Commit b4383609 authored by Adam Ford's avatar Adam Ford Committed by Shawn Guo
Browse files

arm64: dts: imx8mp-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 2b49b889

arch/arm64/boot/dts/freescale/imx8mp-beacon-kit.dts

+43 −0
Original line number Diff line number Diff line
@@ -55,6 +55,12 @@ ss_ep: endpoint { 
		};

	};



	dmic_codec: dmic-codec {

		compatible = "dmic-codec";

		num-channels = <1>;

		#sound-dai-cells = <0>;

	};



	gpio-keys {

		compatible = "gpio-keys";

		autorepeat;
@@ -147,6 +153,22 @@ reg_usb1_host_vbus: regulator-usb1-vbus { 
		enable-active-high;

	};



	sound-dmic {

		compatible = "simple-audio-card";

		simple-audio-card,name = "sound-pdm";

		simple-audio-card,format = "i2s";

		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";
@@ -174,6 +196,11 @@ simple-audio-card,codec { 
	};

};



&audio_blk_ctrl {

	assigned-clocks = <&clk IMX8MP_AUDIO_PLL1>, <&clk IMX8MP_AUDIO_PLL2>;

	assigned-clock-rates = <393216000>, <135475200>;

};



&ecspi2 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_ecspi2>;
@@ -371,6 +398,15 @@ hd3ss3220_out_ep: endpoint { 
	};

};



&micfil {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_pdm>;

	assigned-clocks = <&clk IMX8MP_CLK_PDM>;

	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;

	assigned-clock-rates = <49152000>;

	status = "okay";

};



&pcie {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_pcie>;
@@ -553,6 +589,13 @@ MX8MP_IOMUXC_SAI2_RXFS__GPIO4_IO21 0x10 /* PCIe_nRST */ 
		>;

	};



	pinctrl_pdm: pdmgrp {

		fsl,pins = <

			MX8MP_IOMUXC_SAI5_RXC__AUDIOMIX_PDM_CLK		0xd6

			MX8MP_IOMUXC_SAI5_RXD0__AUDIOMIX_PDM_BIT_STREAM00	0xd6

		>;

	};



	pinctrl_reg_usdhc2_vmmc: regusdhc2vmmcgrp {

		fsl,pins = <

			MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x40