From 1c14957254ced5eb8cfb4f20230422d951a9ffac Mon Sep 17 00:00:00 2001
From: Raihow Shi <raihow_shi@wistron.corp-partner.google.com>
Date: Fri, 25 Feb 2022 20:24:01 +0800
Subject: [PATCH] mb/google/brask/variants/moli: Reduce PSysMax to 11 A

Decrease PSysMax from 13.52 A to 11 A for Moli variant according to its power circuitry, implying Psys_Pmax = 11A * 19.5V = 214.5W

BUG=b:215258941

Signed-off-by: Raihow Shi <raihow_shi@wistron.corp-partner.google.com>
Change-Id: I61f4813f3527123a590d80b4a6e49d76ebb71c99
Reviewed-on: https://review.coreboot.org/c/coreboot/+/62374
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
 .../google/brya/variants/moli/Makefile.inc    |  1 +
 .../google/brya/variants/moli/ramstage.c      | 38 +++++++++++++++++++
 2 files changed, 39 insertions(+)
 create mode 100644 src/mainboard/google/brya/variants/moli/ramstage.c

diff --git a/src/mainboard/google/brya/variants/moli/Makefile.inc b/src/mainboard/google/brya/variants/moli/Makefile.inc
index 6c29346470..aa151d64f5 100644
--- a/src/mainboard/google/brya/variants/moli/Makefile.inc
+++ b/src/mainboard/google/brya/variants/moli/Makefile.inc
@@ -3,3 +3,4 @@ bootblock-y += gpio.c
 romstage-y += gpio.c
 
 ramstage-y += gpio.c
+ramstage-y += ramstage.c
diff --git a/src/mainboard/google/brya/variants/moli/ramstage.c b/src/mainboard/google/brya/variants/moli/ramstage.c
new file mode 100644
index 0000000000..5690156c50
--- /dev/null
+++ b/src/mainboard/google/brya/variants/moli/ramstage.c
@@ -0,0 +1,38 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <baseboard/variants.h>
+#include <chip.h>
+#include <device/device.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <ec/google/chromeec/ec.h>
+#include <intelblocks/power_limit.h>
+
+const struct cpu_power_limits limits[] = {
+	/* SKU_ID, TDP (Watts), pl1_min, pl1_max, pl2_min, pl2_max, pl4 */
+	{ PCI_DID_INTEL_ADL_P_ID_10, 15, 15000, 15000,  55000,  55000, 123000 },
+	{ PCI_DID_INTEL_ADL_P_ID_7, 15, 15000, 15000,  55000,  55000, 123000 },
+	{ PCI_DID_INTEL_ADL_P_ID_6, 15, 15000, 15000,  55000,  55000, 123000 },
+	{ PCI_DID_INTEL_ADL_P_ID_5, 28, 28000, 28000,  64000,  64000,  90000 },
+};
+
+const struct system_power_limits sys_limits[] = {
+	/* SKU_ID, TDP (Watts), psys_pl2 (Watts) */
+	{ PCI_DID_INTEL_ADL_P_ID_10, 15, 135 },
+	{ PCI_DID_INTEL_ADL_P_ID_7, 15, 135 },
+	{ PCI_DID_INTEL_ADL_P_ID_6, 15, 135 },
+	{ PCI_DID_INTEL_ADL_P_ID_5, 28, 230 },
+};
+
+const struct psys_config psys_config = {
+	.efficiency = 97,
+	.psys_imax_ma = 11000,
+	.bj_volts_mv = 19500
+};
+
+void variant_devtree_update(void)
+{
+	size_t total_entries = ARRAY_SIZE(limits);
+	variant_update_psys_power_limits(limits, sys_limits, total_entries, &psys_config);
+	variant_update_power_limits(limits, total_entries);
+}