1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * OpenFirmware helpers for memory drivers
5 * Copyright (C) 2012 Texas Instruments, Inc.
6 * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
9 #ifndef __LINUX_MEMORY_OF_REG_H
10 #define __LINUX_MEMORY_OF_REG_H
12 #if defined(CONFIG_OF) && defined(CONFIG_DDR)
13 const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
15 const struct lpddr2_timings *of_get_ddr_timings(struct device_node *np_ddr,
17 u32 device_type, u32 *nr_frequencies);
18 const struct lpddr3_min_tck *of_lpddr3_get_min_tck(struct device_node *np,
20 const struct lpddr3_timings *
21 of_lpddr3_get_ddr_timings(struct device_node *np_ddr,
22 struct device *dev, u32 device_type, u32 *nr_frequencies);
24 static inline const struct lpddr2_min_tck
25 *of_get_min_tck(struct device_node *np, struct device *dev)
30 static inline const struct lpddr2_timings
31 *of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
32 u32 device_type, u32 *nr_frequencies)
37 static inline const struct lpddr3_min_tck
38 *of_lpddr3_get_min_tck(struct device_node *np, struct device *dev)
43 static inline const struct lpddr3_timings
44 *of_lpddr3_get_ddr_timings(struct device_node *np_ddr,
45 struct device *dev, u32 device_type, u32 *nr_frequencies)
49 #endif /* CONFIG_OF && CONFIG_DDR */
51 #endif /* __LINUX_MEMORY_OF_REG_ */