From: Horia Geant? <horia.geanta@freescale.com>
Date: Fri, 17 Jul 2015 13:54:52 +0000 (+0300)
Subject: crypto: caam - fix snooping for write transactions
X-Git-Tag: omap-for-v4.3/fixes-merge-window~29^2~110
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f109674951440912b645de2761d5d851e261af98;p=pandora-kernel.git

crypto: caam - fix snooping for write transactions

HW coherency won't work properly for CAAM write transactions
if AWCACHE is left to default (POR) value - 4'b0001.
It has to be programmed to 4'b0010, i.e. AXI3 Cacheable bit set.

For platforms that have HW coherency support:
-PPC-based: the update has no effect; CAAM coherency already works
due to the IOMMU (PAMU) driver setting the correct memory coherency
attributes
-ARM-based: the update fixes cache coherency issues,
since IOMMU (SMMU) driver is not programmed to behave similar to PAMU

Signed-off-by: Horia Geant? <horia.geanta@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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