diff options
Diffstat (limited to 'zephyr/projects/rex/src/board_power.c')
| -rw-r--r-- | zephyr/projects/rex/src/board_power.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/zephyr/projects/rex/src/board_power.c b/zephyr/projects/rex/src/board_power.c new file mode 100644 index 0000000000..c7f12d024e --- /dev/null +++ b/zephyr/projects/rex/src/board_power.c @@ -0,0 +1,61 @@ +/* Copyright 2022 The ChromiumOS Authors + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include <zephyr/logging/log.h> +#include <zephyr/drivers/gpio.h> + +#include <ap_power/ap_power.h> +#include <ap_power/ap_power_events.h> +#include <ap_power/ap_power_interface.h> +#include <ap_power_override_functions.h> +#include <power_signals.h> +#include <x86_power_signals.h> + +#include "gpio_signal.h" +#include "gpio/gpio.h" + +LOG_MODULE_DECLARE(ap_pwrseq, LOG_LEVEL_INF); + +#if CONFIG_X86_NON_DSX_PWRSEQ_MTL +#define X86_NON_DSX_MTL_FORCE_SHUTDOWN_TO_MS 50 + +void board_ap_power_force_shutdown(void) +{ + int timeout_ms = X86_NON_DSX_MTL_FORCE_SHUTDOWN_TO_MS; + + /* Turn off PCH_RMSRST to meet tPCH12 */ + power_signal_set(PWR_EC_PCH_RSMRST, 0); + + /* Turn off PRIM load switch. */ + power_signal_set(PWR_EN_PP3300_A, 0); + + /* Wait RSMRST to be off. */ + while (power_signal_get(PWR_RSMRST) && (timeout_ms > 0)) { + k_msleep(1); + timeout_ms--; + }; + + if (power_signal_get(PWR_RSMRST)) { + LOG_WRN("RSMRST_ODL didn't go low! Assuming G3."); + } +} + +void board_ap_power_action_g3_s5(void) +{ + /* Turn on the PP3300_PRIM rail. */ + power_signal_set(PWR_EN_PP3300_A, 1); + + if (!power_wait_signals_timeout( + IN_PGOOD_ALL_CORE, + AP_PWRSEQ_DT_VALUE(wait_signal_timeout))) { + ap_power_ev_send_callbacks(AP_POWER_PRE_INIT); + } +} + +bool board_ap_power_check_power_rails_enabled(void) +{ + return power_signal_get(PWR_EN_PP3300_A); +} +#endif /* CONFIG_X86_NON_DSX_PWRSEQ_MTL */ |