[coreboot-gerrit] Change in coreboot[master]: mb/intel/adlrvp: Disable PM Timer for ADL-N

[Felix Held (Code Review)]

Felix Held has submitted this change. ( https://review.coreboot.org/c/coreboot/+/62915 )

Change subject: mb/intel/adlrvp: Disable PM Timer for ADL-N
......................................................................

mb/intel/adlrvp: Disable PM Timer for ADL-N

Keeping the PM timer enabled will disqualify an ADL system from entering
S0i3, and will also cause an increase in power during suspend states.
The PM timer is not required for ADL-N boards, therefore disabling it.

BRANCH=NONE
TEST=Build and boot ADL-N RVP. Verify system is entering S0i3 state.
localhost ~ # cat /sys/kernel/debug/pmc_core/substate_residencies
Substate   Residency
S0i2.0     0
S0i3.0     13196801

Signed-off-by: Usha P 
Change-Id: I44651bf55df8e71a0a5a9a33ecbb8322ecd18575
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62915
Tested-by: build bot (Jenkins) 
Reviewed-by: Reka Norman 
---
M src/mainboard/intel/adlrvp/Kconfig
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Reka Norman: Looks good to me, approved

diff --git a/src/mainboard/intel/adlrvp/Kconfig b/src/mainboard/intel/adlrvp/Kconfig
index 20c37a0..82ba5e4 100644
--- a/src/mainboard/intel/adlrvp/Kconfig
+++ b/src/mainboard/intel/adlrvp/Kconfig
@@ -160,6 +160,9 @@
 config DRIVER_TPM_SPI_BUS
    default 0x2 if BOARD_INTEL_ADLRVP_M_EXT_EC

+config USE_PM_ACPI_TIMER
+	default n if BOARD_INTEL_ADLRVP_N_EXT_EC || BOARD_INTEL_ADLRVP_N
+
 config TPM_TIS_ACPI_INTERRUPT
    int
    default 67 if BOARD_INTEL_ADLRVP_M_EXT_EC  # GPE0_DW2_3 (GPP_E3)