linux-kernel - Re: [PATCH v8 1/4] dt-bindings: pwm: Add bindings for OpenCores PWM Controller

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Date:   Thu, 30 Nov 2023 15:33:56 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     Conor Dooley <conor@...nel.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-pwm@...r.kernel.org>,
        "Emil Renner Berthing" <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "Krzysztof Kozlowski" <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Hal Feng <hal.feng@...rfivetech.com>,
        "Paul Walmsley" <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>
Subject: Re: [PATCH v8 1/4] dt-bindings: pwm: Add bindings for OpenCores PWM
 Controller



On 2023/11/29 22:33, Conor Dooley wrote:
> On Wed, Nov 29, 2023 at 05:27:29PM +0800, William Qiu wrote:
>> Add bindings for OpenCores PWM Controller.
>> 
>> Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
>> Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
>> ---
>>  .../bindings/pwm/opencores,pwm.yaml           | 56 +++++++++++++++++++
>>  1 file changed, 56 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/pwm/opencores,pwm.yaml
>> 
>> diff --git a/Documentation/devicetree/bindings/pwm/opencores,pwm.yaml b/Documentation/devicetree/bindings/pwm/opencores,pwm.yaml
>> new file mode 100644
>> index 000000000000..133f2cd417f0
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/pwm/opencores,pwm.yaml
>> @@ -0,0 +1,56 @@
>> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/pwm/opencores,pwm.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: OpenCores PWM controller
>> +
>> +maintainers:
>> +  - William Qiu <william.qiu@...rfivetech.com>
>> +
>> +description:
>> +  OpenCores PTC ip core contains a PWM controller. When operating in PWM mode,
> 
> nit: "The OpenCores PTC IP core"
> 
Will update.
>> +  the PTC core generates binary signal with user-programmable low and high
>> +  periods. All PTC counters and registers are 32-bit.
>> +
>> +allOf:
>> +  - $ref: pwm.yaml#
>> +
>> +properties:
>> +  compatible:
>> +    oneOf:
>> +      - items:
>> +          - enum:
>> +              - starfive,jh7100-pwm
>> +              - starfive,jh7110-pwm
>> +          - const: opencores,pwm-v1
> 
> properties:
>   compatible:
>     items:
>       - enum:
>           - starfive,jh7100-pwm
>           - starfive,jh7110-pwm
>       - const: opencores,pwm-v1
> 
> Please use this form here instead.
> 
> Otherwise, this looks good to me now.
> 
I see. I'll update it.

Thanks for spending time to review this patchset.

Best Regards,
William
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  resets:
>> +    maxItems: 1
>> +
>> +  "#pwm-cells":
>> +    const: 3
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    pwm@...90000 {
>> +        compatible = "starfive,jh7110-pwm", "opencores,pwm-v1";
>> +        reg = <0x12490000 0x10000>;
>> +        clocks = <&clkgen 181>;
>> +        resets = <&rstgen 109>;
>> +        #pwm-cells = <3>;
>> +    };
>> -- 
>> 2.34.1
>> 
>>