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arm64: dts: imx91-11x11-evk: Add PDM microphone sound card support

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Add PDM micphone sound card support.

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

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Chancel Liu
2025-12-03 16:06:04 +09:00
committed by Shawn Guo
parent 3529bf1c7d
commit c85b67e2ab
1 changed files with 40 additions and 0 deletions
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40
arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
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@@ -117,6 +117,20 @@ btcpu: simple-audio-card,cpu {
dai-tdm-slot-width = <16>;
};
};
sound-micfil {
compatible = "fsl,imx-audio-card";
model = "micfil-audio";
pri-dai-link {
link-name = "micfil hifi";
format = "i2s";
cpu {
sound-dai = <&micfil>;
};
};
};
};
&adc1 {
@@ -412,6 +426,16 @@ bluetooth {
};
};
&micfil {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&pinctrl_pdm>;
pinctrl-1 = <&pinctrl_pdm_sleep>;
assigned-clocks = <&clk IMX93_CLK_PDM>;
assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
assigned-clock-rates = <49152000>;
status = "okay";
};
&sai1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&pinctrl_sai1>;
@@ -590,6 +614,22 @@ MX91_PAD_I2C2_SDA__LPI2C2_SDA 0x40000b9e
>;
};
pinctrl_pdm: pdmgrp {
fsl,pins = <
MX91_PAD_PDM_CLK__PDM_CLK 0x31e
MX91_PAD_PDM_BIT_STREAM0__PDM_BIT_STREAM0 0x31e
MX91_PAD_PDM_BIT_STREAM1__PDM_BIT_STREAM1 0x31e
>;
};
pinctrl_pdm_sleep: pdmsleepgrp {
fsl,pins = <
MX91_PAD_PDM_CLK__GPIO1_IO8 0x51e
MX91_PAD_PDM_BIT_STREAM0__GPIO1_IO9 0x51e
MX91_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x51e
>;
};
pinctrl_sai1: sai1grp {
fsl,pins = <
MX91_PAD_SAI1_TXC__SAI1_TX_BCLK 0x31e