voltage.h

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/*
 * Copyright (c) 2024 Tenstorrent AI ULC
 * SPDX-License-Identifier: Apache-2.0
 */
 
#ifndef VOLTAGE_H
#define VOLTAGE_H
 
#include <stdint.h>
 
typedef enum {
        VoltageReqAiclk,
        VoltageReqL2CPU,
        VoltageReqCount,
} VoltageRequestor;
 
typedef struct {
        uint32_t curr_voltage;                 /* in mV */
        uint32_t targ_voltage;                 /* in mV */
        uint32_t vdd_min;                      /* in mV */
        uint32_t vdd_max;                      /* in mV */
        uint32_t forced_voltage;               /* in mV, a value of zero means disabled. */
        uint32_t req_voltage[VoltageReqCount]; /* in mV */
} VoltageArbiter;
 
extern VoltageArbiter voltage_arbiter;
 
void VoltageChange(void);
void VoltageArbRequest(VoltageRequestor req, uint32_t voltage);
void CalculateTargVoltage(void);
int InitVoltagePPM(void);
uint8_t ForceVdd(uint32_t voltage);
 
#endif