linux/drivers/memory/of_memory.h
Dmitry Osipenko 38322cf423 memory: Add LPDDR2-info helpers
Add common helpers for reading and parsing standard LPDDR2 configuration
properties.

Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20211006224659.21434-9-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
2021-10-15 09:52:47 +02:00

61 lines
1.7 KiB
C

/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* OpenFirmware helpers for memory drivers
*
* Copyright (C) 2012 Texas Instruments, Inc.
* Copyright (C) 2020 Krzysztof Kozlowski <krzk@kernel.org>
*/
#ifndef __LINUX_MEMORY_OF_REG_H
#define __LINUX_MEMORY_OF_REG_H
#if defined(CONFIG_OF) && defined(CONFIG_DDR)
const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
struct device *dev);
const struct lpddr2_timings *of_get_ddr_timings(struct device_node *np_ddr,
struct device *dev,
u32 device_type, u32 *nr_frequencies);
const struct lpddr3_min_tck *of_lpddr3_get_min_tck(struct device_node *np,
struct device *dev);
const struct lpddr3_timings *
of_lpddr3_get_ddr_timings(struct device_node *np_ddr,
struct device *dev, u32 device_type, u32 *nr_frequencies);
const struct lpddr2_info *of_lpddr2_get_info(struct device_node *np,
struct device *dev);
#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;
}
static inline const struct lpddr3_min_tck
*of_lpddr3_get_min_tck(struct device_node *np, struct device *dev)
{
return NULL;
}
static inline const struct lpddr3_timings
*of_lpddr3_get_ddr_timings(struct device_node *np_ddr,
struct device *dev, u32 device_type, u32 *nr_frequencies)
{
return NULL;
}
static inline const struct lpddr2_info
*of_lpddr2_get_info(struct device_node *np, struct device *dev)
{
return NULL;
}
#endif /* CONFIG_OF && CONFIG_DDR */
#endif /* __LINUX_MEMORY_OF_REG_ */