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7c304d7e24
Commit e6b42eb "memory: emif: add device tree support to emif driver"
added drivers/memory/of_memory.c, which references tables defined in
lib/jedec_ddr_data.c. of_memory.c is compiled when CONFIG_OF, whereas
jedec_ddr_data.c is compiled when CONFIG_DDR. This breaks the build
when CONFIG_OF is defined but not CONFIG_DDR:
drivers/built-in.o: In function `of_get_ddr_timings':
drivers/memory/of_memory.c:138: undefined reference to `lpddr2_jedec_timings'
drivers/built-in.o: In function `of_get_min_tck':
drivers/memory/of_memory.c:62: undefined reference to `lpddr2_jedec_min_tck'
make: *** [vmlinux] Error 1
To solve this, only compile of_memory.c when CONFIG_OF && CONFIG_DDR,
otherwise, stub out the functions.
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/*
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* OpenFirmware helpers for memory drivers
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*
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* Copyright (C) 2012 Texas Instruments, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __LINUX_MEMORY_OF_REG_H
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#define __LINUX_MEMORY_OF_REG_H
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#if defined(CONFIG_OF) && defined(CONFIG_DDR)
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extern const struct lpddr2_min_tck *of_get_min_tck(struct device_node *np,
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struct device *dev);
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extern const struct lpddr2_timings
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*of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
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u32 device_type, u32 *nr_frequencies);
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#else
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static inline const struct lpddr2_min_tck
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*of_get_min_tck(struct device_node *np, struct device *dev)
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{
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return NULL;
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}
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static inline const struct lpddr2_timings
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*of_get_ddr_timings(struct device_node *np_ddr, struct device *dev,
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u32 device_type, u32 *nr_frequencies)
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{
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return NULL;
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}
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#endif /* CONFIG_OF && CONFIG_DDR */
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#endif /* __LINUX_MEMORY_OF_REG_ */
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