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Commit 249f3822 authored by Thomas Petazzoni's avatar Thomas Petazzoni Committed by Jason Cooper
Browse files

ARM: mvebu: add audio support to Armada 370 DB 



This commit adds the necessary Device Tree informations to enable
audio support on the Armada 370 DB platform. In details it:

 * Instantiates the CS42L51 audio codec on the I2C0 bus, and
   configures this bus with the appropriate pin-muxing configuration.

 * Enables the I2S audio controller, and configures it with the
   appropriate pin-muxing configuration.

 * Through hog pins, ensures that the other pins possibly used for I2S
   are muxed with another function than I2S.

Signed-off-by: default avatarThomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: default avatarJason Cooper <jason@lakedaemon.net>
parent 8d001f0b

arch/arm/boot/dts/armada-370-db.dts

+48 −0
Original line number Diff line number Diff line
@@ -64,6 +64,22 @@ 
				phy-mode = "rgmii-id";

			};



			i2c@11000 {

				pinctrl-0 = <&i2c0_pins>;

				pinctrl-names = "default";

				status = "okay";

				audio_codec: audio-codec@4a {

					compatible = "cirrus,cs42l51";

					reg = <0x4a>;

				};

			};



			audio-controller@30000 {

				pinctrl-0 = <&i2s_pins2>;

				pinctrl-names = "default";

				status = "okay";

			};



			mvsdio@d4000 {

				pinctrl-0 = <&sdio_pins1>;

				pinctrl-names = "default";
@@ -80,6 +96,30 @@ 
				broken-cd;

			};



			pinctrl {

				/*

				 * These pins might be muxed as I2S by

				 * the bootloader, but it conflicts

				 * with the real I2S pins that are

				 * muxed using i2s_pins. We must mux

				 * those pins to a function other than

				 * I2S.

				 */

				pinctrl-0 = <&hog_pins1 &hog_pins2>;

				pinctrl-names = "default";



				hog_pins1: hog-pins1 {

					marvell,pins = "mpp6",  "mpp8", "mpp10",

						       "mpp12", "mpp13";

					marvell,function = "gpio";

				};



				hog_pins2: hog-pins2 {

					marvell,pins = "mpp5", "mpp7", "mpp9";

					marvell,function = "gpo";

				};

			};



			usb@50000 {

				status = "okay";

			};
@@ -112,10 +152,18 @@ 
				/* Port 0, Lane 0 */

				status = "okay";

			};



			pcie@2,0 {

				/* Port 1, Lane 0 */

				status = "okay";

			};

		};

	};



	sound {

	      compatible = "marvell,a370db-audio";

	      marvell,audio-controller = <&audio_controller>;

	      marvell,audio-codec = <&audio_codec>;

	      status = "okay";

	};

};