/*
   * OpenFirmware helpers for memory drivers
   *
   * Copyright (C) 2012 Texas Instruments, Inc.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef __LINUX_MEMORY_OF_REG_H
  #define __LINUX_MEMORY_OF_REG_H
  
  #if defined(CONFIG_OF) && defined(CONFIG_DDR)
  extern const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
  		struct device *dev);
  extern const struct lpddr2_timings
  	*of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
  	u32 device_type, u32 *nr_frequencies);
  #else
  static inline const struct lpddr2_min_tck
  	*of_get_min_tck(struct device_node *np, struct device *dev)
  {
  	return NULL;
  }
  
  static inline const struct lpddr2_timings
  	*of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
  	u32 device_type, u32 *nr_frequencies)
  {
  	return NULL;
  }
  #endif /* CONFIG_OF && CONFIG_DDR */
  
  #endif /* __LINUX_MEMORY_OF_REG_ */