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Commit b12befec authored by Kishon Vijay Abraham I's avatar Kishon Vijay Abraham I Committed by Bjorn Helgaas
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dt-bindings: PCI: Add DT bindings for PCI designware EP mode 



Add device tree binding documentation for PCI designware EP mode.

Signed-off-by: default avatarKishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
parent f8aed6ec

Documentation/devicetree/bindings/pci/designware-pcie.txt

+18 −8
Original line number Original line Diff line number Diff line
@@ -6,30 +6,40 @@ Required properties: 
- reg-names: Must be "config" for the PCIe configuration space.

- reg-names: Must be "config" for the PCIe configuration space.

    (The old way of getting the configuration address space from "ranges"

    (The old way of getting the configuration address space from "ranges"

    is deprecated and should be avoided.)

    is deprecated and should be avoided.)

- num-lanes: number of lanes to use

RC mode:

- #address-cells: set to <3>

- #address-cells: set to <3>

- #size-cells: set to <2>

- #size-cells: set to <2>

- device_type: set to "pci"

- device_type: set to "pci"

- ranges: ranges for the PCI memory and I/O regions

- ranges: ranges for the PCI memory and I/O regions

- #interrupt-cells: set to <1>

- #interrupt-cells: set to <1>

- interrupt-map-mask and interrupt-map: standard PCI properties

- interrupt-map-mask and interrupt-map: standard PCI

	to define the mapping of the PCIe interface to interrupt

	properties to define the mapping of the PCIe interface to interrupt

	numbers.

	numbers.

- num-lanes: number of lanes to use

EP mode:

- num-ib-windows: number of inbound address translation

        windows

- num-ob-windows: number of outbound address translation

        windows





Optional properties:

Optional properties:

- num-viewport: number of view ports configured in hardware.  If a platform

  does not specify it, the driver assumes 2.

- num-lanes: number of lanes to use (this property should be specified unless

- num-lanes: number of lanes to use (this property should be specified unless

  the link is brought already up in BIOS)

  the link is brought already up in BIOS)

- reset-gpio: gpio pin number of power good signal

- reset-gpio: gpio pin number of power good signal

- bus-range: PCI bus numbers covered (it is recommended for new devicetrees to

  specify this property, to keep backwards compatibility a range of 0x00-0xff

  is assumed if not present)

- clocks: Must contain an entry for each entry in clock-names.

- clocks: Must contain an entry for each entry in clock-names.

	See ../clocks/clock-bindings.txt for details.

	See ../clocks/clock-bindings.txt for details.

- clock-names: Must include the following entries:

- clock-names: Must include the following entries:

	- "pcie"

	- "pcie"

	- "pcie_bus"

	- "pcie_bus"

RC mode:

- num-viewport: number of view ports configured in

  hardware. If a platform does not specify it, the driver assumes 2.

- bus-range: PCI bus numbers covered (it is recommended

  for new devicetrees to specify this property, to keep backwards

  compatibility a range of 0x00-0xff is assumed if not present)

EP mode:

- max-functions: maximum number of functions that can be

  configured





Example configuration:

Example configuration: