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mainboard/google/kahlee: Enable ASPM on PCI express 

We should use active-state power management where possible to reduce
power consumption during normal operation. Enable these options.

Linux does not seem to enable this for AMD, and the Intel code in coreboot
does enable these options.

PCIEXP_COMMON_CLOCK is enabled also, to follow how Intel does it.

BUG=b:110041917
TEST=boot on grunt, see that WiFi and eMMC still run OK

Change-Id: Ia7c711304ffe460a9fb0d4f654a51485958239ea
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://review.coreboot.org/27464
Reviewed-by: Martin Roth <martinroth@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Simon Glass 2018-07-12 12:51:36 -06:00 committed by Martin Roth
parent 35da319b72
commit 82eb80cc8c
1 changed files with 4 additions and 0 deletions
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4
src/mainboard/google/kahlee/Kconfig
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@ -39,6 +39,10 @@ config BOARD_GOOGLE_BASEBOARD_KAHLEE
select DRIVERS_GENERIC_ADAU7002 select DRIVERS_GENERIC_ADAU7002
select DRIVERS_GENERIC_MAX98357A select DRIVERS_GENERIC_MAX98357A
select DRIVERS_I2C_DA7219 select DRIVERS_I2C_DA7219
select PCIEXP_ASPM
select PCIEXP_CLK_PM
select PCIEXP_COMMON_CLOCK
select PCIEXP_L1_SUB_STATE
select HAVE_EM100_SUPPORT select HAVE_EM100_SUPPORT
if BOARD_GOOGLE_BASEBOARD_KAHLEE if BOARD_GOOGLE_BASEBOARD_KAHLEE