[PATCH] dt-bindings: usb: snps,dwc3: Add missing 'dma-coherent' property

Rob Herring
2022-05-26T01:41:31Z

The 'unevaluatedProperties' schema checks is not fully working and doesn't
catch some cases where there's a $ref to another schema. A fix is pending,
but results in new warnings in examples.

Some DWC3 implementations such as Xilinx are hooked up coherently and need
to set the 'dma-coherent' property.

Signed-off-by: Rob Herring <robh@kernel.org>
---
Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 2 ++
1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index f4471f8bdbef..d41265ba8ce2 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -68,6 +68,8 @@ properties:
- enum: [bus_early, ref, suspend]
- true

+ dma-coherent: true
+
iommus:
maxItems: 1

--
2.34.1