The concept of a 'current bus' is now implemented in the command line rather than in the uclass. Also the address length does not need to be specified with each command - really we should consider dropping this from most commands but it works OK for now.
Signed-off-by: Simon Glass sjg@chromium.org ---
Changes in v3: - Adjust for slightly altered I2C uclass API - Add new 'i2c flags' command to get/set chip flags
Changes in v2: - Change alen to int so that it can be -1 (this was a bug) - Call the deblock() method for 'i2c reset'
common/cmd_i2c.c | 376 +++++++++++++++++++++++++++++++++++++++++++++++-------- 1 file changed, 323 insertions(+), 53 deletions(-)
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c index c266b88..39f9735 100644 --- a/common/cmd_i2c.c +++ b/common/cmd_i2c.c @@ -69,8 +69,10 @@ #include <bootretry.h> #include <cli.h> #include <command.h> +#include <dm.h> #include <edid.h> #include <environment.h> +#include <errno.h> #include <i2c.h> #include <malloc.h> #include <asm/byteorder.h> @@ -117,6 +119,60 @@ static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
#define DISP_LINE_LEN 16
+/* + * Default for driver model is to use the chip's existing address length. + * For legacy code, this is not stored, so we need to use a suitable + * default. + */ +#ifdef CONFIG_DM_I2C +#define DEFAULT_ADDR_LEN (-1) +#else +#define DEFAULT_ADDR_LEN 1 +#endif + +#ifdef CONFIG_DM_I2C +static struct udevice *i2c_cur_bus; + +static int i2c_set_bus_num(unsigned int busnum) +{ + struct udevice *bus; + int ret; + + ret = uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus); + if (ret) { + debug("%s: No bus %d\n", __func__, busnum); + return ret; + } + i2c_cur_bus = bus; + + return 0; +} + +static int i2c_get_cur_bus(struct udevice **busp) +{ + if (!i2c_cur_bus) { + puts("No I2C bus selected\n"); + return -ENODEV; + } + *busp = i2c_cur_bus; + + return 0; +} + +static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp) +{ + struct udevice *bus; + int ret; + + ret = i2c_get_cur_bus(&bus); + if (ret) + return ret; + + return i2c_get_chip(bus, chip_addr, devp); +} + +#endif + /** * i2c_init_board() - Board-specific I2C bus init * @@ -143,7 +199,7 @@ void i2c_init_board(void) * * Returns I2C bus speed in Hz. */ -#if !defined(CONFIG_SYS_I2C) +#if !defined(CONFIG_SYS_I2C) && !defined(CONFIG_DM_I2C) /* * TODO: Implement architecture-specific get/set functions * Should go away, if we switched completely to new multibus support @@ -182,12 +238,12 @@ int i2c_set_bus_speed(unsigned int speed) * * Returns the address length. */ -static uint get_alen(char *arg) +static uint get_alen(char *arg, int default_len) { int j; int alen;
- alen = 1; + alen = default_len; for (j = 0; j < 8; j++) { if (arg[j] == '.') { alen = arg[j+1] - '0'; @@ -227,8 +283,13 @@ static int i2c_report_err(int ret, enum i2c_err_op op) static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { u_char chip; - uint devaddr, alen, length; + uint devaddr, length; + int alen; u_char *memaddr; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc != 5) return CMD_RET_USAGE; @@ -243,7 +304,7 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv * 2 bytes long. Some day it might be 3 bytes long :-). */ devaddr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE;
@@ -257,18 +318,31 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv */ memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16);
- if (i2c_read(chip, devaddr, alen, memaddr, length) != 0) { - i2c_report_err(-1, I2C_ERR_READ); - return 1; - } +#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (!ret) + ret = i2c_read(dev, devaddr, memaddr, length); +#else + ret = i2c_read(chip, devaddr, alen, memaddr, length); +#endif + if (ret) + return i2c_report_err(ret, I2C_ERR_READ); + return 0; }
static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { u_char chip; - uint devaddr, alen, length; + uint devaddr, length; + int alen; u_char *memaddr; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc != 5) return cmd_usage(cmdtp); @@ -288,7 +362,7 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[ * 2 bytes long. Some day it might be 3 bytes long :-). */ devaddr = simple_strtoul(argv[3], NULL, 16); - alen = get_alen(argv[3]); + alen = get_alen(argv[3], DEFAULT_ADDR_LEN); if (alen > 3) return cmd_usage(cmdtp);
@@ -297,10 +371,22 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[ */ length = simple_strtoul(argv[4], NULL, 16);
+#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_WRITE); +#endif + while (length-- > 0) { - if (i2c_write(chip, devaddr++, alen, memaddr++, 1) != 0) { - return i2c_report_err(-1, I2C_ERR_WRITE); - } +#ifdef CONFIG_DM_I2C + ret = i2c_write(dev, devaddr++, memaddr++, 1); +#else + ret = i2c_write(chip, devaddr++, alen, memaddr++, 1); +#endif + if (ret) + return i2c_report_err(ret, I2C_ERR_WRITE); /* * No write delay with FRAM devices. */ @@ -311,6 +397,38 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[ return 0; }
+#ifdef CONFIG_DM_I2C +static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc, + char *const argv[]) +{ + struct udevice *dev; + uint flags; + int chip; + int ret; + + if (argc < 2) + return CMD_RET_USAGE; + + chip = simple_strtoul(argv[1], NULL, 16); + ret = i2c_get_cur_bus_chip(chip, &dev); + if (ret) + return i2c_report_err(ret, I2C_ERR_READ); + + if (argc > 2) { + flags = simple_strtoul(argv[2], NULL, 16); + ret = i2c_set_chip_flags(dev, flags); + } else { + ret = i2c_get_chip_flags(dev, &flags); + if (!ret) + printf("%x\n", flags); + } + if (ret) + return i2c_report_err(ret, I2C_ERR_READ); + + return 0; +} +#endif + /** * do_i2c_md() - Handle the "i2c md" command-line command * @cmdtp: Command data struct pointer @@ -327,8 +445,13 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { u_char chip; - uint addr, alen, length; + uint addr, length; + int alen; int j, nbytes, linebytes; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
/* We use the last specified parameters, unless new ones are * entered. @@ -356,7 +479,7 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] * 2 bytes long. Some day it might be 3 bytes long :-). */ addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE;
@@ -368,6 +491,14 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] length = simple_strtoul(argv[3], NULL, 16); }
+#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_READ); +#endif + /* * Print the lines. * @@ -381,8 +512,13 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
- if (i2c_read(chip, addr, alen, linebuf, linebytes) != 0) - i2c_report_err(-1, I2C_ERR_READ); +#ifdef CONFIG_DM_I2C + ret = i2c_read(dev, addr, linebuf, linebytes); +#else + ret = i2c_read(chip, addr, alen, linebuf, linebytes); +#endif + if (ret) + i2c_report_err(ret, I2C_ERR_READ); else { printf("%04x:", addr); cp = linebuf; @@ -429,9 +565,13 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] { uchar chip; ulong addr; - uint alen; + int alen; uchar byte; int count; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if ((argc < 4) || (argc > 5)) return CMD_RET_USAGE; @@ -445,10 +585,17 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] * Address is always specified. */ addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_WRITE); +#endif /* * Value to write is always specified. */ @@ -463,8 +610,13 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] count = 1;
while (count-- > 0) { - if (i2c_write(chip, addr++, alen, &byte, 1) != 0) - i2c_report_err(-1, I2C_ERR_WRITE); +#ifdef CONFIG_DM_I2C + ret = i2c_write(dev, addr++, &byte, 1); +#else + ret = i2c_write(chip, addr++, alen, &byte, 1); +#endif + if (ret) + i2c_report_err(ret, I2C_ERR_WRITE); /* * Wait for the write to complete. The write can take * up to 10mSec (we allow a little more time). @@ -499,11 +651,15 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] { uchar chip; ulong addr; - uint alen; + int alen; int count; uchar byte; ulong crc; ulong err; + int ret = 0; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc < 4) return CMD_RET_USAGE; @@ -517,10 +673,17 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] * Address is always specified. */ addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_READ); +#endif /* * Count is always specified */ @@ -534,13 +697,18 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] crc = 0; err = 0; while (count-- > 0) { - if (i2c_read(chip, addr, alen, &byte, 1) != 0) +#ifdef CONFIG_DM_I2C + ret = i2c_read(dev, addr, &byte, 1); +#else + ret = i2c_read(chip, addr, alen, &byte, 1); +#endif + if (ret) err++; crc = crc32 (crc, &byte, 1); addr++; } if (err > 0) - i2c_report_err(-1, I2C_ERR_READ); + i2c_report_err(ret, I2C_ERR_READ); else printf ("%08lx\n", crc);
@@ -568,10 +736,14 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg { uchar chip; ulong addr; - uint alen; + int alen; ulong data; int size = 1; int nbytes; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc != 3) return CMD_RET_USAGE; @@ -601,19 +773,32 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg * Address is always specified. */ addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE; }
+#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_WRITE); +#endif + /* * Print the address, followed by value. Then accept input for * the next value. A non-converted value exits. */ do { printf("%08lx:", addr); - if (i2c_read(chip, addr, alen, (uchar *)&data, size) != 0) - i2c_report_err(-1, I2C_ERR_READ); +#ifdef CONFIG_DM_I2C + ret = i2c_read(dev, addr, (uchar *)&data, size); +#else + ret = i2c_read(chip, addr, alen, (uchar *)&data, size); +#endif + if (ret) + i2c_report_err(ret, I2C_ERR_READ); else { data = cpu_to_be32(data); if (size == 1) @@ -655,8 +840,15 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg * good enough to not time out */ bootretry_reset_cmd_timeout(); - if (i2c_write(chip, addr, alen, (uchar *)&data, size) != 0) - i2c_report_err(-1, I2C_ERR_WRITE); +#ifdef CONFIG_DM_I2C + ret = i2c_write(dev, addr, (uchar *)&data, + size); +#else + ret = i2c_write(chip, addr, alen, + (uchar *)&data, size); +#endif + if (ret) + i2c_report_err(ret, I2C_ERR_WRITE); #ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000); #endif @@ -697,6 +889,13 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv int k, skip; unsigned int bus = GET_BUS_NUM; #endif /* NOPROBES */ + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *bus, *dev; + + if (i2c_get_cur_bus(&bus)) + return CMD_RET_FAILURE; +#endif
if (argc == 2) addr = simple_strtol(argv[1], 0, 16); @@ -717,7 +916,12 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv if (skip) continue; #endif - if (i2c_probe(j) == 0) { +#ifdef CONFIG_DM_I2C + ret = i2c_probe(bus, j, &dev); +#else + ret = i2c_probe(j); +#endif + if (ret == 0) { printf(" %02X", j); found++; } @@ -754,11 +958,15 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { u_char chip; - ulong alen; + int alen; uint addr; uint length; u_char bytes[16]; int delay; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc < 3) return CMD_RET_USAGE; @@ -772,9 +980,16 @@ static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] * Address is always specified. */ addr = simple_strtoul(argv[2], NULL, 16); - alen = get_alen(argv[2]); + alen = get_alen(argv[2], DEFAULT_ADDR_LEN); if (alen > 3) return CMD_RET_USAGE; +#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret && alen != -1) + ret = i2c_set_chip_offset_len(dev, alen); + if (ret) + return i2c_report_err(ret, I2C_ERR_WRITE); +#endif
/* * Length is the number of objects, not number of bytes. @@ -794,8 +1009,13 @@ static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[] * Run the loop... */ while (1) { - if (i2c_read(chip, addr, alen, bytes, length) != 0) - i2c_report_err(-1, I2C_ERR_READ); +#ifdef CONFIG_DM_I2C + ret = i2c_read(dev, addr, bytes, length); +#else + ret = i2c_read(chip, addr, alen, bytes, length); +#endif + if (ret) + i2c_report_err(ret, I2C_ERR_READ); udelay(delay); }
@@ -1345,6 +1565,10 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) { u_char chip; struct edid1_info edid; + int ret; +#ifdef CONFIG_DM_I2C + struct udevice *dev; +#endif
if (argc < 2) { cmd_usage(cmdtp); @@ -1352,10 +1576,15 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[]) }
chip = simple_strtoul(argv[1], NULL, 16); - if (i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)) != 0) { - i2c_report_err(-1, I2C_ERR_READ); - return 1; - } +#ifdef CONFIG_DM_I2C + ret = i2c_get_cur_bus_chip(chip, &dev); + if (!ret) + ret = i2c_read(dev, 0, (uchar *)&edid, sizeof(edid)); +#else + ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)); +#endif + if (ret) + return i2c_report_err(ret, I2C_ERR_READ);
if (edid_check_info(&edid)) { puts("Content isn't valid EDID.\n"); @@ -1437,17 +1666,28 @@ static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc, * Returns zero on success, CMD_RET_USAGE in case of misuse and negative * on error. */ -#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) +#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) || \ + defined(CONFIG_DM_I2C) static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { int ret = 0; - unsigned int bus_no; + int bus_no;
- if (argc == 1) + if (argc == 1) { /* querying current setting */ - printf("Current bus is %d\n", i2c_get_bus_num()); - else { +#ifdef CONFIG_DM_I2C + struct udevice *bus; + + if (!i2c_get_cur_bus(&bus)) + bus_no = bus->seq; + else + bus_no = -1; +#else + bus_no = i2c_get_bus_num(); +#endif + printf("Current bus is %d\n", bus_no); + } else { bus_no = simple_strtoul(argv[1], NULL, 10); #if defined(CONFIG_SYS_I2C) if (bus_no >= CONFIG_SYS_NUM_I2C_BUSES) { @@ -1478,13 +1718,28 @@ static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const { int speed, ret=0;
- if (argc == 1) +#ifdef CONFIG_DM_I2C + struct udevice *bus; + + if (i2c_get_cur_bus(&bus)) + return 1; +#endif + if (argc == 1) { +#ifdef CONFIG_DM_I2C + speed = i2c_get_bus_speed(bus); +#else + speed = i2c_get_bus_speed(); +#endif /* querying current speed */ - printf("Current bus speed=%d\n", i2c_get_bus_speed()); - else { + printf("Current bus speed=%d\n", speed); + } else { speed = simple_strtoul(argv[1], NULL, 10); printf("Setting bus speed to %d Hz\n", speed); +#ifdef CONFIG_DM_I2C + ret = i2c_set_bus_speed(bus, speed); +#else ret = i2c_set_bus_speed(speed); +#endif if (ret) printf("Failure changing bus speed (%d)\n", ret); } @@ -1532,7 +1787,16 @@ static int do_i2c_nm(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) */ static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[]) { -#if defined(CONFIG_SYS_I2C) +#if defined(CONFIG_DM_I2C) + struct udevice *bus; + + if (i2c_get_cur_bus(&bus)) + return CMD_RET_FAILURE; + if (i2c_deblock(bus)) { + printf("Error: Not supported by the driver\n"); + return CMD_RET_FAILURE; + } +#elif defined(CONFIG_SYS_I2C) i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr); #else i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE); @@ -1546,7 +1810,7 @@ static cmd_tbl_t cmd_i2c_sub[] = { #endif U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""), #if defined(CONFIG_SYS_I2C) || \ - defined(CONFIG_I2C_MULTI_BUS) + defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""), #endif /* CONFIG_I2C_MULTI_BUS */ #if defined(CONFIG_I2C_EDID) @@ -1560,6 +1824,9 @@ static cmd_tbl_t cmd_i2c_sub[] = { U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""), U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""), U_BOOT_CMD_MKENT(write, 5, 0, do_i2c_write, "", ""), +#ifdef CONFIG_DM_I2C + U_BOOT_CMD_MKENT(flags, 2, 1, do_i2c_flags, "", ""), +#endif U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""), #if defined(CONFIG_CMD_SDRAM) U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""), @@ -1610,7 +1877,7 @@ static char i2c_help_text[] = #endif "crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n" #if defined(CONFIG_SYS_I2C) || \ - defined(CONFIG_I2C_MULTI_BUS) + defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C) "i2c dev [dev] - show or set current I2C bus\n" #endif /* CONFIG_I2C_MULTI_BUS */ #if defined(CONFIG_I2C_EDID) @@ -1622,8 +1889,11 @@ static char i2c_help_text[] = "i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n" "i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n" "i2c probe [address] - test for and show device(s) on the I2C bus\n" - "i2c read chip address[.0, .1, .2] length memaddress - read to memory \n" + "i2c read chip address[.0, .1, .2] length memaddress - read to memory\n" "i2c write memaddress chip address[.0, .1, .2] length - write memory to i2c\n" +#ifdef CONFIG_DM_I2C + "i2c flags chip [flags] - set or get chip flags\n" +#endif "i2c reset - re-init the I2C Controller\n" #if defined(CONFIG_CMD_SDRAM) "i2c sdram chip - print SDRAM configuration information\n"