dt-bindings: spi: sunxi: Document new compatible strings

The Allwinner H6 SPI controller has advanced features over the H3
version, but remains compatible with it.
Document the usual "specific", "fallback" compatible string pair.
Also add the R40 version while at it.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>

diff --git a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml
index 0565dc49e44940dc6326f2ee2c1672542df653d2..243a6b1e66eaacd15740f5e894bb57d799bbed35 100644 (file)
--- a/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml
+++ b/Documentation/devicetree/bindings/spi/allwinner,sun6i-a31-spi.yaml
@@ -18,9 +18,14 @@ properties:
   "#size-cells": true
 
   compatible:
-    enum:
-      - allwinner,sun6i-a31-spi
-      - allwinner,sun8i-h3-spi
+    oneOf:
+      - const: allwinner,sun6i-a31-spi
+      - const: allwinner,sun8i-h3-spi
+      - items:
+        - enum:
+          - allwinner,sun8i-r40-spi
+          - allwinner,sun50i-h6-spi
+        - const: allwinner,sun8i-h3-spi
 
   reg:
     maxItems: 1