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| author | Ray Jui <ray.jui@broadcom.com> | 2016-11-01 01:38:38 +0100 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2016-11-17 21:40:37 +0100 |
| commit | 3589c66cca7f0fd76861b40e7ca7d01c82bfe9c3 (patch) | |
| tree | 280c475d8c8de40c49954be4d75770d6275b8477 /Documentation | |
| parent | PCI: iproc: Make outbound mapping code more generic (diff) | |
| download | linux-3589c66cca7f0fd76861b40e7ca7d01c82bfe9c3.tar.xz linux-3589c66cca7f0fd76861b40e7ca7d01c82bfe9c3.zip | |
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>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt index f827b8d394e2..5dbfb82ef88c 100644 --- a/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt +++ b/Documentation/devicetree/bindings/pci/brcm,iproc-pcie.txt @@ -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 |