The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/pci/xgene-pci.txt

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    1 * AppliedMicro X-Gene PCIe interface
    2 
    3 Required properties:
    4 - device_type: set to "pci"
    5 - compatible: should contain "apm,xgene-pcie" to identify the core.
    6 - reg: A list of physical base address and length for each set of controller
    7        registers. Must contain an entry for each entry in the reg-names
    8        property.
    9 - reg-names: Must include the following entries:
   10   "csr": controller configuration registers.
   11   "cfg": PCIe configuration space registers.
   12 - #address-cells: set to <3>
   13 - #size-cells: set to <2>
   14 - ranges: ranges for the outbound memory, I/O regions.
   15 - dma-ranges: ranges for the inbound memory regions.
   16 - #interrupt-cells: set to <1>
   17 - interrupt-map-mask and interrupt-map: standard PCI properties
   18         to define the mapping of the PCIe interface to interrupt
   19         numbers.
   20 - clocks: from common clock binding: handle to pci clock.
   21 
   22 Optional properties:
   23 - status: Either "ok" or "disabled".
   24 - dma-coherent: Present if DMA operations are coherent
   25 
   26 Example:
   27 
   28         pcie0: pcie@1f2b0000 {
   29                 status = "disabled";
   30                 device_type = "pci";
   31                 compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie";
   32                 #interrupt-cells = <1>;
   33                 #size-cells = <2>;
   34                 #address-cells = <3>;
   35                 reg = < 0x00 0x1f2b0000 0x0 0x00010000   /* Controller registers */
   36                         0xe0 0xd0000000 0x0 0x00040000>; /* PCI config space */
   37                 reg-names = "csr", "cfg";
   38                 ranges = <0x01000000 0x00 0x00000000 0xe0 0x10000000 0x00 0x00010000   /* io */
   39                           0x02000000 0x00 0x80000000 0xe1 0x80000000 0x00 0x80000000>; /* mem */
   40                 dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000
   41                               0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>;
   42                 interrupt-map-mask = <0x0 0x0 0x0 0x7>;
   43                 interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1
   44                                  0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1
   45                                  0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1
   46                                  0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>;
   47                 dma-coherent;
   48                 clocks = <&pcie0clk 0>;
   49         };
   50

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