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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 /drivers/gpio/mx31_gpio.c | |
| parent | 9f23ca42b3ba19b24e66fade572f2b86d929b6e8 (diff) | |
| download | u-boot-imx-5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0.zip u-boot-imx-5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0.tar.gz u-boot-imx-5da71efa18e8b4eac9afd8bfa13e3c7e7ddde1d0.tar.bz2 | |
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 'drivers/gpio/mx31_gpio.c')
0 files changed, 0 insertions, 0 deletions