diff options
| author | V Sowmya <v.sowmya@intel.com> | 2022-07-05 20:49:57 +0530 |
|---|---|---|
| committer | Subrata Banik <subratabanik@google.com> | 2022-07-08 07:22:03 +0000 |
| commit | 4be8d9e80debf56f8ee7998dd4f7f22a65384a04 (patch) | |
| tree | 0b8c62926ee1b731eb8817c067353ef3d0b935c7 | |
| parent | 1793eb4c8a6b31ba4723c268870ebe7e071957f9 (diff) | |
soc/intel/adl: Add support to configure package c-state demotion
This patch adds the support to enable/disable package c-state demotion
feature from the devicetree based on mainboard requirement.
BUG=b:235005582
TEST=Build and boot to verify that the right value has been passed to
the FSP.
Signed-off-by: V Sowmya <v.sowmya@intel.com>
Change-Id: I9e254988bc3d20b9f9e42a605cc0ebd419ab49ad
Reviewed-on: https://review.coreboot.org/c/coreboot/+/65663
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Varshit B Pandya <varshit.b.pandya@intel.com>
Reviewed-by: Reka Norman <rekanorman@chromium.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
| -rw-r--r-- | src/soc/intel/alderlake/chip.h | 7 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 2 |
2 files changed, 9 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h index d01dc73dea..c4de08f75c 100644 --- a/src/soc/intel/alderlake/chip.h +++ b/src/soc/intel/alderlake/chip.h @@ -614,6 +614,13 @@ struct soc_intel_alderlake_config { * Workaround for Intel TA# 723158 to prevent possible display flicker. */ bool usb2_phy_sus_pg_disable; + + /* + * Enable or Disable Package C-state Demotion. + * Default is set to 0. + * Set this to 1 in order to disable Package C-state demotion. + */ + bool disable_package_c_state_demotion; }; typedef struct soc_intel_alderlake_config config_t; diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index 17d0c763fd..cbc7471115 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -965,6 +965,8 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg, s_cfg->C1StateAutoDemotion = !config->disable_c1_state_auto_demotion; s_cfg->VrPowerDeliveryDesign = config->vr_power_delivery_design; + + s_cfg->PkgCStateDemotion = !config->disable_package_c_state_demotion; } static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg, |