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author | Magnus Damm <damm+renesas@opensource.se> | 2016-02-29 14:33:09 (GMT) |
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committer | Joerg Roedel <jroedel@suse.de> | 2016-03-03 09:59:17 (GMT) |
commit | d4e42e72e7d121be904087be9df9842b35757588 (patch) | |
tree | 9d3ededf9ccde80c15b36ce318ec391a403d90cc /Documentation/devicetree/bindings/iommu | |
parent | 9015ba456c432023630a1a2ce13049d84fd5b7a3 (diff) | |
download | linux-d4e42e72e7d121be904087be9df9842b35757588.tar.xz |
iommu/ipmmu-vmsa: Add r8a7795 DT binding
Update the IPMMU DT binding documentation to include the r8a7795 compat
string as well as the "renesas,ipmmu-main" property that on r8a7795 will
be used to describe the topology and the relationship between the various
cache IPMMU instances and the main IPMMU.
Signed-off-by: Magnus Damm <damm+renesas@opensource.se>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'Documentation/devicetree/bindings/iommu')
-rw-r--r-- | Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt b/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt index 48ffb38..3ed027c 100644 --- a/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt +++ b/Documentation/devicetree/bindings/iommu/renesas,ipmmu-vmsa.txt @@ -7,23 +7,34 @@ connected to the IPMMU through a port called micro-TLB. Required Properties: - - compatible: Must contain SoC-specific and generic entries from below. + - compatible: Must contain SoC-specific and generic entry below in case + the device is compatible with the R-Car Gen2 VMSA-compatible IPMMU. - "renesas,ipmmu-r8a73a4" for the R8A73A4 (R-Mobile APE6) IPMMU. - "renesas,ipmmu-r8a7790" for the R8A7790 (R-Car H2) IPMMU. - "renesas,ipmmu-r8a7791" for the R8A7791 (R-Car M2-W) IPMMU. - "renesas,ipmmu-r8a7793" for the R8A7793 (R-Car M2-N) IPMMU. - "renesas,ipmmu-r8a7794" for the R8A7794 (R-Car E2) IPMMU. + - "renesas,ipmmu-r8a7795" for the R8A7795 (R-Car H3) IPMMU. - "renesas,ipmmu-vmsa" for generic R-Car Gen2 VMSA-compatible IPMMU. - reg: Base address and size of the IPMMU registers. - interrupts: Specifiers for the MMU fault interrupts. For instances that support secure mode two interrupts must be specified, for non-secure and secure mode, in that order. For instances that don't support secure mode a - single interrupt must be specified. + single interrupt must be specified. Not required for cache IPMMUs. - #iommu-cells: Must be 1. +Optional properties: + + - renesas,ipmmu-main: reference to the main IPMMU instance in two cells. + The first cell is a phandle to the main IPMMU and the second cell is + the interrupt bit number associated with the particular cache IPMMU device. + The interrupt bit number needs to match the main IPMMU IMSSTR register. + Only used by cache IPMMU instances. + + Each bus master connected to an IPMMU must reference the IPMMU in its device node with the following property: |