diff options
| author | Anil Kumar <anil.kumar.k@intel.com> | 2023-02-09 16:55:57 -0800 |
|---|---|---|
| committer | Nick Vaccaro <nvaccaro@google.com> | 2023-02-15 17:57:41 +0000 |
| commit | e822fb358764b78e7d7d02c024ae6a285632ddf9 (patch) | |
| tree | efecaf89ff7c3806170b6ef1019d4d3142a26aa1 /src | |
| parent | ab0a19c9e6b050dad0aaf02f14c1a461de0ec2a0 (diff) | |
soc/intel/alderlake: Disable package C-state demotion for Raptor Lake
While executing S0ix tests on Raptor Lake boards, we observed CPU fails
to enter suspend state, causing failure.
As a workaround, disable package C-state demotion, till this issue
is fixed in ucode.
BUG=268296760
BRANCH=firmware-brya-14505.B
TEST=Boot and verified that S0ix issue is resolved.
Signed-off-by: Anil Kumar <anil.kumar.k@intel.com>
Change-Id: Ie50e1024f4118d82d2ad762b54fa722c43990d12
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72942
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/intel/alderlake/fsp_params.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c index 4117c2215a..42475c4561 100644 --- a/src/soc/intel/alderlake/fsp_params.c +++ b/src/soc/intel/alderlake/fsp_params.c @@ -937,6 +937,7 @@ static void fill_fsps_cpu_pcie_params(FSP_S_CONFIG *s_cfg, static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg, const struct soc_intel_alderlake_config *config) { + u32 cpu_id = cpu_get_cpuid(); /* Skip setting D0I3 bit for all HECI devices */ s_cfg->DisableD0I3SettingForHeci = 1; /* @@ -1005,7 +1006,11 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg, s_cfg->VrPowerDeliveryDesign = config->vr_power_delivery_design; - s_cfg->PkgCStateDemotion = !config->disable_package_c_state_demotion; + /* FIXME: Disable package C state demotion on Raptorlake as a W/A for S0ix issues */ + if ((cpu_id == CPUID_RAPTORLAKE_P_J0) || (cpu_id == CPUID_RAPTORLAKE_P_Q0)) + s_cfg->PkgCStateDemotion = 0; + else + s_cfg->PkgCStateDemotion = !config->disable_package_c_state_demotion; } static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg, |