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Vincent Palatin 3d9544ae42 fruitpie: new PD TX driving for reworked board 
For boards reworked with FETs on the TX path, TX_DATA (PB14) needs to be
driven low when we are not transmitting.
Set MISO as GPIO low by default and set the alternate SPI function in
the TX enable code.

This should be backward compatible with non-reworked Fruitpies.

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

BRANCH=none
BUG=none
TEST=plug 2 fruitpies with a type-C cable and do a PD power
negotiation.

Change-Id: I9ef9c84147e9468667eed9c96647c6a9a7f79fdd
Reviewed-on: https://chromium-review.googlesource.com/202512
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Daming Chen <ddchen@chromium.org>
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Commit-Queue: Vincent Palatin <vpalatin@chromium.org>
2014-06-07 01:25:24 +00:00
board
fruitpie: new PD TX driving for reworked board
2014-06-07 01:25:24 +00:00
chip
samus: Add EC <-> PD i2c interface using host commands
2014-06-05 04:22:56 +00:00
common
samus: Add EC <-> PD i2c interface using host commands
2014-06-05 04:22:56 +00:00
core
Add cprints() and ccprints()
2014-05-21 20:32:17 +00:00
driver
add INA231 driver
2014-06-03 23:23:50 +00:00
extra
Tweaks to lightbar simulation
2014-06-05 23:14:34 +00:00
include
samus: Add EC <-> PD i2c interface using host commands
2014-06-05 04:22:56 +00:00
power
Add CONFIG_BRINGUP option to help debug signals for bringup
2014-06-05 01:36:44 +00:00
test
charger v2: supports charger watchdog
2014-04-23 20:50:48 +00:00
util
Add basic support for Twinkie dongle
2014-06-02 22:21:22 +00:00
.gitignore
Add TAGS and cscope.* to .gitignore
2014-03-31 22:45:09 +00:00
COMMIT-QUEUE.ini
Ignore failures in HWTest and VMTest in the commit queue.
2013-11-01 14:08:36 +00:00
LICENSE
Add LICENSE file to project
2012-05-11 09:11:52 -07:00
Makefile
cleanup: Remove mixed-case macros
2013-12-19 00:12:24 +00:00
Makefile.rules
build: Move libs after source or object files
2014-06-04 21:01:16 +00:00
Makefile.toolchain
discard unused functions at link time
2014-03-11 05:53:53 +00:00
OWNERS
Add OWNERS files
2014-04-02 19:58:53 +00:00
PRESUBMIT.cfg
Add presubmit check for unit test
2014-02-06 19:27:18 +00:00
README
Add standalone lightbar simulation tool
2014-05-15 05:20:14 +00:00
README.fmap
Update EC config and FMAP to reserve room for vboot signatures
2012-05-04 14:42:58 -07:00

README 

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit
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