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@xxxxxxx>
---
.../boot/dts/freescale/imx93-11x11-evk.dts | 40 +++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
index 5ebf25726c33..5e4c162e0355 100644
--- a/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts
@@ -104,6 +104,20 @@ simple-audio-card,codec {
sound-dai = <&bt_sco_codec 1>;
};
};
+
+ sound-micfil {
+ compatible = "fsl,imx-audio-card";
+ model = "micfil-audio";
+
+ pri-dai-link {
+ link-name = "micfil hifi";
+ format = "i2s";
+
+ cpu {
+ sound-dai = <&micfil>;
+ };
+ };
+ };
};
&adc1 {
@@ -361,6 +375,16 @@ &lpuart5 {
status = "okay";
};
+&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";
+};
+
&mu1 {
status = "okay";
};
@@ -563,6 +587,22 @@ MX93_PAD_CCM_CLKO2__GPIO3_IO27 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_pdm_sleep: pdmsleepgrp {
+ fsl,pins = <
+ MX93_PAD_PDM_CLK__GPIO1_IO08 0x31e
+ MX93_PAD_PDM_BIT_STREAM0__GPIO1_IO09 0x31e
+ MX93_PAD_PDM_BIT_STREAM1__GPIO1_IO10 0x31e
+ >;
+ };
+
pinctrl_sai1: sai1grp {
fsl,pins = <
MX93_PAD_SAI1_TXC__SAI1_TX_BCLK 0x31e
--
2.34.1
