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Message-ID: <27055c13-11ab-cc73-f2ba-c269785b0e28@linaro.org>
Date:   Wed, 23 Nov 2022 09:27:17 +0100
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Subject: Re: [v4 1/5] dt-bindings: mfd: Add aspeed pwm-tach binding
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From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To:     Billy Tsai <billy_tsai@aspeedtech.com>, jdelvare@suse.com,
        linux@roeck-us.net, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, joel@jms.id.au, andrew@aj.id.au,
        lee@kernel.org, thierry.reding@gmail.com,
        u.kleine-koenig@pengutronix.de, corbet@lwn.net,
        p.zabel@pengutronix.de, linux-hwmon@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-aspeed@lists.ozlabs.org, linux-kernel@vger.kernel.org,
        linux-pwm@vger.kernel.org, linux-doc@vger.kernel.org
References: <20221123061635.32025-1-billy_tsai@aspeedtech.com>
 <20221123061635.32025-2-billy_tsai@aspeedtech.com>
 <c4b188b1-06a4-3cb0-a758-e12942e1f67b@linaro.org>
In-Reply-To: <c4b188b1-06a4-3cb0-a758-e12942e1f67b@linaro.org>
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On 23/11/2022 09:24, Krzysztof Kozlowski wrote:
> On 23/11/2022 07:16, Billy Tsai wrote:
>> Add device binding for aspeed pwm-tach device which is a multi-function
>> device include pwm and tach function.
> 
> Subject: drop second, redundant "bindings".
> Also use proper PATCH prefix.
> 
>>
>> Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
>> ---
>>  .../bindings/mfd/aspeed,ast2600-pwm-tach.yaml | 73 +++++++++++++++++++
>>  1 file changed, 73 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
>> new file mode 100644
>> index 000000000000..e2a7be2e0a18
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mfd/aspeed,ast2600-pwm-tach.yaml
>> @@ -0,0 +1,73 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +# Copyright (C) 2021 Aspeed, Inc.
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/mfd/aspeed,ast2600-pwm-tach.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: PWM Tach controller
>> +
>> +description: |
>> +  The PWM Tach controller is represented as a multi-function device which
>> +  includes:
>> +    PWM
>> +    Tach
>> +
>> +maintainers:
>> +  - Billy Tsai <billy_tsai@aspeedtech.com>
>> +
>> +properties:
>> +  compatible:
>> +    items:
>> +      - enum:
>> +          - aspeed,ast2600-pwm-tach
>> +      - const: syscon
>> +      - const: simple-mfd
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +
>> +  resets:
>> +    maxItems: 1
> 
> If this is simple-mfd then it cannot take clocks or resets.  Usually the
> recommendation for such case is: This is not simple-mfd, drop it. Drop
> also syscon and make a proper device.
> 
> However I am surprised to see such change, so I have no clue why this
> was done.

Actually now I see it was like that in previous patch, I just missed it
during previous review. Anyway this must be fixed.

Best regards,
Krzysztof