linux-kernel - [PATCH RFC 1/3] dt-bindings: hwmon: Add tachometer interrupt to pwm-fan

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Message-Id: <1548860827-29796-2-git-send-email-stefan.wahren@i2se.com>
Date:   Wed, 30 Jan 2019 16:07:05 +0100
From:   Stefan Wahren <stefan.wahren@...e.com>
To:     Kamil Debski <kamil@...as.org>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>
Cc:     linux-hwmon@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Stefan Wahren <stefan.wahren@...e.com>
Subject: [PATCH RFC 1/3] dt-bindings: hwmon: Add tachometer interrupt to pwm-fan

This adds the tachometer interrupt to the pwm-fan binding, which is
necessary for RPM support.

Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>
---
 Documentation/devicetree/bindings/hwmon/pwm-fan.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
index 49ca5d8..7f69b0b 100644
--- a/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
+++ b/Documentation/devicetree/bindings/hwmon/pwm-fan.txt
@@ -8,6 +8,9 @@ Required properties:
 
 Optional properties:
 - fan-supply    : phandle to the regulator that provides power to the fan
+- interrupts    : contains a single interrupt specifier which describes the
+                  tachometer pin output of a 2 pulse-per-revolution fan.
+                  See interrupt-controller/interrupts.txt for the format.
 
 Example:
 	fan0: pwm-fan {
-- 
2.7.4