diff options
| -rw-r--r-- | src/mainboard/google/brya/variants/xol/Makefile.mk | 1 | ||||
| -rw-r--r-- | src/mainboard/google/brya/variants/xol/ramstage.c | 58 |
2 files changed, 59 insertions, 0 deletions
diff --git a/src/mainboard/google/brya/variants/xol/Makefile.mk b/src/mainboard/google/brya/variants/xol/Makefile.mk index 641e814351..c346b0abc9 100644 --- a/src/mainboard/google/brya/variants/xol/Makefile.mk +++ b/src/mainboard/google/brya/variants/xol/Makefile.mk @@ -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/xol/ramstage.c b/src/mainboard/google/brya/variants/xol/ramstage.c new file mode 100644 index 0000000000..135ac6043b --- /dev/null +++ b/src/mainboard/google/brya/variants/xol/ramstage.c @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ + +#include <baseboard/variants.h> +#include <chip.h> +#include <console/console.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> + +#define DEFAULT_NO_BATTERY_POWER_LIMIT_WATTS 30 + +static bool get_pd_power_watts(u32 *watts) +{ + int rv; + enum usb_chg_type type = USB_CHG_TYPE_UNKNOWN; + u16 volts_mv, current_ma; + + rv = google_chromeec_get_usb_pd_power_info(&type, ¤t_ma, &volts_mv); + if (rv == 0 && type == USB_CHG_TYPE_PD) { + /* Detected USB-PD. Base on max value of adapter */ + *watts = ((u32)current_ma * volts_mv) / 1000000; + return true; + } + + printk(BIOS_WARNING, "Cannot get PD power info. rv = %d, usb_chg_type: %d\n", rv, type); + return false; +} + +void variant_devtree_update(void) +{ + struct soc_power_limits_config *soc_config; + u32 watts; + + soc_config = variant_get_soc_power_limit_config(); + if (soc_config == NULL) + return; + + /* + * If battery is not present or battery level is at or below critical threshold + * to boot a platform with the power efficient configuration, limit PL2 and PL4 + * settings. + */ + if (!google_chromeec_is_battery_present_and_above_critical_threshold()) { + /* Use fixed value when we cannot get the current PD power */ + if (!get_pd_power_watts(&watts)) + watts = DEFAULT_NO_BATTERY_POWER_LIMIT_WATTS; + + printk(BIOS_INFO, "override PL2 and PL4 settings to %d watts\n", watts); + + if (soc_config->tdp_pl2_override > watts) + soc_config->tdp_pl2_override = watts; + + if (soc_config->tdp_pl4 > watts) + soc_config->tdp_pl4 = watts; + } +} |