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rambi: Enable low-power idle

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This should reduce EC power consumption in S3 and S5.

BUG=chrome-os-partner:25377
BRANCH=baytrail
TEST=make sure jtag is not active (not running openocd via servo)
     boot system; suspend system
     wait 60 seconds; should see "Disabling console in deep sleep"
     type on console; should still allow typing
     wait 60 seconds; press spacebar; should still resume from suspend

Change-Id: I47e33e158c1b90077f944a6af4374f39efa68d94
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/184165
Reviewed-by: Alec Berg <alecaberg@chromium.org>
This commit is contained in:
Randall Spangler
2014-01-28 13:14:51 -08:00
committed by chrome-internal-fetch
parent 9785d09fcb
commit cf43a3b7be
2 changed files with 7 additions and 0 deletions
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1
board/rambi/board.h
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@@ -29,6 +29,7 @@
#define CONFIG_KEYBOARD_IRQ_GPIO GPIO_KBD_IRQ_L
#define CONFIG_KEYBOARD_PROTOCOL_8042
#define CONFIG_LED_COMMON
#define CONFIG_LOW_POWER_IDLE
#undef CONFIG_PECI
#define CONFIG_POWER_BUTTON
#define CONFIG_POWER_BUTTON_X86

6
include/config.h
View File

@@ -508,6 +508,12 @@
* Low power idle options. These are disabled by default and all boards that
* want to use low power idle must define it. When using the LFIOSC, the low
* frequency clock will be used to conserve even more power when possible.
*
* GPIOs which need to trigger interrupts in low power idle must specify the
* GPIO_INT_DSLEEP flag in gpio_list[].
*
* Note that for some processors (e.g. LM4), an active JTAG connection will
* prevent the EC from using low-power idle.
*/
#undef CONFIG_LOW_POWER_IDLE
#undef CONFIG_LOW_POWER_USE_LFIOSC