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eve: Increase the minimum battery level needed for try source

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To improve robustness of booting under low battery condidtions,
increased the thershold CONFIG_USB_PD_TRY_SRC_MIN_BATT_SOC from 1 to
2. The effect of this change is that try srouce mode will be disabled
until the battery has >= 2% of charge. This prevents the port from
disconnecting, when a USB PD charge is connected under this low
battery condition.

BUG=b:36093023
BRANCH=None
TEST=Verfied that when the battery charge was  < 2% the USB PD state
machine on Eve did not go to state 15 (SRC_DISCONNECTED) after
initially attaching as a sink device. When the battery charge is >= 2%
then observed that the transition to state 15 happens.

Change-Id: I50123bc4f98e7a8dc793d9a9844d1d9961fde121
Signed-off-by: Scott <scollyer@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/452739
Commit-Ready: Scott Collyer <scollyer@chromium.org>
Tested-by: Scott Collyer <scollyer@chromium.org>
Reviewed-by: Duncan Laurie <dlaurie@google.com>
This commit is contained in:
Scott
2017-03-09 11:03:36 -08:00
committed by chrome-bot
parent b0b9a80125
commit 4c8445626a
1 changed files with 2 additions and 0 deletions
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2
board/eve/board.h
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@@ -160,6 +160,8 @@
#define CONFIG_USB_PD_TCPM_ANX74XX
#define CONFIG_USB_PD_TCPM_TCPCI
#define CONFIG_USB_PD_TRY_SRC
#undef CONFIG_USB_PD_TRY_SRC_MIN_BATT_SOC
#define CONFIG_USB_PD_TRY_SRC_MIN_BATT_SOC 2
#define CONFIG_USB_POWER_DELIVERY
#define CONFIG_USBC_SS_MUX
#define CONFIG_USBC_SS_MUX_DFP_ONLY