From: Ray Jui Date: Tue, 1 Nov 2016 00:38:38 +0000 (-0700) Subject: PCI: iproc: Add optional dma-ranges X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=3589c66cca7f0fd76861b40e7ca7d01c82bfe9c3;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git PCI: iproc: Add optional dma-ranges Add description for optional device tree property 'dma-ranges' for inbound mapping. Signed-off-by: Oza Oza Signed-off-by: Ray Jui Signed-off-by: Bjorn Helgaas Reviewed-by: Scott Branden --- 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