mb/intel/adlrvp: create dynamic power limits mechanism for thermal
Add dynamic power limits selection mechanism for aldrvp board.
BUG=None
BRANCH=None
TEST=Build FW and test on adlrvp with DPTF tool
On adlrvp (282):
Overriding DPTF power limits PL1 (3000, 15000) PL2 (55000, 55000)
On adlrvp (682):
Overriding DPTF power limits PL1 (5000, 45000) PL2 (115000, 115000)
Change-Id: Id1aef0125c6e1e105665172f19bda271e232d94f
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/56880
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
diff --git a/src/mainboard/intel/adlrvp/ramstage.c b/src/mainboard/intel/adlrvp/ramstage.c
new file mode 100644
index 0000000..25a7c5b
--- /dev/null
+++ b/src/mainboard/intel/adlrvp/ramstage.c
@@ -0,0 +1,55 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <acpi/acpi_device.h>
+#include <baseboard/variants.h>
+#include <console/console.h>
+#include <device/pci_ids.h>
+#include <device/pci_ops.h>
+#include <soc/pci_devs.h>
+
+#include <drivers/intel/dptf/chip.h>
+
+const struct cpu_power_limits limits[] = {
+ /* SKU_ID, pl1_min, pl1_max, pl2_min, pl2_max */
+ /* PL2 values are for performance configuration */
+ { PCI_DEVICE_ID_INTEL_ADL_P_ID_7, 3000, 15000, 55000, 55000 },
+ { PCI_DEVICE_ID_INTEL_ADL_P_ID_5, 4000, 28000, 64000, 64000 },
+ { PCI_DEVICE_ID_INTEL_ADL_P_ID_3, 5000, 45000, 115000, 115000 },
+};
+
+void variant_update_power_limits(void)
+{
+ const struct device_path policy_path[] = {
+ { .type = DEVICE_PATH_PCI, .pci.devfn = SA_DEVFN_DPTF},
+ { .type = DEVICE_PATH_GENERIC, .generic.id = 0}
+ };
+
+ const struct device *policy_dev = find_dev_nested_path(pci_root_bus(),
+ policy_path, ARRAY_SIZE(policy_path));
+ if (!policy_dev)
+ return;
+
+ struct drivers_intel_dptf_config *config = policy_dev->chip_info;
+
+ uint16_t mchid = pci_s_read_config16(PCI_DEV(0, 0, 0), PCI_DEVICE_ID);
+
+ for (size_t i = 0; i < ARRAY_SIZE(limits); i++) {
+ if (mchid == limits[i].mchid) {
+ struct dptf_power_limits *settings = &config->controls.power_limits;
+ settings->pl1.min_power = limits[i].pl1_min_power;
+ settings->pl1.max_power = limits[i].pl1_max_power;
+ settings->pl2.min_power = limits[i].pl2_min_power;
+ settings->pl2.max_power = limits[i].pl2_max_power;
+ printk(BIOS_INFO, "sumeet: Overriding DPTF power limits PL1 (%u, %u) PL2 (%u, %u)\n",
+ limits[i].pl1_min_power,
+ limits[i].pl1_max_power,
+ limits[i].pl2_min_power,
+ limits[i].pl2_max_power);
+ }
+ }
+}
+
+void variant_devtree_update(void)
+{
+ variant_update_power_limits();
+}