dt-bindings: rng: add google,gs101-trng compatible

Add support for the TRNG found on GS101. It works well with the current
exynos850 TRNG support.

The TRNG controller can be part of a power domain, allow the relevant
property 'power-domains'.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251024-gs101-trng-v3-1-5d3403738f39@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

diff --git a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
index 1a71935d8a1906591439c03b7678538e656324b6..699831927932949a433fa5dca767ad366fb76f2c 100644 (file)
--- a/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
+++ b/Documentation/devicetree/bindings/rng/samsung,exynos5250-trng.yaml
@@ -12,9 +12,13 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - samsung,exynos5250-trng
-      - samsung,exynos850-trng
+    oneOf:
+      - enum:
+          - samsung,exynos5250-trng
+          - samsung,exynos850-trng
+      - items:
+          - const: google,gs101-trng
+          - const: samsung,exynos850-trng
 
   clocks:
     minItems: 1
@@ -24,6 +28,9 @@ properties:
     minItems: 1
     maxItems: 2
 
+  power-domains:
+    maxItems: 1
+
   reg:
     maxItems: 1