60 lines
1.9 KiB
Plaintext
60 lines
1.9 KiB
Plaintext
Aardvark PCIe controller
|
|
|
|
This PCIe controller is used on the Marvell Armada 3700 ARM64 SoC.
|
|
|
|
The Device Tree node describing an Aardvark PCIe controller must
|
|
contain the following properties:
|
|
|
|
- compatible: Should be "marvell,armada-3700-pcie"
|
|
- reg: range of registers for the PCIe controller
|
|
- interrupts: the interrupt line of the PCIe controller
|
|
- #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>
|
|
- msi-controller: indicates that the PCIe controller can itself
|
|
handle MSI interrupts
|
|
- msi-parent: pointer to the MSI controller to be used
|
|
- interrupt-map-mask and interrupt-map: standard PCI properties to
|
|
define the mapping of the PCIe interface to interrupt numbers.
|
|
- bus-range: PCI bus numbers covered
|
|
- phys: the PCIe PHY handle
|
|
- max-link-speed: see pci.txt
|
|
- reset-gpios: see pci.txt
|
|
|
|
In addition, the Device Tree describing an Aardvark PCIe controller
|
|
must include a sub-node that describes the legacy interrupt controller
|
|
built into the PCIe controller. This sub-node must have the following
|
|
properties:
|
|
|
|
- interrupt-controller
|
|
- #interrupt-cells: set to <1>
|
|
|
|
Example:
|
|
|
|
pcie0: pcie@d0070000 {
|
|
compatible = "marvell,armada-3700-pcie";
|
|
device_type = "pci";
|
|
reg = <0 0xd0070000 0 0x20000>;
|
|
#address-cells = <3>;
|
|
#size-cells = <2>;
|
|
bus-range = <0x00 0xff>;
|
|
interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
|
|
#interrupt-cells = <1>;
|
|
msi-controller;
|
|
msi-parent = <&pcie0>;
|
|
ranges = <0x82000000 0 0xe8000000 0 0xe8000000 0 0x1000000 /* Port 0 MEM */
|
|
0x81000000 0 0xe9000000 0 0xe9000000 0 0x10000>; /* Port 0 IO*/
|
|
interrupt-map-mask = <0 0 0 7>;
|
|
interrupt-map = <0 0 0 1 &pcie_intc 0>,
|
|
<0 0 0 2 &pcie_intc 1>,
|
|
<0 0 0 3 &pcie_intc 2>,
|
|
<0 0 0 4 &pcie_intc 3>;
|
|
phys = <&comphy1 0>;
|
|
pcie_intc: interrupt-controller {
|
|
interrupt-controller;
|
|
#interrupt-cells = <1>;
|
|
};
|
|
};
|