linux-kernel - Re: [PATCH v3 6/7] riscv: dts: starfive: Add initial StarFive JH7110 device tree

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Date:   Sun, 25 Dec 2022 12:56:15 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Hal Feng <hal.feng@...rfivetech.com>,
        linux-riscv@...ts.infradead.org, devicetree@...r.kernel.org
Cc:     Conor Dooley <conor@...nel.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Ben Dooks <ben.dooks@...ive.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>, Stephen Boyd <sboyd@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 6/7] riscv: dts: starfive: Add initial StarFive JH7110
 device tree

On 25/12/2022 11:31, Hal Feng wrote:

> 
> 	gmac0_rmii_refin: clock {
> 		...
> 	};
> 
> 	gmac0_rgmii_rxin: clock {
> 		...
> 	};
> 	...
> 
>> nothing. It looks like you avoid to define proper clock controller.
>> What's the point for all these clocks? These are no-op.
> 
> These are all external fixed rate clocks inputted to the SoC. They are the root

If they are all external, then it is fine.

> 
>>
>>> +		compatible = "fixed-clock";
>>> +		#clock-cells = <0>;
>>> +	};

Best regards,
Krzysztof