There's no DMA at all, the device type memory attribute can ensure the
operations order and relaxed version imply compiler barrier, so we are safe
to use relaxed version to improve the performance a bit.
Signed-off-by: NJisheng Zhang <jszhang@marvell.com>
Acked-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Link: https://lkml.kernel.org/r/1415773374-4629-2-git-send-email-jszhang@marvell.comSigned-off-by: NJason Cooper <jason@lakedaemon.net>

This adds an irqchip driver and corresponding devicetree binding for the
secondary interrupt controllers based on Synopsys DesignWare IP dw_apb_ictl.
Signed-off-by: NSebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Reviewed-by: NMark Rutland <mark.rutland@arm.com>
Reviewed-by: NJisheng Zhang <jszhang@marvell.com>
Reviewed-by: NThomas Gleixner <tglx@linutronix.de>