vf_curve.c File Reference

#include <zephyr/sys/util.h>
#include "aiclk_ppm.h"
#include "vf_curve.h"
#include <zephyr/drivers/misc/bh_fwtable.h>
#include <tenstorrent/msgqueue.h>
#include <tenstorrent/smc_msg.h>
#include "functional_efuse.h"

Macros
#define	FREQ_MARGIN_MAX   300.0F
#define	FREQ_MARGIN_MIN   -300.0F
#define	VOLTAGE_MARGIN_MAX   150.0F
#define	VOLTAGE_MARGIN_MIN   -150.0F
#define	VF_INTERCEPT   738.687863F
#define	VF_COEFF_RO   -9.399314F
#define	VF_COEFF_FREQ   52.359951F
#define	VF_COEFF_RO_SQ   -4.295651F
#define	VF_COEFF_RO_FREQ   0.000000F
#define	VF_COEFF_FREQ_SQ   8.560169F
#define	RO_NORM_MEAN   2582.380952F
#define	RO_NORM_STD   121.320464F
#define	FREQ_NORM_MEAN   1279.761905F
#define	FREQ_NORM_STD   189.567027F
#define	RO_SS_THRESHOLD   2500.0F
#define	FREQ_THRESHOLD_MHZ   1200.0F
#define	SS_MARGIN_MV   45.0F
#define	FF_LOW_FREQ_MARGIN_MV   25.0F
#define	FF_HIGH_FREQ_MARGIN_MV   45.0F
#define	VF_QUADRATIC_COEFF   0.00031395F
#define	VF_LINEAR_COEFF   -0.43953F
#define	VF_CONSTANT   828.83F

Functions
void	InitVFCurve (void)
float	VFCurve (float freq_mhz)
	Calculate the voltage based on the frequency.
static uint8_t	get_voltage_curve_from_freq_handler (const union request *request, struct response *response)
static uint8_t	get_freq_curve_from_voltage_handler (const union request *request, struct response *response)
	REGISTER_MESSAGE (TT_SMC_MSG_GET_VOLTAGE_CURVE_FROM_FREQ, get_voltage_curve_from_freq_handler)
	REGISTER_MESSAGE (TT_SMC_MSG_GET_FREQ_CURVE_FROM_VOLTAGE, get_freq_curve_from_voltage_handler)

Variables
static float	freq_margin_mhz = 300.0F
static float	voltage_margin_mv = 150.0F
static uint32_t	process_RO
static bool	use_process_vf_curve
static bool	process_is_ss
static float	vf_ro_base
static float	vf_freq_linear
static const struct device *const	fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))

Macro Definition Documentation

FF_HIGH_FREQ_MARGIN_MV

#define FF_HIGH_FREQ_MARGIN_MV   45.0F

FF_LOW_FREQ_MARGIN_MV

#define FF_LOW_FREQ_MARGIN_MV   25.0F

FREQ_MARGIN_MAX

#define FREQ_MARGIN_MAX   300.0F

FREQ_MARGIN_MIN

#define FREQ_MARGIN_MIN   -300.0F

FREQ_NORM_MEAN

#define FREQ_NORM_MEAN   1279.761905F

FREQ_NORM_STD

#define FREQ_NORM_STD   189.567027F

FREQ_THRESHOLD_MHZ

#define FREQ_THRESHOLD_MHZ   1200.0F

RO_NORM_MEAN

#define RO_NORM_MEAN   2582.380952F

RO_NORM_STD

#define RO_NORM_STD   121.320464F

RO_SS_THRESHOLD

#define RO_SS_THRESHOLD   2500.0F

SS_MARGIN_MV

#define SS_MARGIN_MV   45.0F

VF_COEFF_FREQ

#define VF_COEFF_FREQ   52.359951F

VF_COEFF_FREQ_SQ

#define VF_COEFF_FREQ_SQ   8.560169F

VF_COEFF_RO

#define VF_COEFF_RO   -9.399314F

VF_COEFF_RO_FREQ

#define VF_COEFF_RO_FREQ   0.000000F

VF_COEFF_RO_SQ

#define VF_COEFF_RO_SQ   -4.295651F

VF_CONSTANT

#define VF_CONSTANT   828.83F

VF_INTERCEPT

#define VF_INTERCEPT   738.687863F

VF_LINEAR_COEFF

#define VF_LINEAR_COEFF   -0.43953F

VF_QUADRATIC_COEFF

#define VF_QUADRATIC_COEFF   0.00031395F

VOLTAGE_MARGIN_MAX

#define VOLTAGE_MARGIN_MAX   150.0F

VOLTAGE_MARGIN_MIN

#define VOLTAGE_MARGIN_MIN   -150.0F

Function Documentation

get_freq_curve_from_voltage_handler()

uint8_t get_freq_curve_from_voltage_handler ( const union request * request, struct response * response )

static

get_voltage_curve_from_freq_handler()

uint8_t get_voltage_curve_from_freq_handler ( const union request * request, struct response * response )

static

InitVFCurve()

void InitVFCurve

(

void

)

REGISTER_MESSAGE() [1/2]

REGISTER_MESSAGE	(	TT_SMC_MSG_GET_FREQ_CURVE_FROM_VOLTAGE	,
		get_freq_curve_from_voltage_handler	)

REGISTER_MESSAGE() [2/2]

REGISTER_MESSAGE	(	TT_SMC_MSG_GET_VOLTAGE_CURVE_FROM_FREQ	,
		get_voltage_curve_from_freq_handler	)

VFCurve()

float VFCurve

(

float

freq_mhz

)

Calculate the voltage based on the frequency.

Parameters

freq_mhz

The frequency in MHz

Returns

The voltage in mV

Variable Documentation

freq_margin_mhz

float freq_margin_mhz = 300.0F

static

fwtable_dev

const struct device* const fwtable_dev = DEVICE_DT_GET(DT_NODELABEL(fwtable))

static

process_is_ss

bool process_is_ss

static

process_RO

uint32_t process_RO

static

use_process_vf_curve

bool use_process_vf_curve

static

vf_freq_linear

float vf_freq_linear

static

vf_ro_base

float vf_ro_base

static

voltage_margin_mv

float voltage_margin_mv = 150.0F

static