soc/intel/alderlake: Add support for power cycle and SLP signal duration

The UPDs for PM power cycle duration and SLP_* signal durations are all
identical to Tiger Lake, so add similar support, but use enums instead
of comments to represent the durations symbolically.

BUG=b:184799383

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I4a531f042658894bcbc6a76eff453c06e90d66b0
Reviewed-on: https://review.coreboot.org/c/coreboot/+/57891
Reviewed-by: EricR Lai <ericr_lai@compal.corp-partner.google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2 files changed, 80 insertions, 0 deletions

diff --git a/src/soc/intel/alderlake/chip.h b/src/soc/intel/alderlake/chip.h
index b9be02bf1db2..47f6d59bc6e2 100644
--- a/src/soc/intel/alderlake/chip.h
+++ b/src/soc/intel/alderlake/chip.h
@@ -438,6 +438,55 @@ struct soc_intel_alderlake_config {
 	struct vr_config domain_vr_config[NUM_VR_DOMAINS];
 
 	uint16_t MaxDramSpeed;
+
+	enum {
+		SLP_S3_ASSERTION_DEFAULT,
+		SLP_S3_ASSERTION_60_US,
+		SLP_S3_ASSERTION_1_MS,
+		SLP_S3_ASSERTION_50_MS,
+		SLP_S3_ASSERTION_2_S,
+	} pch_slp_s3_min_assertion_width;
+
+	enum {
+		SLP_S4_ASSERTION_DEFAULT,
+		SLP_S4_ASSERTION_1S,
+		SLP_S4_ASSERTION_2S,
+		SLP_S4_ASSERTION_3S,
+		SLP_S4_ASSERTION_4S,
+	} pch_slp_s4_min_assertion_width;
+
+	enum {
+		SLP_SUS_ASSERTION_DEFAULT,
+		SLP_SUS_ASSERTION_0_MS,
+		SLP_SUS_ASSERTION_500_MS,
+		SLP_SUS_ASSERTION_1_S,
+		SLP_SUS_ASSERTION_4_S,
+	} pch_slp_sus_min_assertion_width;
+
+	enum {
+		SLP_A_ASSERTION_DEFAULT,
+		SLP_A_ASSERTION_0_MS,
+		SLP_A_ASSERTION_4_S,
+		SLP_A_ASSERTION_98_MS,
+		SLP_A_ASSERTION_2_S,
+	} pch_slp_a_min_assertion_width;
+
+	/*
+	 * PCH PM Reset Power Cycle Duration
+	 * NOTE: Duration programmed in the PchPmPwrCycDur should never be smaller than the
+	 * stretch duration programmed in the following registers:
+	 *  - GEN_PMCON_A.SLP_S3_MIN_ASST_WDTH (PchPmSlpS3MinAssert)
+	 *  - GEN_PMCON_A.S4MAW (PchPmSlpS4MinAssert)
+	 *  - PM_CFG.SLP_A_MIN_ASST_WDTH (PchPmSlpAMinAssert)
+	 *  - PM_CFG.SLP_LAN_MIN_ASST_WDTH
+	 */
+	enum {
+		POWER_CYCLE_DURATION_DEFAULT,
+		POWER_CYCLE_DURATION_1S,
+		POWER_CYCLE_DURATION_2S,
+		POWER_CYCLE_DURATION_3S,
+		POWER_CYCLE_DURATION_4S,
+	} pch_reset_power_cycle_duration;
 };
 
 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 584364b81eef..a92883cb5022 100644
--- a/src/soc/intel/alderlake/fsp_params.c
+++ b/src/soc/intel/alderlake/fsp_params.c
@@ -13,6 +13,7 @@
 #include <option.h>
 #include <intelblocks/irq.h>
 #include <intelblocks/lpss.h>
+#include <intelblocks/pmclib.h>
 #include <intelblocks/xdci.h>
 #include <intelpch/lockdown.h>
 #include <intelblocks/tcss.h>
@@ -618,6 +619,36 @@ static void fill_fsps_misc_power_params(FSP_S_CONFIG *s_cfg,
 		fill_vr_domain_config(s_cfg, i, &config->domain_vr_config[i]);
 
 	s_cfg->LpmStateEnableMask = get_supported_lpm_mask();
+
+	/* Apply minimum assertion width settings */
+	if (config->pch_slp_s3_min_assertion_width == SLP_S3_ASSERTION_DEFAULT)
+		s_cfg->PchPmSlpS3MinAssert = SLP_S3_ASSERTION_50_MS;
+	else
+		s_cfg->PchPmSlpS3MinAssert = config->pch_slp_s3_min_assertion_width;
+
+	if (config->pch_slp_s4_min_assertion_width == SLP_S4_ASSERTION_DEFAULT)
+		s_cfg->PchPmSlpS4MinAssert = SLP_S4_ASSERTION_1S;
+	else
+		s_cfg->PchPmSlpS4MinAssert = config->pch_slp_s4_min_assertion_width;
+
+	if (config->pch_slp_sus_min_assertion_width == SLP_SUS_ASSERTION_DEFAULT)
+		s_cfg->PchPmSlpSusMinAssert = SLP_SUS_ASSERTION_4_S;
+	else
+		s_cfg->PchPmSlpSusMinAssert = config->pch_slp_sus_min_assertion_width;
+
+	if (config->pch_slp_a_min_assertion_width == SLP_A_ASSERTION_DEFAULT)
+		s_cfg->PchPmSlpAMinAssert = SLP_A_ASSERTION_2_S;
+	else
+		s_cfg->PchPmSlpAMinAssert = config->pch_slp_a_min_assertion_width;
+
+	unsigned int power_cycle_duration = config->pch_reset_power_cycle_duration;
+	if (power_cycle_duration == POWER_CYCLE_DURATION_DEFAULT)
+		power_cycle_duration = POWER_CYCLE_DURATION_4S;
+
+	s_cfg->PchPmPwrCycDur = get_pm_pwr_cyc_dur(s_cfg->PchPmSlpS4MinAssert,
+						   s_cfg->PchPmSlpS3MinAssert,
+						   s_cfg->PchPmSlpAMinAssert,
+						   power_cycle_duration);
 }
 
 static void fill_fsps_irq_params(FSP_S_CONFIG *s_cfg,