Aaron Durbin b3d1171d42 skylake: power sequencing update ...

There are a number issues with the current skylake power
sequencing. First, SLP_SUS_L was not being honored from
the chipset when a deep S5 or S3 was requested. Additionally
the BATLOW_L signal was being used to block the chipset from
waking which caused a race in waking from deep S5 that required
an additional pulse of the PCH_WAKE_L signal instead of the
chipset seeing the power button event. Another issue is that
POWER_S5 state was being completely bypassed so any global
resets that brought down SLP_S4_L caused the state machine
to enter into G3 state.

The code was changed to remove BATLOW_L usage, PCH_WAKE_L
in the POWER_G3S5 state, and SLP_SUS_L is honored in the
non POWER_S5G3 and POWER_G3 state. That allows SLP_SUS_L
pass-thru to work on glaods. Lastly the code was reorganized
to accomodate the above change without sprinkling them
throughout the state transitions.

BUG=chrome-os-partner:44081
BUG=chrome-os-partner:44082
BUG=chrome-os-partner:43475
BRANCH=None
TEST=Built and booted glados. Deep S3 and S5 wakes work. Fresh
     flash plus a global reset doesn't bring the system down to G3.

Change-Id: Id1d7af1b6a733a9db5aad584950da8ab5898ea83
Signed-off-by: Aaron Durbin <adurbin@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/293844
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>

2015-08-19 08:10:20 +00:00

..

baytrail.c

power: Move EC_CMD_GSV_PAUSE_IN_S5 handler to common code

2015-05-07 17:25:40 +00:00

braswell.c

strago: Power state transition in case of apshutdown

2015-08-11 19:52:35 +00:00

build.mk

Remove obsolete board-specific code

2015-06-10 18:24:05 +00:00

common.c

tasks: Remove most task_start_called() calls.

2015-08-01 02:52:37 +00:00

ec_driven.c

ryu: add a dummy power module for controlling sensors.

2014-11-18 05:19:47 +00:00

gaia.c

Add cprints() and ccprints()

2014-05-21 20:32:17 +00:00

haswell.c

power: Move EC_CMD_GSV_PAUSE_IN_S5 handler to common code

2015-05-07 17:25:40 +00:00

mediatek.c

mediatek: Fix llama build

2015-08-06 18:48:14 +00:00

rockchip.c

Power Button: Wait for power button to be stable when waiting for release

2015-02-10 23:07:14 +00:00

skylake.c

skylake: power sequencing update

2015-08-19 08:10:20 +00:00

tegra.c

tegra: enable EC sleep in S3

2015-06-26 20:17:45 +00:00