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Mulin Chao ea7226e207 npcx_evb: npcx_evb_arm: kahlee: Change pwm frequency of fan. 
Change pwm freq of fan from 100 to 25kHz. Normally, the operating freq
of pwm fan is around 25kHz. The inappropriate pwm freq will cause the
response time of fan spped is too long. Please notice the source clock
of pwm is apb2 now. The clock will be gating if ec enters deep sleep.
It should not enalbe CONFIG_LOW_POWER_S0 in board-level driver if fan is
used.

BRANCH=none
BUG=none
TEST=test fan used in kahlee and Sunon fan with fanset command on
npcx_evb and use faninfo for verifying.

Change-Id: Ic0e7509d9cdb2758bc6e674c207ac3dfbdc59dbe
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
Reviewed-on: https://chromium-review.googlesource.com/472647
Reviewed-by: Shawn N <shawnn@chromium.org>
2017-04-16 11:51:21 -07:00
board
npcx_evb: npcx_evb_arm: kahlee: Change pwm frequency of fan.
2017-04-16 11:51:21 -07:00
builtin
curve25519: strip-down, build and test
2017-02-23 16:02:03 -08:00
chip
ec: add initial soraka related files
2017-04-15 09:19:57 -07:00
common
common/update_fw: Remove board-specific rw_sections
2017-04-15 04:08:07 -07:00
core
common: Split rwsig parts from rsa.h header
2017-04-11 20:22:32 -07:00
cts
eCTS: Test task priority
2016-11-10 21:28:33 -08:00
docs
USB Serial: Add README and update CCD docs
2016-06-15 17:54:51 -07:00
driver
tcpm: anx74xx: Improvements to low power mode for S3/G3 chipset state
2017-04-11 20:22:34 -07:00
extra
usb_updater: post a reset during upstart on old versions
2017-04-07 14:15:36 -07:00
include
common/update_fw: Remove board-specific rw_sections
2017-04-15 04:08:07 -07:00
power
kahlee: initial board setting
2017-04-05 19:55:13 -07:00
test
chg_ramp: Don't change ICL until vals are init'd.
2017-03-30 17:35:44 -07:00
util
ec: add initial soraka related files
2017-04-15 09:19:57 -07:00
.checkpatch.conf
checkpatch: prevent stupid complaints about description title
2016-07-21 13:13:27 -07:00
.gitignore
Makefile.rules: Add targets to see file size differences
2016-11-15 17:43:21 -08:00
COMMIT-QUEUE.ini
COMMIT-QUEUE.ini: add strago-no-vmtest-pre-cq
2017-02-21 14:07:42 -08:00
LICENSE
Add LICENSE file to project
2012-05-11 09:11:52 -07:00
Makefile
makefile: allow different RO and RW CONFIG
2017-01-26 14:23:01 -08:00
Makefile.rules
rwsig: Add support for rwsig image types
2017-02-17 04:09:37 -08:00
Makefile.toolchain
Support alignment for EC host command structures
2016-10-19 20:07:09 -07:00
OWNERS
Add OWNERS files
2014-04-02 19:58:53 +00:00
PRESUBMIT.cfg
ec:Add presubmit hook to enforce host command definitions
2017-02-25 02:08:37 -08:00
README
README: Add link to quick-build instructions
2015-12-07 13:49:35 -08:00
README.fmap
Update EC config and FMAP to reserve room for vboot signatures
2012-05-04 14:42:58 -07:00
setup.py
ec3po: Add setup script.
2015-12-08 20:05:05 -08:00

README 

For an overview of the Embedded Controller firmware, refer to

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

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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