linux-kernel - [PATCH 10/10] dt-bindings: rtc: pcf2127: add PCF2131 INT_A and INT

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Message-Id: <20220125200009.900660-11-hugo@hugovil.com>
Date:   Tue, 25 Jan 2022 15:00:09 -0500
From:   Hugo Villeneuve <hugo@...ovil.com>
To:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     hugo@...ovil.com, Hugo Villeneuve <hvilleneuve@...onoff.com>,
        linux-rtc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 10/10] dt-bindings: rtc: pcf2127: add PCF2131 INT_A and INT_B support

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

The PCF2131 has two output interrupt pins, named INT_A and INT_B.

Add properties to identify onto which pin we want the alarm interrupt
to be routed. It can be either one, or both.

These properties are automatically set to false for variants other
than PCF2131 (ex: PCF2127).

Signed-off-by: Hugo Villeneuve <hvilleneuve@...onoff.com>
---
 .../devicetree/bindings/rtc/nxp,pcf2127.yaml  | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
index 57eb0a58afa3..83656dd2f97f 100644
--- a/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
+++ b/Documentation/devicetree/bindings/rtc/nxp,pcf2127.yaml
@@ -24,6 +24,16 @@ properties:
   interrupts:
     maxItems: 1
 
+  alarm-output-a:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enable alarm interrupt on INT_A output pin.
+
+  alarm-output-b:
+    $ref: /schemas/types.yaml#/definitions/flag
+    description:
+      Enable alarm interrupt on INT_B output pin.
+
   start-year: true
 
   reset-source: true
@@ -32,6 +42,18 @@ required:
   - compatible
   - reg
 
+if:
+  not:
+    properties:
+      compatible:
+        contains:
+          enum:
+            - nxp,pcf2131
+then:
+  properties:
+    alarm-output-a: false
+    alarm-output-b: false
+
 additionalProperties: false
 
 examples:
@@ -62,6 +84,7 @@ examples:
             pinctrl-0 = <&rtc_nint_pins>;
             interrupts-extended = <&gpio1 16 IRQ_TYPE_LEVEL_HIGH>;
             reset-source;
+            alarm-output-b;
         };
     };
 
-- 
2.30.2