "i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n"
1591 "i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n"
1592 "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n"
1593 "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n"
1594 "i2c probe [address] - test for and show device(s) on the I2C bus\n"
1595 "i2c read chip address[.0, .1, .2] length memaddress - read to memory \n"
1596 "i2c write memaddress chip address[.0, .1, .2] length - write memory to i2c\n"
1597 "i2c reset - re-init the I2C Controller\n"
1598 #if defined(CONFIG_CMD_SDRAM)
1599 "i2c sdram chip - print SDRAM configuration information\n"
1601 "i2c speed [speed] - show or set I2C bus speed";
1610 #if defined(CONFIG_I2C_MUX)
1611 static int i2c_mux_add_device(I2C_MUX_DEVICE
*dev
)
1613 I2C_MUX_DEVICE
*devtmp
= i2c_mux_devices
;
1615 if (i2c_mux_devices
== NULL
) {
1616 i2c_mux_devices
= dev
;
1619 while (devtmp
->next
!= NULL
)
1620 devtmp
= devtmp
->next
;
1626 I2C_MUX_DEVICE
*i2c_mux_search_device(int id
)
1628 I2C_MUX_DEVICE
*device
= i2c_mux_devices
;
1630 while (device
!= NULL
) {
1631 if (device
->busid
== id
)
1633 device
= device
->next
;
1638 /* searches in the buf from *pos the next ':'.
1640 * 0 if found (with *pos = where)
1641 * < 0 if an error occured
1642 * > 0 if the end of buf is reached
1644 static int i2c_mux_search_next (int *pos
, uchar
*buf
, int len
)
1646 while ((buf
[*pos
] != ':') && (*pos
< len
)) {
1651 if (buf
[*pos
] != ':')
1656 static int i2c_mux_get_busid (void)
1658 int tmp
= i2c_mux_busid
;
1664 /* Analyses a Muxstring and immediately sends the
1665 commands to the muxes. Runs from flash.
1667 int i2c_mux_ident_muxstring_f (uchar
*buf
)
1672 int len
= strlen((char *)buf
);
1680 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1683 /* search address */
1686 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1690 chip
= simple_strtoul((char *)&buf
[oldpos
], NULL
, 16);
1692 /* search channel */
1695 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1699 if (buf
[pos
] != 0) {
1703 channel
= simple_strtoul((char *)&buf
[oldpos
], NULL
, 16);
1706 if (i2c_write(chip
, 0, 0, &channel
, 1) != 0) {
1707 printf ("Error setting Mux: chip:%x channel: \
1708 %x\n", chip
, channel
);
1720 /* Analyses a Muxstring and if this String is correct
1721 * adds a new I2C Bus.
1723 I2C_MUX_DEVICE
*i2c_mux_ident_muxstring (uchar
*buf
)
1725 I2C_MUX_DEVICE
*device
;
1730 int len
= strlen((char *)buf
);
1733 device
= (I2C_MUX_DEVICE
*)malloc (sizeof(I2C_MUX_DEVICE
));
1735 device
->busid
= i2c_mux_get_busid ();
1736 device
->next
= NULL
;
1738 mux
= (I2C_MUX
*)malloc (sizeof(I2C_MUX
));
1740 /* search name of mux */
1742 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1744 printf ("%s no name.\n", __FUNCTION__
);
1745 mux
->name
= (char *)malloc (pos
- oldpos
+ 1);
1746 memcpy (mux
->name
, &buf
[oldpos
], pos
- oldpos
);
1747 mux
->name
[pos
- oldpos
] = 0;
1748 /* search address */
1751 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1753 printf ("%s no mux address.\n", __FUNCTION__
);
1755 mux
->chip
= simple_strtoul((char *)&buf
[oldpos
], NULL
, 16);
1757 /* search channel */
1760 ret
= i2c_mux_search_next(&pos
, buf
, len
);
1762 printf ("%s no mux channel.\n", __FUNCTION__
);
1764 if (buf
[pos
] != 0) {
1768 mux
->channel
= simple_strtoul((char *)&buf
[oldpos
], NULL
, 16);
1771 if (device
->mux
== NULL
)
1774 I2C_MUX
*muxtmp
= device
->mux
;
1775 while (muxtmp
->next
!= NULL
) {
1776 muxtmp
= muxtmp
->next
;
1785 i2c_mux_add_device (device
);
1792 int i2x_mux_select_mux(int bus
)
1794 I2C_MUX_DEVICE
*dev
;
1797 if ((gd
->flags
& GD_FLG_RELOC
) != GD_FLG_RELOC
) {
1798 /* select Default Mux Bus */
1799 #if defined(CONFIG_SYS_I2C_IVM_BUS)
1800 i2c_mux_ident_muxstring_f ((uchar
*)CONFIG_SYS_I2C_IVM_BUS
);
1804 buf
= (unsigned char *) getenv("EEprom_ivm");
1806 i2c_mux_ident_muxstring_f (buf
);
1811 dev
= i2c_mux_search_device(bus
);
1816 while (mux
!= NULL
) {
1817 /* do deblocking on each level of mux, before mux config */
1819 if (i2c_write(mux
->chip
, 0, 0, &mux
->channel
, 1) != 0) {
1820 printf ("Error setting Mux: chip:%x channel: \
1821 %x\n", mux
->chip
, mux
->channel
);
1826 /* do deblocking on each level of mux and after mux config */
1830 #endif /* CONFIG_I2C_MUX */