linux-kernel - Re: [PATCH v4 2/5] clk: iproc: add initial common clock support

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Message-ID: <54D2ACE7.2040305@codeaurora.org>
Date:	Wed, 04 Feb 2015 15:36:07 -0800
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Ray Jui <rjui@...adcom.com>,
	Mike Turquette <mturquette@...aro.org>,
	Matt Porter <mporter@...aro.org>,
	Alex Elder <elder@...aro.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Russell King <linux@....linux.org.uk>,
	Arnd Bergmann <arnd@...db.de>
CC:	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	Scott Branden <sbranden@...adcom.com>,
	Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazau <anatol@...gle.com>,
	linux-kernel@...r.kernel.org, bcm-kernel-feedback-list@...adcom.com
Subject: Re: [PATCH v4 2/5] clk: iproc: add initial common clock support

On 02/04/15 15:33, Ray Jui wrote:
>
> On 2/4/2015 3:13 PM, Stephen Boyd wrote:
>> On 02/03/15 10:33, Ray Jui wrote:
>>> +/*
>>> + * Get the clock rate based on name
>>> + */
>>> +static unsigned long __get_rate(const char *clk_name)
>>> +{
>>> +	struct clk *clk;
>>> +
>>> +	clk = __clk_lookup(clk_name);
>>> +	if (!clk) {
>>> +		pr_err("%s: unable to find clock by name: %s\n", __func__,
>>> +				clk_name);
>>> +		return 0;
>>> +	}
>>> +
>>> +	return clk_get_rate(clk);
>>> +}
>>> +
>> This looks like something we should be providing in the core framework.
>> Care to make it into an of_clk_get_parent_rate() API?
>>
> I would love to! Note __get_rate here is really getting the clock rate
> with a name provided. Can you be more specific on what you want? If I'm
> not mistaken, what you really want is this?
>
> unsigned long of_clk_get_parent_rate(struct device_node *np, int index);

Yes that looks good.

-- 
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
a Linux Foundation Collaborative Project

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