[PATCH v4 3/3] dt-bindings: PCI: microchip,pcie-host: allow dma-noncoherent

[<daire.mcnamara@xxxxxxxxxxxxx>]

From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

PolarFire SoC may be configured in a way that requires non-coherent DMA
handling. On RISC-V, buses are coherent by default & the dma-noncoherent
property is required to denote buses or devices that are non-coherent.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Signed-off-by: Daire McNamara <daire.mcnamara@xxxxxxxxxxxxx>
---
 Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
index f7a3c2636355..c84e1ae20532 100644
--- a/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
+++ b/Documentation/devicetree/bindings/pci/microchip,pcie-host.yaml
@@ -52,6 +52,8 @@ properties:
     items:
       pattern: '^fic[0-3]$'
 
+  dma-noncoherent: true
+
   interrupts:
     minItems: 1
     items:
-- 
2.34.1