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6bc911d978cb96694cb3f00d11fbe1848e10ab27
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Todd Broch 6bc911d978 pd: Expand polarity logic to include Ra pull-down logic. 
Original implemenation of polarity only addressed Rd.  This CL hopes
to address the addition of the Ra pull-down for powered accessories.

Truth table based on type-C specfication document is included in
source as well.

BRANCH=none
BUG=chrome-os-partner:28585
TEST=manual,

Setup:
  <insert hoho into samus type-C port>
  # from PD MCU console
  typec <port>

Result:
  See appropriate polarity.  For example,

  typec 1
  Port C1: CC1 445 mV  CC2 115 mV (polarity:CC1)
  Superspeed USB1

  <flip type-C accessory (hoho)>
  typec 1
  Port C1: CC1 119 mV  CC2 426 mV (polarity:CC2)
  Superspeed USB1

Also see correct polarity when just Rd is present.

Change-Id: I09073d731e4a6050281add3673cb4ec24c053da9
Signed-off-by: Todd Broch <tbroch@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/215666
Reviewed-by: Alec Berg <alecaberg@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2014-09-02 23:34:47 +00:00
board
plankton: Update board configuration to Plankton V2
2014-09-02 04:21:07 +00:00
chip
EC: clean up i2c_read_string
2014-08-29 03:00:20 +00:00
common
pd: Expand polarity logic to include Ra pull-down logic.
2014-09-02 23:34:47 +00:00
core
cortex-m0: stm32f0: use RW vector table when running RW code
2014-07-29 04:36:44 +00:00
driver
EC: clean up i2c_read_string
2014-08-29 03:00:20 +00:00
extra
Make lightbar simulation compile again
2014-08-20 21:07:15 +00:00
include
Put 'hostcmd' console command behind a config flag
2014-09-01 11:06:57 +00:00
power
Veyron: Add a time_cancel in power button release
2014-08-29 03:00:12 +00:00
test
samus: added gyro support for lsm6ds0
2014-08-26 03:05:55 +00:00
util
ectool: read max outsize/insize from ec during comm_init
2014-08-29 21:55:34 +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
Makefile: Add support for per-board symlinks to top level
2014-07-30 03:10:06 +00:00
Makefile.rules
Makefile: Add support for per-board symlinks to top level
2014-07-30 03:10:06 +00:00
Makefile.toolchain
samus: add host commands for flashing zinger RW
2014-08-26 23:06:23 +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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