linux-kernel - Re: [PATCH v4 5/5] arm64: dts: imx8mq-evk: Enable wm8524 codec

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Date:   Fri, 8 Mar 2019 13:52:12 +0200
From:   Daniel Baluta <daniel.baluta@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Daniel Baluta <daniel.baluta@....com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "S.j. Wang" <shengjiu.wang@....com>,
        "angus@...ea.ca" <angus@...ea.ca>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "l.stach@...gutronix.de" <l.stach@...gutronix.de>,
        Abel Vesa <abel.vesa@....com>,
        "ccaione@...libre.com" <ccaione@...libre.com>,
        "baruch@...s.co.il" <baruch@...s.co.il>,
        "agx@...xcpu.org" <agx@...xcpu.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        dl-linux-imx <linux-imx@....com>,
        Aisheng Dong <aisheng.dong@....com>,
        "kuninori.morimoto.gx@...esas.com" <kuninori.morimoto.gx@...esas.com>,
        "spencercw@...il.com" <spencercw@...il.com>
Subject: Re: [PATCH v4 5/5] arm64: dts: imx8mq-evk: Enable wm8524 codec

On Fri, Mar 8, 2019 at 12:32 PM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Daniel,
>
> On Fri, Mar 1, 2019 at 12:53 PM Daniel Baluta <daniel.baluta@...il.com> wrote:
>
> > They are used by simple-card.c machine driver.
> >
> > asoc_simple_card_parse_clk
> > -> /* Parse dai->sysclk come from "clocks = <&xxx>" */
> > clk = devm_get_clk_from_child(dev, node, NULL);
>
> The simple-card looks for the "clocks" properties inside the
> simple-card node, not inside the codec node, right?

I see your point now.

Indeed, "clocks" properties is the one inside simple-card.

   sound-wm8524 {
               compatible = "simple-audio-card";
               link_codec: simple-audio-card,codec {
                       sound-dai = <&wm8524>;
                       clocks = <&clk IMX8MQ_CLK_SAI2_ROOT>;

Will remove them from  wm8524: audio-codec node because
they are useless there.

thanks,
Daniel.