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From: Mark Brown <broonie@kernel.org>
To: Nicolin Chen <Guangyu.Chen@freescale.com>
Cc: "Austin, Brian" <Brian.Austin@cirrus.com>,
	"Handrigan, Paul" <Paul.Handrigan@cirrus.com>,
	"robh+dt@kernel.org" <robh+dt@kernel.org>,
	"pawel.moll@arm.com" <pawel.moll@arm.com>,
	"mark.rutland@arm.com" <mark.rutland@arm.com>,
	"ijc+devicetree@hellion.org.uk" <ijc+devicetree@hellion.org.uk>,
	"galak@codeaurora.org" <galak@codeaurora.org>,
	"rob@landley.net" <rob@landley.net>,
	Liam Girdwood <lgirdwood@gmail.com>,
	"grant.likely@linaro.org" <grant.likely@linaro.org>,
	"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
	"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"alsa-devel@alsa-project.org" <alsa-devel@alsa-project.org>
Subject: Re: [PATCH] ASoC: cs42888: Add codec driver support
Date: Tue, 25 Feb 2014 09:00:27 +0900	[thread overview]
Message-ID: <20140225000027.GI25940@sirena.org.uk> (raw)
In-Reply-To: <20140224160648.GC6132@MrMyself>

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On Tue, Feb 25, 2014 at 12:06:49AM +0800, Nicolin Chen wrote:
> On Mon, Feb 24, 2014 at 03:52:24PM +0000, Austin, Brian wrote:

> Wait...Regarding this clock part, I just forgot the reason I put the code:

> 385         cs42888->clk = devm_clk_get(&i2c->dev, "mclk");
> 386         if (IS_ERR(cs42888->clk))
> 387                 dev_warn(&i2c->dev, "failed to get the clock: %ld\n",
> 388                                 PTR_ERR(cs42888->clk));

> was because the MCLK might be provided from SoC (DAI master) so it could
> be totally controlled by CPU DAI driver, ESAI for example has its own
> dividers to derive the HCKT clock (MCLK for Tx) from ahb clock in SoC
> clock tree, in which case we might not easily pass a valid clock phandle
> via DT. (RFC to this thought.)

We should be getting those clocks visible in the clock API rather than
doing this.

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  parent reply	other threads:[~2014-02-25  0:01 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-02-24  6:55 [PATCH] ASoC: cs42888: Add codec driver support Nicolin Chen
2014-02-24 11:30 ` Mark Brown
2014-02-24 15:47   ` Nicolin Chen
2014-02-24 15:52   ` Austin, Brian
2014-02-24 15:47     ` Nicolin Chen
2014-02-24 16:06     ` Nicolin Chen
2014-02-24 16:32       ` Austin, Brian
2014-02-25  2:32         ` Nicolin Chen
2014-02-25  0:00       ` Mark Brown [this message]
2014-02-25  2:38         ` Nicolin Chen
2014-02-25  3:09           ` Mark Brown
2014-02-25  3:13             ` Nicolin Chen
2014-02-25  3:39               ` Mark Brown
2014-02-25  3:46                 ` Nicolin Chen
2014-02-25  3:52                   ` Mark Brown
2014-02-25  3:54                     ` Nicolin Chen
2014-02-25  3:54                   ` [alsa-devel] " Fabio Estevam
2014-02-25  3:55                     ` Nicolin Chen
2014-02-24 17:54 ` Lars-Peter Clausen
2014-02-25  2:39   ` Nicolin Chen

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