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authorHai Nguyen Pham <hai.pham.ud@renesas.com>2019-09-04 14:08:02 +0200
committerJoerg Roedel <jroedel@suse.de>2019-09-05 13:03:34 +0200
commit3623002f0f761efd7eb38cfa5af1d2319365a8fd (patch)
treed2caed8827d6db6549ce330227c7b014c993c40f /drivers/iommu/Makefile
parent5ca54fdc9b1e6a8b3c03eaa8d1b6b4f406e90ad8 (diff)
iommu/ipmmu-vmsa: Disable cache snoop transactions on R-Car Gen3
According to the Hardware Manual Errata for Rev. 1.50 of April 10, 2019, cache snoop transactions for page table walk requests are not supported on R-Car Gen3. Hence, this patch removes setting these fields in the IMTTBCR register, since it will have no effect, and adds comments to the register bit definitions, to make it clear they apply to R-Car Gen2 only. Signed-off-by: Hai Nguyen Pham <hai.pham.ud@renesas.com> [geert: Reword, add comments] Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Signed-off-by: Joerg Roedel <jroedel@suse.de>
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