linux-kernel - [PATCH 3/3] dt-bindings: power: supply: max17042: describe interrupt

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Message-Id: <20210816082716.21193-3-krzysztof.kozlowski@canonical.com>
Date:   Mon, 16 Aug 2021 10:27:16 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To:     Sebastian Reichel <sre@...nel.org>,
        Rob Herring <robh+dt@...nel.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Sebastian Krzyszkowiak <sebastian.krzyszkowiak@...i.sm>,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        Hans de Goede <hdegoede@...hat.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Subject: [PATCH 3/3] dt-bindings: power: supply: max17042: describe interrupt

The Maxim 17042-family of fuel gauges are often embedded in other Maxim
chips, e.g. in Maxim 77693 which is a companion power management IC.
In such designs there might be actually two interrupts:
 - INTB signaling change from charger, flash or MUIC,
 - ALERT signaling change from fuel gauge.

Describe the interrupt in bindings to make it clear it is about the fuel
gauge ALERT interrupt, not the INT.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
---
 .../devicetree/bindings/power/supply/maxim,max17042.yaml        | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/power/supply/maxim,max17042.yaml b/Documentation/devicetree/bindings/power/supply/maxim,max17042.yaml
index c70f05ea6d27..95beae958096 100644
--- a/Documentation/devicetree/bindings/power/supply/maxim,max17042.yaml
+++ b/Documentation/devicetree/bindings/power/supply/maxim,max17042.yaml
@@ -25,6 +25,8 @@ properties:
 
   interrupts:
     maxItems: 1
+    description: |
+      The ALRT pin, an open-drain interrupt.
 
   maxim,rsns-microohm:
     $ref: /schemas/types.yaml#/definitions/uint32
-- 
2.30.2