linux-kernel - Re: [PATCH 06/18] arm64: dts: renesas: beacon: Configure Audio CODEC clocks

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Date:   Thu, 17 Dec 2020 12:11:59 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Adam Ford <aford173@...il.com>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Adam Ford-BE <aford@...conembedded.com>,
        Magnus Damm <magnus.damm@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        ALSA Development Mailing List <alsa-devel@...a-project.org>
Subject: Re: [PATCH 06/18] arm64: dts: renesas: beacon: Configure Audio CODEC clocks

Hi Adam,

CC alsa-devel

On Sun, Dec 13, 2020 at 7:38 PM Adam Ford <aford173@...il.com> wrote:
> With the newly added configurable clock options, the audio CODEC can
> configure the mclk automatically.  Add the reference to the versaclock.
> Since the devices on I2C5 can communicate at 400KHz, let's also increase
> that too
>
> Signed-off-by: Adam Ford <aford173@...il.com>

Thanks for your patch!

> --- a/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi
> +++ b/arch/arm64/boot/dts/renesas/beacon-renesom-baseboard.dtsi
> @@ -424,13 +424,15 @@ &i2c0 {
>
>  &i2c5 {
>         status = "okay";
> -       clock-frequency = <100000>;
> +       clock-frequency = <400000>;
>         pinctrl-0 = <&i2c5_pins>;
>         pinctrl-names = "default";
>
>         codec: wm8962@1a {
>                 compatible = "wlf,wm8962";
>                 reg = <0x1a>;
> +               clocks = <&versaclock6_bb 3>;
> +               clock-names = "mclk";

While the driver does get the (nameless) clock, the DT bindings lack any
mention of a clocks property.  It would be good to update the bindings.

Note that arch/arm/boot/dts/imx6-logicpd-baseboard.dtsi and
arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi (both by your
hand) use "xclk" instead of "mclk"?

>                 DCVDD-supply = <&reg_audio>;
>                 DBVDD-supply = <&reg_audio>;
>                 AVDD-supply = <&reg_audio>;

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds