From 6eda41743eec410f2f927ebe16844cbfa24b08bb Mon Sep 17 00:00:00 2001
From: Raihow Shi <raihow_shi@wistron.corp-partner.google.com>
Date: Fri, 19 Aug 2022 13:38:05 +0800
Subject: mb/google/brask/variants/moli: Support DPTF oem_variables

Enable DPTF oem_variables and override based on CPU match id.

BUG=b:236294162
TEST=emerge-brask coreboot and check the value in odvp0 is correct.

Signed-off-by: Raihow Shi <raihow_shi@wistron.corp-partner.google.com>
Change-Id: Ic935ec42f4de0cbec996da37b44f354978fe4b62
Reviewed-on: https://review.coreboot.org/c/coreboot/+/66907
Reviewed-by: Zhuohao Lee <zhuohao@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 .../google/brya/variants/moli/overridetree.cb      |  4 +++
 src/mainboard/google/brya/variants/moli/ramstage.c | 32 ++++++++++++++++++++++
 2 files changed, 36 insertions(+)

(limited to 'src/mainboard/google/brya')

diff --git a/src/mainboard/google/brya/variants/moli/overridetree.cb b/src/mainboard/google/brya/variants/moli/overridetree.cb
index 9f2c22bda2..e5a9a0439f 100644
--- a/src/mainboard/google/brya/variants/moli/overridetree.cb
+++ b/src/mainboard/google/brya/variants/moli/overridetree.cb
@@ -88,6 +88,10 @@ chip soc/intel/alderlake
 						}
 				}"
 
+				register "oem_data.oem_variables" = "{
+						[0] = 0x1
+				}"
+
 				## Fan Performance Control (Percent, Speed, Noise, Power)
 				register "controls.fan_perf" = "{
 					[0] = {  90, 6700, 220, 2200, },
diff --git a/src/mainboard/google/brya/variants/moli/ramstage.c b/src/mainboard/google/brya/variants/moli/ramstage.c
index 77bf3aea7a..ea863c52f5 100644
--- a/src/mainboard/google/brya/variants/moli/ramstage.c
+++ b/src/mainboard/google/brya/variants/moli/ramstage.c
@@ -5,10 +5,12 @@
 #include <device/device.h>
 #include <device/pci_ids.h>
 #include <device/pci_ops.h>
+#include <device/pci.h>
 #include <drivers/intel/gma/opregion.h>
 #include <ec/google/chromeec/ec.h>
 #include <fw_config.h>
 #include <intelblocks/power_limit.h>
+#include <drivers/intel/dptf/chip.h>
 
 const struct cpu_power_limits limits[] = {
 	/* SKU_ID, TDP (Watts), pl1_min, pl1_max, pl2_min, pl2_max, pl4 */
@@ -26,6 +28,35 @@ const struct system_power_limits sys_limits[] = {
 	{ PCI_DID_INTEL_ADL_P_ID_5, 28, 135 },
 };
 
+static void update_oem_variables(void)
+{
+	struct device *dev = pcidev_path_on_root(SA_DEVFN_ROOT);
+	uint16_t mch_id = dev ? pci_read_config16(dev, PCI_DEVICE_ID) : 0xffff;
+	const struct device *policy_dev = DEV_PTR(dptf_policy);
+	struct drivers_intel_dptf_config *config = policy_dev->chip_info;
+
+	switch (mch_id) {
+	case PCI_DID_INTEL_ADL_P_ID_5:
+		config->oem_data.oem_variables[0] = 0;
+		break;
+
+	case PCI_DID_INTEL_ADL_P_ID_6:
+		config->oem_data.oem_variables[0] = 1;
+		break;
+
+	case PCI_DID_INTEL_ADL_P_ID_7:
+		config->oem_data.oem_variables[0] = 1;
+		break;
+
+	case PCI_DID_INTEL_ADL_P_ID_10:
+		config->oem_data.oem_variables[0] = 1;
+		break;
+
+	default:
+		config->oem_data.oem_variables[0] = 1;
+	}
+}
+
 const struct psys_config psys_config = {
 	.efficiency = 97,
 	.psys_imax_ma = 11000,
@@ -37,4 +68,5 @@ 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);
+	update_oem_variables();
 }
-- 
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