[U-Boot] [PATCH] i2c: add i2c reset command.
Heiko Schocher
hs at denx.de
Mon Sep 29 09:52:45 CEST 2008
Signed-off-by: Heiko Schocher <hs at denx.de>
---
common/cmd_i2c.c | 9 +++++++++
1 files changed, 9 insertions(+), 0 deletions(-)
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index ef3928e..414c888 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -1182,6 +1182,12 @@ int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
#endif
#if defined(CONFIG_I2C_CMD_TREE)
+int do_i2c_res(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+{
+ i2c_init (CFG_I2C_SPEED, CFG_I2C_SLAVE);
+ return 0;
+}
+
#if defined(CONFIG_I2C_MULTI_BUS)
int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
@@ -1240,6 +1246,8 @@ int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
return do_i2c_probe(cmdtp, flag, --argc, ++argv);
if (!strncmp(argv[1], "lo", 2))
return do_i2c_loop(cmdtp, flag, --argc, ++argv);
+ if (!strncmp(argv[1], "re", 2))
+ return do_i2c_res(cmdtp, flag, --argc, ++argv);
#if defined(CONFIG_CMD_SDRAM)
if (!strncmp(argv[1], "sd", 2))
return do_sdram(cmdtp, flag, --argc, ++argv);
@@ -1267,6 +1275,7 @@ U_BOOT_CMD(
"i2c crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
"i2c probe - show devices on the I2C bus\n"
"i2c loop chip address[.0, .1, .2] [# of objects] - looping read of device\n"
+ "i2c res - resets the I2C Controller\n"
#if defined(CONFIG_CMD_SDRAM)
"i2c sdram chip - print SDRAM configuration information\n"
#endif
--
1.5.6.1
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
More information about the U-Boot
mailing list