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| author | Phil Edworthy <phil.edworthy@renesas.com> | 2015-11-03 17:19:26 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2015-11-25 18:53:31 +0100 |
| commit | 8d598cabf50d837e69ebd6fc86aec5550df2b3a2 (patch) | |
| tree | 3d97cca9da99eed090fd75ae89560c65135cdb80 /Documentation | |
| parent | Linux 4.4-rc2 (diff) | |
| download | linux-8d598cabf50d837e69ebd6fc86aec5550df2b3a2.tar.xz linux-8d598cabf50d837e69ebd6fc86aec5550df2b3a2.zip | |
PCI: rcar: Allow DT to override default window settings
If the DTB specifies dma-ranges, use those values. Otherwise, default to
the values that were previously hardcoded into the driver.
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt index 7fab84b33531..891463cb09c2 100644 --- a/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt +++ b/Documentation/devicetree/bindings/pci/pci-rcar-gen2.txt @@ -24,6 +24,11 @@ Required properties: - interrupt-map-mask: standard property that helps to define the interrupt mapping. +Optional properties: +- dma-ranges: a single range for the inbound memory region. If not supplied, + defaults to 1GiB at 0x40000000. Note there are hardware restrictions on the + allowed combinations of address and size. + Example SoC configuration: pci0: pci@ee090000 { @@ -38,6 +43,7 @@ Example SoC configuration: #address-cells = <3>; #size-cells = <2>; #interrupt-cells = <1>; + dma-ranges = <0x42000000 0 0x40000000 0 0x40000000 0 0x40000000>; interrupt-map-mask = <0xff00 0 0 0x7>; interrupt-map = <0x0000 0 0 1 &gic 0 108 IRQ_TYPE_LEVEL_HIGH 0x0800 0 0 1 &gic 0 108 IRQ_TYPE_LEVEL_HIGH |