[PATCH v4 12/18] dt-bindings: usb: dwc3: Add synopsys,dwc3 compatible string

[Serge Semin <Sergey.Semin@baikalelectronics.ru>]

The DWC USB3 driver and some DTS files like Exynos 5250, Keystone k2e, etc
expects the DWC USB3 DT node to have the compatible string with the
"synopsys" vendor prefix. Let's add the corresponding compatible string to
the controller DT schema, but mark it as deprecated seeing the Synopsys,
Inc. is presented with just "snps" vendor prefix.

Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>

---

Changelog v2:
- Drop quotes from around the compat string constant.

Changelog v4:
- Get the patch back, since we can't discard the deprecated prefix from the
  driver.
---
 Documentation/devicetree/bindings/usb/snps,dwc3.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
index c205afd66b7c..4f68c5cd7a45 100644
--- a/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/snps,dwc3.yaml
@@ -28,7 +28,10 @@ allOf:
 properties:
   compatible:
     contains:
-      const: snps,dwc3
+      oneOf:
+        - const: snps,dwc3
+        - const: synopsys,dwc3
+          deprecated: true
 
   interrupts:
     description:
-- 
2.28.0