linux-kernel - [PATCH 1/2] dt-bindings: rtc: amlogic,a4-rtc: Add compatible string for C3

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Message-Id: <20250717-rtc-c3-node-v1-1-4f9ae059b8e6@amlogic.com>
Date: Thu, 17 Jul 2025 17:38:37 +0800
From: Xianwei Zhao via B4 Relay <devnull+xianwei.zhao.amlogic.com@...nel.org>
To: Yiting Deng <yiting.deng@...ogic.com>, 
 Alexandre Belloni <alexandre.belloni@...tlin.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-amlogic@...ts.infradead.org, linux-rtc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Xianwei Zhao <xianwei.zhao@...ogic.com>
Subject: [PATCH 1/2] dt-bindings: rtc: amlogic,a4-rtc: Add compatible
 string for C3

From: Xianwei Zhao <xianwei.zhao@...ogic.com>

Amlogic C3 SoCs uses the same rtc controller as A5 SoCs. There is
no need for an extra compatible line in the driver, but add C3
compatible line for documentation.

Signed-off-by: Xianwei Zhao <xianwei.zhao@...ogic.com>
---
 Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml b/Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml
index 5d3ac737abcb..e61f22eca85b 100644
--- a/Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml
+++ b/Documentation/devicetree/bindings/rtc/amlogic,a4-rtc.yaml
@@ -16,9 +16,14 @@ allOf:
 
 properties:
   compatible:
-    enum:
-      - amlogic,a4-rtc
-      - amlogic,a5-rtc
+    oneOf:
+      - enum:
+          - amlogic,a4-rtc
+          - amlogic,a5-rtc
+      - items:
+          - enum:
+              - amlogic,c3-rtc
+          - const: amlogic,a5-rtc
 
   reg:
     maxItems: 1

-- 
2.37.1