[PATCH v2 1/2] dt-bindings: dpll: zl3073x: ZL30643 is compatible

The Microchip ZL30643 (chip ID 0x0E3B) is a member of the ZL3064x
line card timing family. It is register compatible with the 3-channel
ZL30733 (chip ID 0x0E95) of the ZL3073x family: both datasheets
describe the same register map and use the same chip-ID encoding.

Describe it with a fallback to microchip,zl30733 rather than a new
standalone compatible.

Signed-off-by: Vincent Jardin <[email protected]>
---
 .../devicetree/bindings/dpll/microchip,zl30731.yaml   | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/dpll/microchip,zl30731.yaml b/Documentation/devicetree/bindings/dpll/microchip,zl30731.yaml
index fa5a8f8e390c..17983e6c3597 100644
--- a/Documentation/devicetree/bindings/dpll/microchip,zl30731.yaml
+++ b/Documentation/devicetree/bindings/dpll/microchip,zl30731.yaml
@@ -14,15 +14,22 @@ description:
   provides up to 5 independent DPLL channels, up to 10 differential or
   single-ended inputs and 10 differential or 20 single-ended outputs.
   These devices support both I2C and SPI interfaces.
+  The ZL3064x line card timing ICs  share the ZL3073x register map
+  and are described with a fallback to the register equivalent ZL3073x
+  part.
 
 properties:
   compatible:
-    enum:
-      - microchip,zl30731
-      - microchip,zl30732
-      - microchip,zl30733
-      - microchip,zl30734
-      - microchip,zl30735
+    oneOf:
+      - enum:
+          - microchip,zl30731
+          - microchip,zl30732
+          - microchip,zl30733
+          - microchip,zl30734
+          - microchip,zl30735
+      - items:
+          - const: microchip,zl30643
+          - const: microchip,zl30733
 
   reg:
     maxItems: 1

-- 
2.43.0