[PATCH 1/6] dt-bindings: rtc: abx80x: document ABX81X RTCs

Abracon AB0815 and AB1815 are RTC modules with SPI interface.

Signed-off-by: Antoni Pokusinski <[email protected]>
---
 .../devicetree/bindings/rtc/abracon,abx80x.yaml   | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml
index 355b0598411a..234a103724b5 100644
--- a/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml
+++ b/Documentation/devicetree/bindings/rtc/abracon,abx80x.yaml
@@ -4,7 +4,7 @@
 $id: http://devicetree.org/schemas/rtc/abracon,abx80x.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Abracon ABX80X I2C ultra low power RTC/Alarm chip
+title: Abracon ABX80X (I2C) and ABX81X (SPI) ultra low power RTC/Alarm chips
 
 maintainers:
   - [email protected]
@@ -21,10 +21,12 @@ properties:
       - abracon,ab0803
       - abracon,ab0804
       - abracon,ab0805
+      - abracon,ab0815
       - abracon,ab1801
       - abracon,ab1803
       - abracon,ab1804
       - abracon,ab1805
+      - abracon,ab1815
       - microcrystal,rv1805
 
   reg:
@@ -96,3 +98,14 @@ examples:
             interrupts = <44 IRQ_TYPE_EDGE_FALLING>;
         };
     };
+
+  - |
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        rtc@0 {
+            compatible = "abracon,ab1815";
+            reg = <0>;
+        };
+    };
-- 
2.55.0