Linux 6.9-rc1
[linux-2.6-microblaze.git] / drivers / memory / of_memory.h
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  * Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
7  */
8
9 #ifndef __LINUX_MEMORY_OF_REG_H
10 #define __LINUX_MEMORY_OF_REG_H
11
12 #if defined(CONFIG_OF) && defined(CONFIG_DDR)
13 const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
14                                             struct device *dev);
15 const struct lpddr2_timings *of_get_ddr_timings(struct device_node *np_ddr,
16                                                 struct device *dev,
17                                                 u32 device_type, u32 *nr_frequencies);
18 const struct lpddr3_min_tck *of_lpddr3_get_min_tck(struct device_node *np,
19                                                    struct device *dev);
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);
23
24 const struct lpddr2_info *of_lpddr2_get_info(struct device_node *np,
25                                              struct device *dev);
26 #else
27 static inline const struct lpddr2_min_tck
28         *of_get_min_tck(struct device_node *np, struct device *dev)
29 {
30         return NULL;
31 }
32
33 static inline const struct lpddr2_timings
34         *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
40 static inline const struct lpddr3_min_tck
41         *of_lpddr3_get_min_tck(struct device_node *np, struct device *dev)
42 {
43         return NULL;
44 }
45
46 static inline const struct lpddr3_timings
47         *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
53 static inline const struct lpddr2_info
54         *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_ */