mb/google/brya/var/baseboard/brask: Add power limits functions

Copy function variant_update_power_limits from brya to set power limits.

Add function variant_update_psys_power_limits and copy the algorithm
from puff. Add structure system_power_limits and psys_config to define
and configure the psys power limits.

BUG=b:193864533
BRANCH=none
TEST=Build pass

Signed-off-by: Alan Huang <alan-huang@quanta.corp-partner.google.com>
Change-Id: I183017068e9c78acb9fa7073c53593d304ba9248
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58241
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>

1 files changed, 32 insertions, 0 deletions

diff --git a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
index 3e0fd05105..b3a10e0a64 100644
--- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
+++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h
@@ -37,8 +37,40 @@ struct cpu_power_limits {
 	unsigned int pl4_power;
 };
 
+struct system_power_limits {
+	uint16_t mchid;
+	u8 cpu_tdp;
+	/* PsysPL2 in Watts */
+	unsigned int psys_pl2_power;
+};
+
+struct psys_config {
+	/*
+	 * The efficiency of type-c chargers
+	 * For example, 'efficiency = 97' means setting 97% of max power to account for
+	 * cable loss and FET Rdson loss in the path from the source.
+	 */
+	unsigned int efficiency;
+
+	/* The maximum current maps to the Psys signal */
+	unsigned int psys_imax_ma;
+
+	/* The voltage of barrel jack */
+	unsigned int bj_volts_mv;
+};
+
 /* Modify Power Limit devictree settings during ramstage */
 void variant_update_power_limits(const struct cpu_power_limits *limits,
 				 size_t num_entries);
 
+
+/*
+ * Modify Power Limit and PsysPL devictree settings during ramstage.
+ * Note, this function must be called in front of calling variant_update_power_limits.
+ */
+void variant_update_psys_power_limits(const struct cpu_power_limits *limits,
+					const struct system_power_limits *sys_limits,
+					size_t num_entries,
+					const struct psys_config *config);
+
 #endif /*__BASEBOARD_VARIANTS_H__ */