linux-kernel - RE: [PATCH V2] dt-bindings: input: pwm-beeper: convert to dt schema

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Date:   Tue, 4 Apr 2023 06:44:34 +0000
From:   Peng Fan <peng.fan@....com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        "Peng Fan (OSS)" <peng.fan@....nxp.com>,
        "dmitry.torokhov@...il.com" <dmitry.torokhov@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>
CC:     "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH V2] dt-bindings: input: pwm-beeper: convert to dt schema

> Subject: Re: [PATCH V2] dt-bindings: input: pwm-beeper: convert to dt
> schema
> 
> On 03/04/2023 11:06, Peng Fan (OSS) wrote:
> > From: Peng Fan <peng.fan@....com>
> >
> > Convert the binding doc to dt schema, and also fixed the example from
> > fixed-regulator to regulator-fixed.
> >
> > Signed-off-by: Peng Fan <peng.fan@....com>
> > ---
> >
> > V2:
> >  License update
> >  Don't need to show providers
> >  Make example complete
> >  Decrease beeper hz
> 
> Why?
> 
> >  Misc update
> >
> >  .../devicetree/bindings/input/pwm-beeper.txt  | 24 -----------
> > .../devicetree/bindings/input/pwm-beeper.yaml | 42
> +++++++++++++++++++
> >  2 files changed, 42 insertions(+), 24 deletions(-)  delete mode
> > 100644 Documentation/devicetree/bindings/input/pwm-beeper.txt
> >  create mode 100644
> > Documentation/devicetree/bindings/input/pwm-beeper.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.txt
> > b/Documentation/devicetree/bindings/input/pwm-beeper.txt
> > deleted file mode 100644
> > index 8fc0e48c20db..000000000000
> > --- a/Documentation/devicetree/bindings/input/pwm-beeper.txt
> > +++ /dev/null
> > @@ -1,24 +0,0 @@
> > -* PWM beeper device tree bindings
> > -
> > -Registers a PWM device as beeper.
> > -
> > -Required properties:
> > -- compatible: should be "pwm-beeper"
> > -- pwms: phandle to the physical PWM device
> > -
> > -Optional properties:
> > -- amp-supply: phandle to a regulator that acts as an amplifier for
> > the beeper
> > -- beeper-hz:  bell frequency in Hz
> > -
> > -Example:
> > -
> > -beeper_amp: amplifier {
> > -	compatible = "fixed-regulator";
> > -	gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
> > -};
> > -
> > -beeper {
> > -	compatible = "pwm-beeper";
> > -	pwms = <&pwm0>;
> > -	amp-supply = <&beeper_amp>;
> > -};
> > diff --git a/Documentation/devicetree/bindings/input/pwm-beeper.yaml
> > b/Documentation/devicetree/bindings/input/pwm-beeper.yaml
> > new file mode 100644
> > index 000000000000..a3797f338f46
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/input/pwm-beeper.yaml
> > @@ -0,0 +1,42 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> > +---
> > +$id:
> >
> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> > +cetree.org%2Fschemas%2Finput%2Fpwm-
> beeper.yaml%23&data=05%7C01%7Cpeng
> >
> +.fan%40nxp.com%7Cd0db787eb4ca45afdacb08db34d1ba6b%7C686ea1d3
> bc2b4c6fa
> >
> +92cd99c5c301635%7C0%7C0%7C638161847599379017%7CUnknown%7CT
> WFpbGZsb3d8
> >
> +eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%
> 3D%7C
> >
> +3000%7C%7C%7C&sdata=FUaIpDqrTVLbQYOrqcXjK3cIwbntbdz7zq86mWr8
> yDA%3D&re
> > +served=0
> > +$schema:
> >
> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi
> > +cetree.org%2Fmeta-
> schemas%2Fcore.yaml%23&data=05%7C01%7Cpeng.fan%40nx
> >
> +p.com%7Cd0db787eb4ca45afdacb08db34d1ba6b%7C686ea1d3bc2b4c6fa9
> 2cd99c5c
> >
> +301635%7C0%7C0%7C638161847599535229%7CUnknown%7CTWFpbGZsb
> 3d8eyJWIjoiM
> >
> +C4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C300
> 0%7C%7
> >
> +C%7C&sdata=OhqZ1z81rsRTjnHINrfR4yGh7%2FiuwGU9CuS8xPJ6NFw%3D&
> reserved=
> > +0
> > +
> > +title: PWM beeper
> > +
> > +maintainers:
> > +  - Sascha Hauer <s.hauer@...gutronix.de>
> > +
> > +properties:
> > +  compatible:
> > +    const: pwm-beeper
> > +
> > +  pwms:
> > +    description: Phandle to the physical PWM device
> 
> Drop description.
> 
> > +    maxItems: 1
> > +
> > +  amp-supply:
> > +    description: Phandle to a regulator that acts as an amplifier for
> > + the beeper
> 
> Drop "Phandle to a regulator that acts as "
> 
> > +
> > +  beeper-hz:
> > +    description: bell frequency in Hz
> > +    minimum: 1
> > +    maximum: 4
> 
> default is 1000, so how constraints can be lower than default? Also - missing
> default.
[Peng Fan] 
I am not sure what maximum value should be set. Previously I set 256, Rob
questioned it.

Regards,
Peng.
> 
> Best regards,
> Krzysztof