ddrmc-vf610-calibration.h
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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* ddrmc DDR3 calibration code for NXP's VF610
*
* Copyright (C) 2018 DENX Software Engineering
* Lukasz Majewski, DENX Software Engineering, lukma@denx.de
*
*/
#ifndef __DDRMC_VF610_CALIBRATOIN_H_
#define __DDRMC_VF610_CALIBRATOIN_H_
/*
* Number of "samples" in the calibration bitmap
* to be considered during calibration.
*/
#define N_SAMPLES 3
/*
* Constants to indicate if we are looking for a rising or
* falling edge in the calibration bitmap
*/
enum edge {
FALLING_EDGE = 1,
RISING_EDGE
};
/*
* The max number of delay elements when DQS to DQ setting
*/
#define DDRMC_DQS_DQ_MAX_DELAY 0xFF
/**
* ddrmc_calibration - Vybrid's (VF610) DDR3 calibration code
*
* This function is calculating proper memory controller values
* during run time.
*
* @param ddrmr_regs - memory controller registers
*
* @return 0 on success, otherwise error code
*/
int ddrmc_calibration(struct ddrmr_regs *ddrmr);
#endif /* __DDRMC_VF610_CALIBRATOIN_H_ */