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 07:51:34 +0800
From: Shawn Guo <shawn.gsc@...il.com>
To: Shengjiu Wang <shengjiu.wang@....com>
Cc: robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
	kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: imx8mm-evk: Add PDM micphone sound card
 support

On Thu, Dec 21, 2023 at 01:23:07PM +0800, Shengjiu Wang wrote:
> 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

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
>