diff options
| author | MAULIK V VAGHELA <maulik.v.vaghela@intel.com> | 2022-03-03 13:07:57 +0530 |
|---|---|---|
| committer | Nick Vaccaro <nvaccaro@google.com> | 2022-03-15 18:11:16 +0000 |
| commit | 99356386a6e4f976c0070723611fd9f7a286ba3e (patch) | |
| tree | c2b064f534ce66054a178b019578b9a67bf7ea97 /src/soc | |
| parent | 215a97ee1c4cd87b266d63e32bf0b379e18fe849 (diff) | |
soc/intel/alderlake: Allow mainboard to configure c1-state auto-demotion
FSP has a parameter to enable/disable c1-state autodemotion feature.
Boards/Baseboard can choose to use this feature as per requirement.
This patch hooks up this parameter to devicetree
BUG=b:221876248
BRANCH=firmware-brya-14505.B
TEST=Check code compiles and correct value has been passed to FSP.
Change-Id: I2d7839d8fecd7b5403f52f3926d1d0bc06728ed9
Signed-off-by: Maulik V Vaghela <maulik.v.vaghela@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62629
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/alderlake/chip.h | 6 | ||||
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 2 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h index e7e2f20805..a69e6455ee 100644 --- a/src/soc/intel/alderlake/chip.h +++ b/src/soc/intel/alderlake/chip.h @@ -560,6 +560,12 @@ struct soc_intel_alderlake_config { /* Energy-Performance Preference (HWP feature) */ bool enable_energy_perf_pref; uint8_t energy_perf_pref_value; + + /* + * Enable or Disable C1 Cstate Demotion. + * Default 0. Set this to 1 in order to disable C state demotion. + */ + bool disable_c1_state_auto_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 90ecf86d05..f0e0ac2c6f 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -717,6 +717,8 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg, /* PsysPmax is in unit of 1/8 Watt */ s_cfg->PsysPmax = config->platform_pmax * 8; } + + s_cfg->C1StateAutoDemotion = !config->disable_c1_state_auto_demotion; } static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg, |