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-Freescale Layerscape PCIe controller
-
-This PCIe host controller is based on the Synopsys DesignWare PCIe IP
-and thus inherits all the common properties defined in designware-pcie.txt.
-
-This controller derives its clocks from the Reset Configuration Word (RCW)
-which is used to describe the PLL settings at the time of chip-reset.
-
-Also as per the available Reference Manuals, there is no specific 'version'
-register available in the Freescale PCIe controller register set,
-which can allow determining the underlying DesignWare PCIe controller version
-information.
-
-Required properties:
-- compatible: should contain the platform identifier such as:
- RC mode:
- "fsl,ls1021a-pcie"
- "fsl,ls2080a-pcie", "fsl,ls2085a-pcie"
- "fsl,ls2088a-pcie"
- "fsl,ls1088a-pcie"
- "fsl,ls1046a-pcie"
- "fsl,ls1043a-pcie"
- "fsl,ls1012a-pcie"
- "fsl,ls1028a-pcie"
- EP mode:
- "fsl,ls1046a-pcie-ep", "fsl,ls-pcie-ep"
-- reg: base addresses and lengths of the PCIe controller register blocks.
-- interrupts: A list of interrupt outputs of the controller. Must contain an
- entry for each entry in the interrupt-names property.
-- interrupt-names: Must include the following entries:
- "intr": The interrupt that is asserted for controller interrupts
-- fsl,pcie-scfg: Must include two entries.
- The first entry must be a link to the SCFG device node
- The second entry must be '0' or '1' based on physical PCIe controller index.
- This is used to get SCFG PEXN registers
-- dma-coherent: Indicates that the hardware IP block can ensure the coherency
- of the data transferred from/to the IP block. This can avoid the software
- cache flush/invalid actions, and improve the performance significantly.
-
-Example:
-
- pcie@3400000 {
- compatible = "fsl,ls1021a-pcie";
- reg = <0x00 0x03400000 0x0 0x00010000 /* controller registers */
- 0x40 0x00000000 0x0 0x00002000>; /* configuration space */
- reg-names = "regs", "config";
- interrupts = <GIC_SPI 177 IRQ_TYPE_LEVEL_HIGH>; /* controller interrupt */
- interrupt-names = "intr";
- fsl,pcie-scfg = <&scfg 0>;
- #address-cells = <3>;
- #size-cells = <2>;
- device_type = "pci";
- dma-coherent;
- num-lanes = <4>;
- bus-range = <0x0 0xff>;
- ranges = <0x81000000 0x0 0x00000000 0x40 0x00010000 0x0 0x00010000 /* downstream I/O */
- 0xc2000000 0x0 0x20000000 0x40 0x20000000 0x0 0x20000000 /* prefetchable memory */
- 0x82000000 0x0 0x40000000 0x40 0x40000000 0x0 0x40000000>; /* non-prefetchable memory */
- #interrupt-cells = <1>;
- interrupt-map-mask = <0 0 0 7>;
- interrupt-map = <0000 0 0 1 &gic GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,
- <0000 0 0 2 &gic GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>,
- <0000 0 0 3 &gic GIC_SPI 190 IRQ_TYPE_LEVEL_HIGH>,
- <0000 0 0 4 &gic GIC_SPI 192 IRQ_TYPE_LEVEL_HIGH>;
- };