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-rw-r--r--src/soc/intel/alderlake/chip.h18
-rw-r--r--src/soc/intel/alderlake/fsp_params.c1
2 files changed, 19 insertions, 0 deletions
diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h
index 709ab3cfc5..077a58df79 100644
--- a/src/soc/intel/alderlake/chip.h
+++ b/src/soc/intel/alderlake/chip.h
@@ -71,6 +71,24 @@ enum fivr_voltage_supported {
#define FIVR_ENABLE_ALL_SX (FIVR_ENABLE_S0i1_S0i2 | FIVR_ENABLE_S0i3 | \
FIVR_ENABLE_S3 | FIVR_ENABLE_S4 | FIVR_ENABLE_S5)
+/*
+ * The Max Pkg Cstate
+ * Values 0 - C0/C1, 1 - C2, 2 - C3, 3 - C6, 4 - C7, 5 - C7S, 6 - C8, 7 - C9, 8 - C10,
+ * 254 - CPU Default , 255 - Auto.
+ */
+enum pkgcstate_limit {
+ LIMIT_C0_C1 = 0,
+ LIMIT_C2 = 1,
+ LIMIT_C3 = 2,
+ LIMIT_C6 = 3,
+ LIMIT_C7 = 4,
+ LIMIT_C7S = 5,
+ LIMIT_C8 = 6,
+ LIMIT_C9 = 7,
+ LIMIT_C10 = 8,
+ LIMIT_CPUDEFAULT = 254,
+ LIMIT_AUTO = 255,
+};
struct soc_intel_alderlake_config {
diff --git a/src/soc/intel/alderlake/fsp_params.c b/src/soc/intel/alderlake/fsp_params.c
index 5b0d63108b..6faa39370a 100644
--- a/src/soc/intel/alderlake/fsp_params.c
+++ b/src/soc/intel/alderlake/fsp_params.c
@@ -533,6 +533,7 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg,
s_cfg->PsOnEnable = 1;
/* Enable the energy efficient turbo mode */
s_cfg->EnergyEfficientTurbo = 1;
+ s_cfg->PkgCStateLimit = LIMIT_AUTO;
}
static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg,