linux-kernel - Re: [PATCH 5/7] net: phy: Add support to configure clock in Broadcom iProc mdio mux

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Message-ID: <20180726191340.GH10686@lunn.ch>
Date:   Thu, 26 Jul 2018 21:13:40 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Arun Parameswaran <arun.parameswaran@...adcom.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Florian Fainelli <f.fainelli@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH 5/7] net: phy: Add support to configure clock in Broadcom
 iProc mdio mux

> @@ -175,6 +198,12 @@ static int mdio_mux_iproc_probe(struct platform_device *pdev)
>  		return PTR_ERR(md->base);
>  	}
>  
> +	md->core_clk = devm_clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(md->core_clk)) {
> +		dev_info(&pdev->dev, "core_clk not specified\n");
> +		md->core_clk = NULL;
> +	}
> +

In the binding, you say the clock is optional. This is a rather strong
message for something which is optional. I think it would be better to
not output anything.

    Andrew