Commit d874b9f7 authored by Luca Ceresoli's avatar Luca Ceresoli Committed by Shawn Guo
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arm64: dts: imx8mp-msc-sm2s: Add sound card 



The MSC SM2-MB-EP1 carrier board for the SM2S-IMX8PLUS SMARC module has an
NXP SGTL5000 audio codec connected to I2S-0 (sai2).

This requires to:

 * add the power supplies (always on)
 * enable sai2 with pinmuxes
 * reparent the CLKOUT1 clock that feeds the codec SYS_MCLK to
   IMX8MP_CLK_24M in order it to generate an accurate 24 MHz rate

Signed-off-by: default avatarLuca Ceresoli <luca.ceresoli@bootlin.com>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent f5402fff

arch/arm64/boot/dts/freescale/imx8mp-msc-sm2s-ep1.dts

+70 −0
Original line number Diff line number Diff line
@@ -14,6 +14,67 @@ / { 
	compatible = "avnet,sm2s-imx8mp-14N0600E-ep1",

		     "avnet,sm2s-imx8mp-14N0600E", "avnet,sm2s-imx8mp",

		     "fsl,imx8mp";



	reg_vcc_3v3_audio: 3v3-audio-regulator {

		compatible = "regulator-fixed";

		regulator-name = "VCC_3V3_AUD";

		regulator-min-microvolt = <3300000>;

		regulator-max-microvolt = <3300000>;

	};



	reg_vcc_1v8_audio: 1v8-audio-regulator {

		compatible = "regulator-fixed";

		regulator-name = "VCC_1V8_AUD";

		regulator-min-microvolt = <1800000>;

		regulator-max-microvolt = <1800000>;

	};



	sound {

		compatible = "simple-audio-card";

		simple-audio-card,name = "sgtl5000-audio";

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

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

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



		simple-audio-card,cpu {

			sound-dai = <&sai2>;

		};



		codec_dai: simple-audio-card,codec {

			sound-dai = <&sgtl5000>;

		};

	};

};



&i2c1 {

	sgtl5000: audio-codec@a {

		compatible = "fsl,sgtl5000";

		reg = <0x0a>;



		assigned-clocks = <&clk IMX8MP_CLK_CLKOUT1_SEL>;

		assigned-clock-parents = <&clk IMX8MP_CLK_24M>;

		assigned-clock-rates = <24000000>;

		clocks = <&clk IMX8MP_CLK_CLKOUT1>;

		clock-names = "mclk";

		#sound-dai-cells = <0>;



		VDDA-supply  = <&reg_vcc_3v3_audio>;

		VDDD-supply  = <&reg_vcc_1v8_audio>;

		VDDIO-supply = <&reg_vcc_1v8_audio>;

	};

};



/* I2S-0 = sai2 */

&sai2 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_sai2>;



	assigned-clocks = <&clk IMX8MP_CLK_SAI2>;

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

	assigned-clock-rates = <12288000>;



	fsl,sai-mclk-direction-output;

	status = "okay";

};



&flexcan1 {
@@ -32,6 +93,15 @@ &iomuxc { 
	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_smarc_gpio>;



	pinctrl_sai2: sai2grp {

		fsl,pins = <

			MX8MP_IOMUXC_SAI2_TXFS__AUDIOMIX_SAI2_TX_SYNC   0xd6

			MX8MP_IOMUXC_SAI2_TXC__AUDIOMIX_SAI2_TX_BCLK    0xd6

			MX8MP_IOMUXC_SAI2_RXD0__AUDIOMIX_SAI2_RX_DATA00 0xd6

			MX8MP_IOMUXC_SAI2_TXD0__AUDIOMIX_SAI2_TX_DATA00 0xd6

		>;

	};



	pinctrl_smarc_gpio: smarcgpiosgrp {

		fsl,pins =

			<MX8MP_IOMUXC_GPIO1_IO11__GPIO1_IO11	0x19>, /* GPIO0 */