linux-kernel - Re: [PATCH 1/2] arm64: dts: imx8mm-evk: Add PDM micphone sound card support

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Date: Mon, 5 Feb 2024 02:21:26 +0000
From: "S.J. Wang" <shengjiu.wang@....com>
To: Shawn Guo <shawn.gsc@...il.com>
CC: "robh+dt@...nel.org" <robh+dt@...nel.org>,
	"krzysztof.kozlowski+dt@...aro.org" <krzysztof.kozlowski+dt@...aro.org>,
	"conor+dt@...nel.org" <conor+dt@...nel.org>, "shawnguo@...nel.org"
	<shawnguo@...nel.org>, "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>, "festevam@...il.com"
	<festevam@...il.com>, dl-linux-imx <linux-imx@....com>,
	"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>
Subject: Re: [PATCH 1/2] arm64: dts: imx8mm-evk: Add PDM micphone sound card
 support

> > Add PDM micphone sound card support, configure the pinmux.
> >
> > This sound card supports recording sound from PDM micphone and
> convert
> > the PDM format data to PCM data.
> >
> > Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
> > ---
> >  arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 34
> > +++++++++++++++++++
> >  1 file changed, 34 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > index b53104ed8919..9679786dac51 100644
> > --- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > +++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
> > @@ -151,6 +151,18 @@ simple-audio-card,codec {
> >                       clocks = <&clk IMX8MM_CLK_SAI3_ROOT>;
> >               };
> >       };
> > +
> > +     sound-micfil {
> > +             compatible = "fsl,imx-audio-card";
> > +             model = "micfil-audio";
> 
> Have a newline between properties and child node.
> 
> > +             pri-dai-link {
> > +                     link-name = "micfil hifi";
> > +                     format = "i2s";
> 
> Ditto
> 
Ok,  will update in v2.

Best regards
Wang shengjiu

> Shawn
> 
> > +                     cpu {
> > +                             sound-dai = <&micfil>;
> > +                     };
> > +             };
> > +     };
> >  };
> >
> >  &A53_0 {
> > @@ -434,6 +446,16 @@ &lcdif {
> >       status = "okay";
> >  };
> >
> > +&micfil {
> > +     #sound-dai-cells = <0>;
> > +     pinctrl-names = "default";
> > +     pinctrl-0 = <&pinctrl_pdm>;
> > +     assigned-clocks = <&clk IMX8MM_CLK_PDM>;
> > +     assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
> > +     assigned-clock-rates = <196608000>;
> > +     status = "okay";
> > +};
> > +
> >  &mipi_csi {
> >       status = "okay";
> >
> > @@ -636,6 +658,18 @@ MX8MM_IOMUXC_GPIO1_IO05_GPIO1_IO5
> 0x41
> >               >;
> >       };
> >
> > +     pinctrl_pdm: pdmgrp {
> > +             fsl,pins = <
> > +                     MX8MM_IOMUXC_SAI5_MCLK_SAI5_MCLK        0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXC_PDM_CLK           0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXFS_SAI5_RX_SYNC     0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXD0_PDM_DATA0        0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXD1_PDM_DATA1        0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXD2_PDM_DATA2        0xd6
> > +                     MX8MM_IOMUXC_SAI5_RXD3_PDM_DATA3        0xd6
> > +             >;
> > +     };
> > +
> >       pinctrl_pmic: pmicirqgrp {
> >               fsl,pins = <
> >                       MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3               0x141
> > --
> > 2.34.1
> >