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The early revisions of Armada 375 SOCs (Z1 stepping) have a bug in the I/O coherency unit that prevents using the normal method for the I/O coherency barrier. The recommended workaround is to use a XOR memset transfer to act as the I/O coherency barrier. This involves "borrowing" a XOR engine, which gets disabled in the Device Tree so the normal XOR driver doesn't use it. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Link: https://lkml.kernel.org/r/1397483228-25625-8-git-send-email-thomas.petazzoni@free-electrons.com Signed-off-by: Jason Cooper <jason@lakedaemon.net> |
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.. | ||
include/mach | ||
armada-370-xp.h | ||
board-t5325.c | ||
board-v7.c | ||
board.h | ||
coherency_ll.S | ||
coherency.c | ||
coherency.h | ||
common.h | ||
dove.c | ||
headsmp.S | ||
hotplug.c | ||
Kconfig | ||
kirkwood-pm.c | ||
kirkwood-pm.h | ||
kirkwood.c | ||
kirkwood.h | ||
Makefile | ||
mvebu-soc-id.c | ||
mvebu-soc-id.h | ||
platsmp.c | ||
pmsu.c | ||
pmsu.h | ||
system-controller.c |