Commit 2b49b889 authored by Adam Ford's avatar Adam Ford Committed by Shawn Guo
Browse files

arm64: dts: imx8mn-beacon: Add DMIC support 



The baseboard has a connector for a pulse density microphone.
This is connected via the micfil interface and uses the DMIC
audio codec with the simple-audio-card.

Signed-off-by: default avatarAdam Ford <aford173@gmail.com>
Reviewed-by: default avatarFabio Estevam <festevam@gmail.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent a9c8d7f7

arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi

+38 −0
Original line number Diff line number Diff line
@@ -4,6 +4,12 @@ 
 */



/ {

	dmic_codec: dmic-codec {

		compatible = "dmic-codec";

		num-channels = <1>;

		#sound-dai-cells = <0>;

	};



	leds {

		compatible = "gpio-leds";
@@ -74,6 +80,22 @@ reg_usb_otg_vbus: regulator-usb { 
		enable-active-high;

	};



	sound-dmic {

		compatible = "simple-audio-card";

		simple-audio-card,name = "dmic";

		simple-audio-card,format = "pdm";

		simple-audio-card,bitclock-master = <&dailink_master>;

		simple-audio-card,frame-master = <&dailink_master>;



		dailink_master: simple-audio-card,cpu {

			sound-dai = <&micfil>;

		};



		simple-audio-card,codec {

			sound-dai = <&dmic_codec>;

		};

	};



	sound-wm8962 {

		compatible = "simple-audio-card";

		simple-audio-card,name = "wm8962";
@@ -221,6 +243,15 @@ mipi_csi_in: endpoint { 
	};

};



&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 = <49152000>;

	status = "okay";

};



&sai3 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_sai3>;
@@ -311,6 +342,13 @@ 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