linux-kernel - [PATCH 3/3] dt-bindings: rtc: add binding for RV8063

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Message-Id: <20250407193521.634807-4-apokusinski01@gmail.com>
Date: Mon,  7 Apr 2025 21:35:21 +0200
From: Antoni Pokusinski <apokusinski01@...il.com>
To: alexandre.belloni@...tlin.com,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	robh@...nel.org,
	alexander.stein@...tq-group.com
Cc: linux-rtc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org,
	Antoni Pokusinski <apokusinski01@...il.com>
Subject: [PATCH 3/3] dt-bindings: rtc: add binding for RV8063

Microcrystal RV8063 is a real-time clock module with SPI interface.

Signed-off-by: Antoni Pokusinski <apokusinski01@...il.com>
---
 .../devicetree/bindings/rtc/nxp,pcf85063.yaml | 33 ++++++++++++++++++-
 1 file changed, 32 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
index 2f892f8640d1..cb31c7619d66 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf85063.yaml
@@ -12,6 +12,7 @@ maintainers:
 properties:
   compatible:
     enum:
+      - microcrystal,rv8063
       - microcrystal,rv8263
       - nxp,pcf85063
       - nxp,pcf85063a
@@ -44,7 +45,12 @@ properties:
 
   wakeup-source: true
 
+  spi-cs-high: true
+
+  spi-3wire: true
+
 allOf:
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
   - $ref: rtc.yaml#
   - if:
       properties:
@@ -52,6 +58,7 @@ allOf:
           contains:
             enum:
               - microcrystal,rv8263
+              - microcrystal,rv8063
     then:
       properties:
         quartz-load-femtofarads: false
@@ -65,12 +72,23 @@ allOf:
       properties:
         quartz-load-femtofarads:
           const: 7000
+  - if:
+      properties:
+        compatible:
+          not:
+            contains:
+              enum:
+                - microcrystal,rv8063
+    then:
+      properties:
+        spi-cs-high: false
+        spi-3wire: false
 
 required:
   - compatible
   - reg
 
-additionalProperties: false
+unevaluatedProperties: false
 
 examples:
   - |
@@ -90,3 +108,16 @@ examples:
           };
         };
       };
+
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rtc@0 {
+          compatible = "microcrystal,rv8063";
+          reg = <0>;
+          spi-cs-high;
+          spi-3wire;
+        };
+    };
-- 
2.25.1