On Mon, Jul 18, 2022 at 12:37 AM Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
>
> Hi Adam,
>
> On Sun, Jul 17, 2022 at 01:09:58PM -0500, Adam Ford wrote:
> > There is a PDM microphone port on the baseboard which is connected to the
> > micfil controller. Create a new sound card to support this interface.
> >
> > Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi
> > index 03266bd90a06..16444954f873 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mm-beacon-baseboard.dtsi
> > @@ -98,7 +98,7 @@ reg_usdhc2_vmmc: regulator-usdhc2 {
> > enable-active-high;
> > };
> >
> > - sound {
> > + sound-codec {
> > compatible = "fsl,imx-audio-wm8962";
> > model = "wm8962-audio";
> > audio-cpu = <&sai3>;
> > @@ -111,6 +111,18 @@ sound {
> > "AMIC", "MICBIAS",
> > "IN3R", "AMIC";
> > };
> > +
> > + sound-micfil {
> > + compatible = "fsl,imx-audio-card";
> > + model = "imx-audio-micfil";
> > + pri-dai-link {
> > + link-name = "micfil hifi";
> > + format = "i2s";
> > + cpu {
> > + sound-dai = <&micfil>;
> > + };
> > + };
> > + };
>
> Note the micfil works well with the simple-audio-card driver which might
> be an alternative here.
Sascha,
Sorry to resurrect an old thread.
I tried using the simple-audio-card, but it doesn't present me with an
audio card. I don't get errors, but I don't get a card either. Can
you point me to an example where someone did this? I added debug code
to the simple-audio-card and I migrated an existing card, and I see
the debug code for the wm8962 CODEC, but not the micfil. The Micfil
works just fine with the imx-audio-card, but I don't mind using the
simple-audio-card if it makes more sense.
adam
>
> Sascha
>
> --
> Pengutronix e.K. | |
> Steuerwalder Str. 21 | http://www.pengutronix.de/ |
> 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
> Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
