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ARM: mvebu: add audio support to Armada 370 DB

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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: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
This commit is contained in:
Thomas Petazzoni 2014-02-12 18:21:00 +01:00 committed by Jason Cooper
parent 8d001f0b99
commit 249f382250
1 changed files with 48 additions and 0 deletions
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48
arch/arm/boot/dts/armada-370-db.dts
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@ -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";
};
};