[PATCH v1 1/2] spi: dt-bindings: cadence: add soc-specific compatible strings for zynqmp and versal-net

[Conor Dooley]

From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

When the binding for the Cadence spi controller was written, a dedicated
compatible was added for the zynq device. Later when zynqmp and
versal-net, which also use this spi controller IP, were added they did
not receive soc-specific compatibles. Add them now, with a fallback to
the existing compatible for the r1p6 version of the IP so that there
will be no functional change. Retain the r1p6 in the string, to match
what was done for zynq.

Disallow the cdns,spi-r1p6 compatible in isolation to "encourage" people
to actually add soc-specific compatible strings in the future.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
CC: Jun Guo <Jun.Guo@xxxxxxxxxxx>
CC: Mark Brown <broonie@xxxxxxxxxx>
CC: Rob Herring <robh@xxxxxxxxxx>
CC: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
CC: Conor Dooley <conor+dt@xxxxxxxxxx>
CC: Michal Simek <michal.simek@xxxxxxx>
CC: linux-spi@xxxxxxxxxxxxxxx
CC: devicetree@xxxxxxxxxxxxxxx
CC: linux-kernel@xxxxxxxxxxxxxxx
CC: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
---
 .../devicetree/bindings/spi/spi-cadence.yaml          | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/spi/spi-cadence.yaml b/Documentation/devicetree/bindings/spi/spi-cadence.yaml
index 8de96abe9da1..27414b78d61d 100644
--- a/Documentation/devicetree/bindings/spi/spi-cadence.yaml
+++ b/Documentation/devicetree/bindings/spi/spi-cadence.yaml
@@ -14,9 +14,14 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - cdns,spi-r1p6
-      - xlnx,zynq-spi-r1p6
+    oneOf:
+      - enum:
+          - xlnx,zynq-spi-r1p6
+      - items:
+          - enum:
+              - xlnx,zynqmp-spi-r1p6
+              - xlnx,versal-net-spi-r1p6
+          - const: cdns,spi-r1p6
 
   reg:
     maxItems: 1
-- 
2.47.3