linux-kernel - Re: [PATCH 2/3] ASoC: simple-card: use devm_get_clk_from

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Date:   Fri, 9 Dec 2016 00:33:02 +0000
From:   Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>
To:     Stephen Boyd <sboyd@...eaurora.org>
CC:     Russell King - ARM Linux <linux@...linux.org.uk>,
        Rob Herring <robh@...nel.org>,
        Linux-ALSA <alsa-devel@...a-project.org>,
        Linux-DT <devicetree@...r.kernel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Linux-Kernel <linux-kernel@...r.kernel.org>,
        Mark Brown <broonie@...nel.org>, <linux-clk@...r.kernel.org>,
        Linux-ARM <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 2/3] ASoC: simple-card: use devm_get_clk_from_child()


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