1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * OpenFirmware helpers for memory drivers 4 * 5 * Copyright (C) 2012 Texas Instruments, Inc. 6 */ 7 8 #ifndef __LINUX_MEMORY_OF_REG_H 9 #define __LINUX_MEMORY_OF_REG_H 10 11 #if defined(CONFIG_OF) && defined(CONFIG_DDR) 12 extern const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np, 13 struct device *dev); 14 extern const struct lpddr2_timings 15 *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev, 16 u32 device_type, u32 *nr_frequencies); 17 #else 18 static inline const struct lpddr2_min_tck 19 *of_get_min_tck(struct device_node *np, struct device *dev) 20 { 21 return NULL; 22 } 23 24 static inline const struct lpddr2_timings 25 *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev, 26 u32 device_type, u32 *nr_frequencies) 27 { 28 return NULL; 29 } 30 #endif /* CONFIG_OF && CONFIG_DDR */ 31 32 #endif /* __LINUX_MEMORY_OF_REG_ */ 33