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| author | Eric Millbrandt <emillbrandt@coldhaus.com> | 2009-09-03 08:09:44 -0500 |
|---|---|---|
| committer | Heiko Schocher <hs@denx.de> | 2009-09-06 11:26:04 +0200 |
| commit | 5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0 (patch) | |
| tree | cc1f409424f382c05c18cf8e6bd452fdc6768a44 /include/configs/galaxy5200.h | |
| parent | 9f23ca42b3ba19b24e66fade572f2b86d929b6e8 (diff) | |
| download | blackbird-obmc-uboot-5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0.tar.gz blackbird-obmc-uboot-5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0.zip | |
Reset i2c slave devices during init on mpc5xxx cpus
Reset any i2c devices that may have been interrupted during a system reset.
Normally this would be accomplished by clocking the line until SCL and SDA
are released and then sending a start condtiion (From an Atmel datasheet).
There is no direct access to the i2c pins so instead create start commands
through the i2c interface. Send a start command then delay for the SDA Hold
time, repeat this by disabling/enabling the bus a total of 9 times.
Signed-off-by: Eric Millbrandt <emillbrandt@dekaresearch.com>
Diffstat (limited to 'include/configs/galaxy5200.h')
| -rw-r--r-- | include/configs/galaxy5200.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/configs/galaxy5200.h b/include/configs/galaxy5200.h index a5b5a03a9a..f4b520d39f 100644 --- a/include/configs/galaxy5200.h +++ b/include/configs/galaxy5200.h @@ -110,6 +110,7 @@ #define CONFIG_SYS_I2C_MODULE 2 /* Select I2C module #1 or #2 */ #define CONFIG_SYS_I2C_SPEED 100000 /* 100 kHz */ #define CONFIG_SYS_I2C_SLAVE 0x7F +#define CONFIG_SYS_I2C_INIT_MPC5XXX /* Reset devices on i2c bus */ /* * EEPROM CAT24WC32 configuration |
