crypto: caam - make write transactions bufferable on PPC platforms
Previous change (see "Fixes" tag) to the MCFGR register clears AWCACHE[0] ("bufferable" AXI3 attribute) (which is "1" at POR). This makes all writes non-bufferable, causing a ~ 5% performance drop for PPC-based platforms. Rework previous change such that MCFGR[AWCACHE]=4'b0011 (bufferable + cacheable) for all platforms. Note: For ARM-based platforms, AWCACHE[0] is ignored by the interconnect IP. Cc: <stable@vger.kernel.org> # 4.3+ Fixes: f1096749 ("crypto: caam - fix snooping for write transactions") Signed-off-by: Horia Geant? <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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