Re: [PATCH RFC 1/3] dt-bindings: hwmon: Add tachometer interrupt to pwm-fan
flat view
From: Guenter Roeck <linux@roeck-us.net>
Date: 2019-01-30 17:28:20
Also in:
linux-hwmon, lkml
On Wed, Jan 30, 2019 at 04:07:05PM +0100, Stefan Wahren wrote:
quoted hunk ↗ jump to hunk
This adds the tachometer interrupt to the pwm-fan binding, which is necessary for RPM support. Signed-off-by: Stefan Wahren <redacted> --- 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.
So a hypothetical {1,4} pulse-per-revolution fan would explicitly not be
supported ? Why ?
Guenter