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| author | Scott Telford <stelford@cadence.com> | 2018-01-30 23:56:54 +0300 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2018-01-31 14:10:10 +0300 |
| commit | 2040fae4b22f419ed5cbc40ce8ec4d0fbc798a64 (patch) | |
| tree | 9690b348e34580af1c7183ec018142251dabf9b1 | |
| parent | 74b307012ff7ea9f8dffd5a44c83a5e8ec44ca0a (diff) | |
| download | linux-2040fae4b22f419ed5cbc40ce8ec4d0fbc798a64.tar.xz | |
dt-bindings: PCI: cadence: Add DT bindings for Cadence PCIe host controller
This patch adds documentation for the DT bindings of the Cadence PCIe
controller when configured in host (Root Complex) mode.
Signed-off-by: Scott Telford <stelford@cadence.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@free-electrons.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
| -rw-r--r-- | Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt new file mode 100644 index 000000000000..20a33f38f69d --- /dev/null +++ b/Documentation/devicetree/bindings/pci/cdns,cdns-pcie-host.txt @@ -0,0 +1,60 @@ +* Cadence PCIe host controller + +This PCIe controller inherits the base properties defined in +host-generic-pci.txt. + +Required properties: +- compatible: Should contain "cdns,cdns-pcie-host" to identify the IP used. +- reg: Should contain the controller register base address, PCIe configuration + window base address, and AXI interface region base address respectively. +- reg-names: Must be "reg", "cfg" and "mem" respectively. +- #address-cells: Set to <3> +- #size-cells: Set to <2> +- device_type: Set to "pci" +- ranges: Ranges for the PCI memory and I/O regions +- #interrupt-cells: Set to <1> +- interrupt-map-mask and interrupt-map: Standard PCI properties to define the + mapping of the PCIe interface to interrupt numbers. + +Optional properties: +- cdns,max-outbound-regions: Set to maximum number of outbound regions + (default 32) +- cdns,no-bar-match-nbits: Set into the no BAR match register to configure the + number of least significant bits kept during inbound (PCIe -> AXI) address + translations (default 32) +- vendor-id: The PCI vendor ID (16 bits, default is design dependent) +- device-id: The PCI device ID (16 bits, default is design dependent) + +Example: + +pcie@fb000000 { + compatible = "cdns,cdns-pcie-host"; + device_type = "pci"; + #address-cells = <3>; + #size-cells = <2>; + bus-range = <0x0 0xff>; + linux,pci-domain = <0>; + cdns,max-outbound-regions = <16>; + cdns,no-bar-match-nbits = <32>; + vendor-id = /bits/ 16 <0x17cd>; + device-id = /bits/ 16 <0x0200>; + + reg = <0x0 0xfb000000 0x0 0x01000000>, + <0x0 0x41000000 0x0 0x00001000>, + <0x0 0x40000000 0x0 0x04000000>; + reg-names = "reg", "cfg", "mem"; + + ranges = <0x02000000 0x0 0x42000000 0x0 0x42000000 0x0 0x1000000>, + <0x01000000 0x0 0x43000000 0x0 0x43000000 0x0 0x0010000>; + + #interrupt-cells = <0x1>; + + interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0x0 0x0 14 0x1 + 0x0 0x0 0x0 0x2 &gic 0x0 0x0 0x0 15 0x1 + 0x0 0x0 0x0 0x3 &gic 0x0 0x0 0x0 16 0x1 + 0x0 0x0 0x0 0x4 &gic 0x0 0x0 0x0 17 0x1>; + + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + + msi-parent = <&its_pci>; +}; |