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arm64: dts: imx952-evk: Add PDM microphone sound card support

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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>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
This commit is contained in:
Shengjiu Wang 2026-03-16 10:14:39 +08:00 committed by Frank Li
parent 27a0f0487b
commit ae96aa9e0a
1 changed files with 54 additions and 0 deletions
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54
arch/arm64/boot/dts/freescale/imx952-evk.dts
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@ -52,6 +52,12 @@ chosen {
stdout-path = &lpuart1;
};
dmic: dmic {
compatible = "dmic-codec";
#sound-dai-cells = <0>;
num-channels = <2>;
};
memory@80000000 {
device_type = "memory";
reg = <0x0 0x80000000 0 0x80000000>;
@ -164,6 +170,24 @@ btcpu: simple-audio-card,cpu {
};
};
sound-micfil {
compatible = "fsl,imx-audio-card";
model = "micfil-audio";
pri-dai-link {
format = "i2s";
link-name = "micfil hifi";
codec {
sound-dai = <&dmic>;
};
cpu {
sound-dai = <&micfil>;
};
};
};
sound-wm8962 {
compatible = "fsl,imx-audio-wm8962";
audio-asrc = <&asrc1>;
@ -411,6 +435,22 @@ &lpspi7 {
status = "okay";
};
&micfil {
assigned-clocks = <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>,
<&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>,
<&scmi_clk IMX952_CLK_AUDIOPLL1>,
<&scmi_clk IMX952_CLK_AUDIOPLL2>,
<&scmi_clk IMX952_CLK_PDM>;
assigned-clock-parents = <0>, <0>, <0>, <0>,
<&scmi_clk IMX952_CLK_AUDIOPLL1>;
assigned-clock-rates = <3932160000>, <3612672000>,
<393216000>, <361267200>, <49152000>;
pinctrl-0 = <&pinctrl_pdm>;
pinctrl-1 = <&pinctrl_pdm_sleep>;
pinctrl-names = "default", "sleep";
status = "okay";
};
&sai1 {
assigned-clocks = <&scmi_clk IMX952_CLK_AUDIOPLL1_VCO>,
<&scmi_clk IMX952_CLK_AUDIOPLL2_VCO>,
@ -604,6 +644,20 @@ IMX952_PAD_GPIO_IO36__WAKEUPMIX_TOP_GPIO5_IO_16 0x31e
>;
};
pinctrl_pdm: pdmgrp {
fsl,pins = <
IMX952_PAD_PDM_CLK__AONMIX_TOP_PDM_CLK 0x31e
IMX952_PAD_PDM_BIT_STREAM0__AONMIX_TOP_PDM_BIT_STREAM_0 0x31e
>;
};
pinctrl_pdm_sleep: pdmsleepgrp {
fsl,pins = <
IMX952_PAD_PDM_CLK__AONMIX_TOP_GPIO1_IO_8 0x31e
IMX952_PAD_PDM_BIT_STREAM0__AONMIX_TOP_GPIO1_IO_9 0x31e
>;
};
pinctrl_ptn5110: ptn5110grp {
fsl,pins = <
IMX952_PAD_GPIO_IO34__WAKEUPMIX_TOP_GPIO5_IO_14 0x31e