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PCI: iproc: Add optional dma-ranges 

Add description for optional device tree property 'dma-ranges' for inbound
mapping.

Signed-off-by: Oza Oza <oza.oza@broadcom.com>
Signed-off-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Scott Branden <scott.branden@broadcom.com>
This commit is contained in:
Ray Jui 2016-10-31 17:38:38 -07:00 committed by Bjorn Helgaas
parent 4213e15c36
commit 3589c66cca
1 changed files with 3 additions and 0 deletions
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Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt
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@ -25,6 +25,9 @@ Optional properties:
- phys: phandle of the PCIe PHY device
- phy-names: must be "pcie-phy"
- dma-coherent: present if DMA operations are coherent
- dma-ranges: Some PAXB-based root complexes do not have inbound mapping done
by the ASIC after power on reset. In this case, SW is required to configure
the mapping, based on inbound memory regions specified by this property.
- brcm,pcie-ob: Some iProc SoCs do not have the outbound address mapping done
by the ASIC after power on reset. In this case, SW needs to configure it