Vincent Palatin cbbaf428a9 stm32: fix I2C waveforms and states ...

- most events happen in the first 100us, we don't want to sleep to 2ms.
  This introduces big delays. Just poll the 150us, then fall back to
  sleep.
- restore properly the port state after master transfers.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BUG=None
TEST=On Lucas DVT, probe I2C signals with logic analyzer and manually
check them. Verify that the keyboard is still working with the charging
code enabled.

Change-Id: Ic0afde081d070ff6720d924469ecc7166bbc9e4c
Reviewed-on: https://gerrit.chromium.org/gerrit/26161
Commit-Ready: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
Tested-by: Vincent Palatin <vpalatin@chromium.org>

2012-06-26 20:52:33 -07:00

..

lm4

Power on AP every EC reboot.

2012-06-26 17:33:53 -07:00

stm32

stm32: fix I2C waveforms and states

2012-06-26 20:52:33 -07:00