[PATCH 3/3] arm64: dts: imx93-9x9-qsb: Add PDM microphone sound card support

[Shengjiu Wang]

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/imx93-9x9-qsb.dts      | 35 +++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
index d213a5343803..1340f5462d11 100644
--- a/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
+++ b/arch/arm64/boot/dts/freescale/imx93-9x9-qsb.dts
@@ -122,6 +122,18 @@ 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";
@@ -266,6 +278,12 @@ pcal6524: gpio@22 {
 		pinctrl-names = "default";
 		pinctrl-0 = <&pinctrl_pcal6524>;
 
+		mic-can-sel-hog {
+			gpio-hog;
+			gpios = <17 GPIO_ACTIVE_HIGH>;
+			output-low;
+		};
+
 		exp-sel-hog {
 			gpio-hog;
 			gpios = <22 GPIO_ACTIVE_HIGH>;
@@ -355,6 +373,15 @@ &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";
 };
@@ -535,6 +562,14 @@ MX93_PAD_SD1_STROBE__USDHC1_STROBE	0x15fe
 		>;
 	};
 
+	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_reg_usdhc2_vmmc: regusdhc2vmmcgrp {
 		fsl,pins = <
 			MX93_PAD_SD2_RESET_B__GPIO3_IO07	0x31e
-- 
2.34.1