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1/* SPDX-License-Identifier: GPL-2.0-or-later */2/*3 * OpenFirmware helpers for memory drivers4 *5 * Copyright (C) 2012 Texas Instruments, Inc.6 * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>7 */8 9#ifndef __LINUX_MEMORY_OF_REG_H10#define __LINUX_MEMORY_OF_REG_H11 12#if defined(CONFIG_OF) && defined(CONFIG_DDR)13const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,14 struct device *dev);15const struct lpddr2_timings *of_get_ddr_timings(struct device_node *np_ddr,16 struct device *dev,17 u32 device_type, u32 *nr_frequencies);18const struct lpddr3_min_tck *of_lpddr3_get_min_tck(struct device_node *np,19 struct device *dev);20const struct lpddr3_timings *21of_lpddr3_get_ddr_timings(struct device_node *np_ddr,22 struct device *dev, u32 device_type, u32 *nr_frequencies);23 24const struct lpddr2_info *of_lpddr2_get_info(struct device_node *np,25 struct device *dev);26#else27static inline const struct lpddr2_min_tck28 *of_get_min_tck(struct device_node *np, struct device *dev)29{30 return NULL;31}32 33static inline const struct lpddr2_timings34 *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,35 u32 device_type, u32 *nr_frequencies)36{37 return NULL;38}39 40static inline const struct lpddr3_min_tck41 *of_lpddr3_get_min_tck(struct device_node *np, struct device *dev)42{43 return NULL;44}45 46static inline const struct lpddr3_timings47 *of_lpddr3_get_ddr_timings(struct device_node *np_ddr,48 struct device *dev, u32 device_type, u32 *nr_frequencies)49{50 return NULL;51}52 53static inline const struct lpddr2_info54 *of_lpddr2_get_info(struct device_node *np, struct device *dev)55{56 return NULL;57}58#endif /* CONFIG_OF && CONFIG_DDR */59 60#endif /* __LINUX_MEMORY_OF_REG_ */61