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Subject: Re: [PATCH v10 02/27] clk: davinci: da850-pll: change PLL0 to
 CLK_OF_DECLARE
To:     Sekhar Nori <nsekhar@ti.com>, linux-clk@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc:     Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@codeaurora.org>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Kevin Hilman <khilman@kernel.org>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Adam Ford <aford173@gmail.com>, linux-kernel@vger.kernel.org
References: <20180509172606.29387-1-david@lechnology.com>
 <20180509172606.29387-3-david@lechnology.com>
 <9203489d-0a5a-103a-67ea-d3e89bb7ebc4@ti.com>
From:   David Lechner <david@lechnology.com>
Message-ID: <88dec9b1-5f4d-a1ac-2b63-b30ae7665851@lechnology.com>
Date:   Tue, 15 May 2018 10:42:54 -0500
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On 05/15/2018 08:31 AM, Sekhar Nori wrote:
> On Wednesday 09 May 2018 10:55 PM, David Lechner wrote:
>> +void of_da850_pll0_init(struct device_node *node)
>>   {
>> -	return of_davinci_pll_init(dev, dev->of_node, &da850_pll0_info,
>> -				   &da850_pll0_obsclk_info,
>> -				   da850_pll0_sysclk_info, 7, base, cfgchip);
>> +	void __iomem *base;
>> +	struct regmap *cfgchip;
>> +
>> +	base = of_iomap(node, 0);
>> +	if (!base) {
>> +		pr_err("%s: ioremap failed\n", __func__);
>> +		return;
>> +	}
>> +
>> +	cfgchip = syscon_regmap_lookup_by_compatible("ti,da830-cfgchip");

In your previous review, you pointed out that the error did not need to
be handled here because it is handled later in davinci_pll_clk_register().

We get a warning there because cfgchip is only needed for unlocking the
PLL for CPU frequency scaling and is not critical for operation of the
clocks.

> 
> It will be nice to handle the error case here.
> 
>> +
>> +	of_davinci_pll_init(NULL, node, &da850_pll0_info,
>> +			    &da850_pll0_obsclk_info,
>> +			    da850_pll0_sysclk_info, 7, base, cfgchip);
> 
> Apart from that, it looks good to me.
> 
> Reviewed-by: Sekhar Nori <nsekhar@ti.com>
> 
> Thanks,
> Sekhar
>