[PATCH V4 1/5] dt-bindings: usb: tegra-xudc: Add dma-coherent for Tegra194

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DMA operations for XUSB device controller are coherent for Tegra194 and
so update the device-tree binding to add this property.

Fixes: 394b012a422d ("dt-bindings: usb: tegra-xudc: Add Tegra194 XUSB controller support")

Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
 .../devicetree/bindings/usb/nvidia,tegra-xudc.yaml   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml b/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml
index f6cb19efd98b..4ef88d38fa3a 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra-xudc.yaml
@@ -112,6 +112,8 @@ properties:
   hvdd-usb-supply:
     description: USB controller power supply. Must supply 3.3 V.
 
+  dma-coherent: true
+
 required:
   - compatible
   - reg
@@ -164,6 +166,16 @@ allOf:
         clock-names:
           maxItems: 4
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - nvidia,tegra194-xudc
+    then:
+      required:
+        - dma-coherent
+
 additionalProperties: false
 
 examples:
-- 
2.25.1




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