Kevin K Wong 2cf4269683 kunimitsu: Correct ADC calculation for VBUS.
According to MEC1322 datasheet, ADC VREF is 3V.

With the voltage divider on Kunimitsu, R1=180K and R2=20K,
so full ADC is equal to 30V if ADC VREF is 3V.

BUG=none
BRANCH=none
TEST=Checked value returned by adc console cmd.
20xxx mV is returned by Zinger.
14xxx mV is returned by Apple charger.

Change-Id: I155ce03e3c840740c1dc3a985a1d5cfcf3b40c30
Signed-off-by: Kevin K Wong <kevin.k.wong@intel.com>
Reviewed-on: https://chromium-review.googlesource.com/304192
Reviewed-by: Shawn N <shawnn@chromium.org>
2015-10-06 00:00:00 -07:00
2015-05-07 00:00:47 +00:00
2015-08-15 01:32:39 +00:00
2015-09-29 19:38:21 -07:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2014-05-15 05:20:14 +00:00

For an overview of the Embedded Controller firmware, refer to

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