On Thu, May 15, 2014 at 10:18:39AM +0100, Thomas Petazzoni wrote: > The Marvell Armada 375 and Armada 38x SOCs, which use the Cortex-A9 > CPU core, the PL310 cache and the Marvell PCIe hardware block are > affected a L2/PCIe deadlock caused by a system erratum when hardware > I/O coherency is used. > > This deadlock can be avoided by mapping the PCIe memory areas as > strongly-ordered (note: MT_UNCACHED is strongly-ordered), and by > removing the outer cache sync done in software. This is done in this > patch, thanks to the new bits of infrastructure added in 'ARM: mm: > allow sub-architectures to override PCI I/O memory type' and 'ARM: mm: > add support for HW coherent systems in PL310' respectively. > > Signed-off-by: Thomas Petazzoni <[email protected]>
Acked-by: Catalin Marinas <[email protected]> -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
