From: "Rob Herring (Arm)" <robh@kernel.org>
To: Marek Vasut <marex@denx.de>
Cc: Conor Dooley <conor+dt@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
Jean Delvare <jdelvare@suse.com>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: hwmon: pwm-fan: Document start from stopped state properties
Date: Tue, 05 Nov 2024 21:33:12 -0600 [thread overview]
Message-ID: <173086399290.1351531.6915497131046060876.robh@kernel.org> (raw)
In-Reply-To: <20241106021559.175105-1-marex@denx.de>
On Wed, 06 Nov 2024 03:14:36 +0100, Marek Vasut wrote:
> Delta AFC0612DB-F00 fan has to be set to at least 30% PWM duty cycle
> to spin up from a stopped state, and can be afterward throttled down to
> lower PWM duty cycle. Introduce support for operating such fans which
> need to start at higher PWM duty cycle first and can slow down next.
>
> Document two new DT properties, "fan-stop-to-start-percent" and
> "fan-stop-to-start-usec". The former describes the minimum percent
> of fan RPM at which it will surely spin up from stopped state. This
> value can be found in the fan datasheet and can be converted to PWM
> duty cycle easily. The "fan-stop-to-start-usec" describes the minimum
> time in microseconds for which the fan has to be set to stopped state
> start RPM for the fan to surely spin up.
>
> Signed-off-by: Marek Vasut <marex@denx.de>
> ---
> Cc: Conor Dooley <conor+dt@kernel.org>
> Cc: Guenter Roeck <linux@roeck-us.net>
> Cc: Jean Delvare <jdelvare@suse.com>
> Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
> Cc: Rob Herring <robh@kernel.org>
> Cc: devicetree@vger.kernel.org
> Cc: linux-hwmon@vger.kernel.org
> ---
> V2: - Rename fan-dead-stop-start-percent to fan-stop-to-start-percent
> - Rename fan-dead-stop-start-usec to fan-stop-to-start-us
> ---
> Documentation/devicetree/bindings/hwmon/pwm-fan.yaml | 11 +++++++++++
> 1 file changed, 11 insertions(+)
>
My bot found errors running 'make dt_binding_check' on your patch:
yamllint warnings/errors:
dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/hwmon/pwm-fan.yaml: properties:fan-stop-to-start-us: '$ref' should not be valid under {'const': '$ref'}
hint: Standard unit suffix properties don't need a type $ref
from schema $id: http://devicetree.org/meta-schemas/core.yaml#
doc reference errors (make refcheckdocs):
See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20241106021559.175105-1-marex@denx.de
The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.
If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:
pip3 install dtschema --upgrade
Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.
prev parent reply other threads:[~2024-11-06 3:33 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-06 2:14 [PATCH v2 1/2] dt-bindings: hwmon: pwm-fan: Document start from stopped state properties Marek Vasut
2024-11-06 2:14 ` [PATCH v2 2/2] hwmon: (pwm-fan) Introduce start from stopped state handling Marek Vasut
2024-11-06 4:26 ` Guenter Roeck
2024-11-06 18:58 ` Marek Vasut
2024-11-06 3:33 ` Rob Herring (Arm) [this message]
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