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From: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
To: Stephen Boyd <sboyd@codeaurora.org>
CC: Russell King - ARM Linux <linux@armlinux.org.uk>,
        Rob Herring <robh@kernel.org>,
        Linux-ALSA <alsa-devel@alsa-project.org>,
        Linux-DT <devicetree@vger.kernel.org>,
        Michael Turquette <mturquette@baylibre.com>,
        Linux-Kernel <linux-kernel@vger.kernel.org>,
        Mark Brown <broonie@kernel.org>, <linux-clk@vger.kernel.org>,
        Linux-ARM <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH 2/3] ASoC: simple-card: use devm_get_clk_from_child()
In-Reply-To: <20161209002837.GE5423@codeaurora.org>
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Date: Fri, 9 Dec 2016 00:33:02 +0000
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Hi Stephen

> > Documentation/devicetree/bindings/sound/simple-card.txt
> > explains 1st of_clk_get will be used as "if needed",
> > 2nd of_clk_get will be used as "not needed pattern".
> > 1st pattern will use specific clock, 2nd pattern will use
> > "cpu" or "codec" clock.
> > 2nd one was added by someone (I forgot), and many driver is
> > based on this feature.
> > 
> 
> Can you point to some dts file in the kernel that falls into the
> devm_get_clk_from_child(dev, dai_of_node, NULL) part?

How about this ?

linux/arch/arm/boot/dts/r8a7790-lager.dts :: rsnd_ak4643