diff options
| author | Kapil Porwal <kapilporwal@google.com> | 2023-01-04 22:03:02 +0530 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-01-08 01:24:18 +0000 |
| commit | ae5bc43d3b2df7854de70756e54138c542b8a52e (patch) | |
| tree | e49f23cfc80f85686d768b69bf3d3dad7fe30bb4 /src | |
| parent | ae5ba37a5589c503e902ed769a81c91d0a525d83 (diff) | |
soc/intel/meteorlake: 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.
Port of commit 4be8d9e80deb ("soc/intel/adl: Add support to configure
package c-state demotion")
BUG=none
TEST=Boot to the OS on Google/Rex.
Snippet from FSP log:
[SPEW ] PkgCState Demotion : 0x1
Signed-off-by: Kapil Porwal <kapilporwal@google.com>
Change-Id: I0a4b0b181349ce41035524482add4336cf83a68b
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71654
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/meteorlake/chip.h | 7 | ||||
| -rw-r--r-- | src/soc/intel/meteorlake/fsp_params.c | 1 |
2 files changed, 8 insertions, 0 deletions
diff --git a/src/soc/intel/meteorlake/chip.h b/src/soc/intel/meteorlake/chip.h index ad382e3cf1..dfd5c367e7 100644 --- a/src/soc/intel/meteorlake/chip.h +++ b/src/soc/intel/meteorlake/chip.h @@ -347,6 +347,13 @@ struct soc_intel_meteorlake_config { uint8_t lan_clk; /* + * 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; + + /* * Enable or Disable Skipping MBP HOB. * Default is set to 0 and set to 1 to skip the MBP HOB. */ diff --git a/src/soc/intel/meteorlake/fsp_params.c b/src/soc/intel/meteorlake/fsp_params.c index acf376b9c2..e850eaa259 100644 --- a/src/soc/intel/meteorlake/fsp_params.c +++ b/src/soc/intel/meteorlake/fsp_params.c @@ -642,6 +642,7 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg, /* Enable the energy efficient turbo mode */ s_cfg->EnergyEfficientTurbo = 1; s_cfg->PmcLpmS0ixSubStateEnableMask = get_supported_lpm_mask(); + s_cfg->PkgCStateDemotion = !config->disable_package_c_state_demotion; } |