There is a PDM microphone on the baseboard which is connected to the
micfil controller. Create a new sound card to support this interface.
Signed-off-by: Adam Ford <aford173@xxxxxxxxx>
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi
index 9e82069c941f..fa66cc9bf455 100644
--- a/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi
@@ -63,7 +63,7 @@ reg_usb_otg_vbus: regulator-usb {
enable-active-high;
};
- sound {
+ sound-codec {
compatible = "fsl,imx-audio-wm8962";
model = "wm8962-audio";
audio-cpu = <&sai3>;
@@ -76,6 +76,18 @@ sound {
"AMIC", "MICBIAS",
"IN3R", "AMIC";
};
+
+ sound-micfil {
+ compatible = "fsl,imx-audio-card";
+ model = "imx-audio-micfil";
+ pri-dai-link {
+ link-name = "micfil hifi";
+ format = "i2s";
+ cpu {
+ sound-dai = <&micfil>;
+ };
+ };
+ };
};
&ecspi2 {
@@ -150,6 +162,16 @@ &easrc {
status = "okay";
};
+&micfil {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_pdm>;
+ assigned-clocks = <&clk IMX8MN_CLK_PDM>;
+ assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>;
+ assigned-clock-rates = <196608000>;
+ status = "okay";
+ #sound-dai-cells = <0>;
+};
+
&sai3 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sai3>;
@@ -232,6 +254,13 @@ MX8MN_IOMUXC_SAI2_MCLK_GPIO4_IO27 0x19
>;
};
+ pinctrl_pdm: pdmgrp {
+ fsl,pins = <
+ MX8MN_IOMUXC_SAI5_RXC_PDM_CLK 0xd6
+ MX8MN_IOMUXC_SAI5_RXD0_PDM_BIT_STREAM0 0xd6
+ >;
+ };
+
pinctrl_reg_usb_otg: reg-otggrp {
fsl,pins = <
MX8MN_IOMUXC_SAI3_RXC_GPIO4_IO29 0x19
--
2.34.1
