diff options
4 files changed, 67 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/mainboard.c b/src/mainboard/google/brya/mainboard.c index 1b9e09a214..388926fbf7 100644 --- a/src/mainboard/google/brya/mainboard.c +++ b/src/mainboard/google/brya/mainboard.c @@ -26,6 +26,13 @@ static void mainboard_init(void *chip_info) base_pads = variant_gpio_table(&base_num); override_pads = variant_gpio_override_table(&override_num); gpio_configure_pads_with_override(base_pads, base_num, override_pads, override_num); + + variant_devtree_update(); +} + +void __weak variant_devtree_update(void) +{ + /* Override dev tree settings per board */ } static void mainboard_dev_init(struct device *dev) diff --git a/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc b/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc index 1d38b77ea0..9665436d28 100644 --- a/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc +++ b/src/mainboard/google/brya/variants/baseboard/brya/Makefile.inc @@ -3,3 +3,4 @@ bootblock-y += gpio.c romstage-y += memory.c ramstage-y += gpio.c +ramstage-y += ramstage.c diff --git a/src/mainboard/google/brya/variants/baseboard/brya/ramstage.c b/src/mainboard/google/brya/variants/baseboard/brya/ramstage.c new file mode 100644 index 0000000000..35cb48835e --- /dev/null +++ b/src/mainboard/google/brya/variants/baseboard/brya/ramstage.c @@ -0,0 +1,44 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <acpi/acpi_device.h> +#include <baseboard/variants.h> +#include <console/console.h> +#include <device/pci_ops.h> +#include <soc/pci_devs.h> + +#include <drivers/intel/dptf/chip.h> + +void variant_update_power_limits(const struct cpu_power_limits *limits, size_t num_entries) +{ + if (!num_entries) + return; + + 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 < num_entries; 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, "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); + } + } +} 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 c938de820d..b992129a55 100644 --- a/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h +++ b/src/mainboard/google/brya/variants/baseboard/include/baseboard/variants.h @@ -22,4 +22,19 @@ int variant_memory_sku(void); bool variant_is_half_populated(void); void variant_update_soc_chip_config(struct soc_intel_alderlake_config *config); +/* Modify devictree settings during ramstage */ +void variant_devtree_update(void); + +struct cpu_power_limits { + uint16_t mchid; + unsigned int pl1_min_power; + unsigned int pl1_max_power; + unsigned int pl2_min_power; + unsigned int pl2_max_power; +}; + +/* Modify Power Limit devictree settings during ramstage */ +void variant_update_power_limits(const struct cpu_power_limits *limits, + size_t num_entries); + #endif /*__BASEBOARD_VARIANTS_H__ */ |