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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-04-14 17:47:01 +0400
committerJason Cooper <jason@lakedaemon.net>2014-04-24 09:00:36 +0400
commit5686a1e5aa436c49187a60052d5885fb1f541ce6 (patch)
tree4cc42805d26105ac25227e3129c7911437d2c417 /include/linux/mbus.h
parent501f928e009760f4987d4630265bb9fff28a6ecc (diff)
downloadlinux-5686a1e5aa436c49187a60052d5885fb1f541ce6.tar.xz
bus: mvebu: pass the coherency availability information at init time
Until now, the mvebu-mbus was guessing by itself whether hardware I/O coherency was available or not by poking into the Device Tree to see if the coherency fabric Device Tree node was present or not. However, on some upcoming SoCs, the presence or absence of the coherency fabric DT node isn't sufficient: in CONFIG_SMP, the coherency can be enabled, but not in !CONFIG_SMP. In order to clean this up, the mvebu_mbus_dt_init() function is extended to get a boolean argument telling whether coherency is enabled or not. Therefore, the logic to decide whether coherency is available or not now belongs to the core SoC code instead of the mvebu-mbus driver itself, which is much better. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1397483228-25625-4-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'include/linux/mbus.h')
-rw-r--r--include/linux/mbus.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mbus.h b/include/linux/mbus.h
index 345b8c53b897..550c88fb0267 100644
--- a/include/linux/mbus.h
+++ b/include/linux/mbus.h
@@ -73,6 +73,6 @@ int mvebu_mbus_del_window(phys_addr_t base, size_t size);
int mvebu_mbus_init(const char *soc, phys_addr_t mbus_phys_base,
size_t mbus_size, phys_addr_t sdram_phys_base,
size_t sdram_size);
-int mvebu_mbus_dt_init(void);
+int mvebu_mbus_dt_init(bool is_coherent);
#endif /* __LINUX_MBUS_H */