Add PDM micphone sound card support, configure the pinmux.

This sound card supports recording sound from PDM microphone
and convert the PDM format data to PCM data.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---
 .../boot/dts/freescale/imx93-9x9-qsb.dts      | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
index f44300225656..72a0e0290a84 100644
--- a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
@@ -122,6 +122,20 @@ simple-audio-card,codec {
 		};
 	};
 
+	sound-micfil {
+		compatible = "fsl,imx-audio-card";
+		model = "micfil-audio";
+
+		pri-dai-link {
+			link-name = "micfil hifi";
+			format = "i2s";
+
+			cpu {
+				sound-dai = <&micfil>;
+			};
+		};
+	};
+
 	sound-wm8962 {
 		compatible = "fsl,imx-audio-wm8962";
 		model = "wm8962-audio";
@@ -271,6 +285,12 @@ exp-sel-hog {
 			gpios = <22 GPIO_ACTIVE_HIGH>;
 			output-low;
 		};
+
+		mic-can-sel-hog {
+			gpio-hog;
+			gpios = <17 GPIO_ACTIVE_HIGH>;
+			output-low;
+		};
 	};
 
 	pmic@25 {
@@ -355,6 +375,15 @@ &lpuart1 { /* console */
 	status = "okay";
 };
 
+&micfil {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_pdm>;
+	assigned-clocks = <&clk IMX93_CLK_PDM>;
+	assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+	assigned-clock-rates = <49152000>;
+	status = "okay";
+};
+
 &mu1 {
 	status = "okay";
 };
@@ -468,6 +497,14 @@ MX93_PAD_CCM_CLKO1__GPIO3_IO26		0x31e
 		>;
 	};
 
+	pinctrl_pdm: pdmgrp {
+		fsl,pins = <
+			MX93_PAD_PDM_CLK__PDM_CLK			0x31e
+			MX93_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM00	0x31e
+			MX93_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM01	0x31e
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX93_PAD_UART1_RXD__LPUART1_RX		0x31e
-- 
2.34.1

On Thu, Sep 12, 2024 at 09:59:41AM +0800, Shengjiu Wang wrote:
> Add PDM micphone sound card support, configure the pinmux.
>
> This sound card supports recording sound from PDM microphone
> and convert the PDM format data to PCM data.

nit: wrap at 75 chars

>
> Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
> ---

Reviewed-by: Frank Li <Frank.Li@nxp.com>

>  .../boot/dts/freescale/imx93-9x9-qsb.dts      | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> index f44300225656..72a0e0290a84 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> +++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
> @@ -122,6 +122,20 @@ simple-audio-card,codec {
>  		};
>  	};
>
> +	sound-micfil {
> +		compatible = "fsl,imx-audio-card";
> +		model = "micfil-audio";
> +
> +		pri-dai-link {
> +			link-name = "micfil hifi";
> +			format = "i2s";
> +
> +			cpu {
> +				sound-dai = <&micfil>;
> +			};
> +		};
> +	};
> +
>  	sound-wm8962 {
>  		compatible = "fsl,imx-audio-wm8962";
>  		model = "wm8962-audio";
> @@ -271,6 +285,12 @@ exp-sel-hog {
>  			gpios = <22 GPIO_ACTIVE_HIGH>;
>  			output-low;
>  		};
> +
> +		mic-can-sel-hog {
> +			gpio-hog;
> +			gpios = <17 GPIO_ACTIVE_HIGH>;
> +			output-low;
> +		};
>  	};
>
>  	pmic@25 {
> @@ -355,6 +375,15 @@ &lpuart1 { /* console */
>  	status = "okay";
>  };
>
> +&micfil {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_pdm>;
> +	assigned-clocks = <&clk IMX93_CLK_PDM>;
> +	assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
> +	assigned-clock-rates = <49152000>;
> +	status = "okay";
> +};
> +
>  &mu1 {
>  	status = "okay";
>  };
> @@ -468,6 +497,14 @@ MX93_PAD_CCM_CLKO1__GPIO3_IO26		0x31e
>  		>;
>  	};
>
> +	pinctrl_pdm: pdmgrp {
> +		fsl,pins = <
> +			MX93_PAD_PDM_CLK__PDM_CLK			0x31e
> +			MX93_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM00	0x31e
> +			MX93_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM01	0x31e
> +		>;
> +	};
> +
>  	pinctrl_uart1: uart1grp {
>  		fsl,pins = <
>  			MX93_PAD_UART1_RXD__LPUART1_RX		0x31e
> --
> 2.34.1
>