diff options
Diffstat (limited to 'Bindings/pci/layerscape-pci.txt')
| -rw-r--r-- | Bindings/pci/layerscape-pci.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Bindings/pci/layerscape-pci.txt b/Bindings/pci/layerscape-pci.txt index ef683b2fd23a..ee1c72d5162e 100644 --- a/Bindings/pci/layerscape-pci.txt +++ b/Bindings/pci/layerscape-pci.txt @@ -15,6 +15,7 @@ Required properties: - compatible: should contain the platform identifier such as: "fsl,ls1021a-pcie", "snps,dw-pcie" "fsl,ls2080a-pcie", "fsl,ls2085a-pcie", "snps,dw-pcie" + "fsl,ls1046a-pcie" - reg: base addresses and lengths of the PCIe controller - interrupts: A list of interrupt outputs of the controller. Must contain an entry for each entry in the interrupt-names property. @@ -24,6 +25,9 @@ Required properties: 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: @@ -38,6 +42,7 @@ Example: #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 */ |