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Commit c27317c0 authored by Olof Johansson's avatar Olof Johansson
Browse files

arm/dt: add basic usb nodes to tegra device trees 



For now they are a minimal binding. It needs to be amended with
vendor-specific settings for phy setup and link tuning, etc.

v2: Added bindings specification and phy_type properties

Signed-off-by: default avatarOlof Johansson <olof@lixom.net>
Acked-by: default avatarGrant Likely <grant.likely@secretlab.ca>
Acked-by: default avatarStephen Warren <swarren@nvidia.com>
parent 317d5330

Documentation/devicetree/bindings/usb/tegra-usb.txt

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Tegra SOC USB controllers



The device node for a USB controller that is part of a Tegra

SOC is as described in the document "Open Firmware Recommended

Practice : Universal Serial Bus" with the following modifications

and additions :



Required properties :

 - compatible : Should be "nvidia,tegra20-ehci" for USB controllers

   used in host mode.

 - phy_type : Should be one of "ulpi" or "utmi".

 - nvidia,vbus-gpio : If present, specifies a gpio that needs to be

   activated for the bus to be powered.

arch/arm/boot/dts/tegra-seaboard.dts

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@@ -29,4 +29,8 @@ 
	sdhci@c8000600 {

		support-8bit;

	};



	usb@c5000000 {

		nvidia,vbus-gpio = <&gpio 24 0>; /* PD0 */

	};

};

arch/arm/boot/dts/tegra20.dtsi

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@@ -143,5 +143,26 @@ 
		reg = <0xc8000600 0x200>;

		interrupts = < 63 >;

	};



	usb@c5000000 {

		compatible = "nvidia,tegra20-ehci", "usb-ehci";

		reg = <0xc5000000 0x4000>;

		interrupts = < 52 >;

		phy_type = "utmi";

	};



	usb@c5004000 {

		compatible = "nvidia,tegra20-ehci", "usb-ehci";

		reg = <0xc5004000 0x4000>;

		interrupts = < 53 >;

		phy_type = "ulpi";

	};



	usb@c5008000 {

		compatible = "nvidia,tegra20-ehci", "usb-ehci";

		reg = <0xc5008000 0x4000>;

		interrupts = < 129 >;

		phy_type = "utmi";

	};

};