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ARM: tegra: add DT nodes for Tegra USB PHY

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Add DT nodes for Tegra USB PHY along with related documentation.
Also added a phandle property to controller DT node, for referring
to connected PHY instance.

Signed-off-by: Venu Byravarasu <vbyravarasu@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
This commit is contained in:
Venu Byravarasu 2013-01-16 03:30:19 +00:00 committed by Stephen Warren
parent 5e18150a7b
commit e374b65c9b
3 changed files with 37 additions and 0 deletions
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1
Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
View File

@ -11,6 +11,7 @@ Required properties :
- 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.
- nvidia,phy : phandle of the PHY instance, the controller is connected to.
Required properties for phy_type == ulpi:
- nvidia,phy-reset-gpio : The GPIO used to reset the PHY.

14
Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt Normal file
View File

@ -0,0 +1,14 @@
Tegra SOC USB PHY
The device node for Tegra SOC USB PHY:
Required properties :
- compatible : Should be "nvidia,tegra20-usb-phy".
- reg : Address and length of the register set for the USB PHY interface.
- phy_type : Should be one of "ulpi" or "utmi".
Optional properties:
- nvidia,has-legacy-mode : boolean indicates whether this controller can
operate in legacy mode (as APX 2500 / 2600). In legacy mode some
registers are accessed through the APB_MISC base address instead of
the USB controller.

22
arch/arm/boot/dts/tegra20.dtsi
View File

@ -400,6 +400,25 @@ memory-controller@7000f400 {
#size-cells = <0>;
};
phy1: usb-phy@c5000400 {
compatible = "nvidia,tegra20-usb-phy";
reg = <0xc5000400 0x3c00>;
phy_type = "utmi";
nvidia,has-legacy-mode;
};
phy2: usb-phy@c5004400 {
compatible = "nvidia,tegra20-usb-phy";
reg = <0xc5004400 0x3c00>;
phy_type = "ulpi";
};
phy3: usb-phy@c5008400 {
compatible = "nvidia,tegra20-usb-phy";
reg = <0xc5008400 0x3C00>;
phy_type = "utmi";
};
usb@c5000000 {
compatible = "nvidia,tegra20-ehci", "usb-ehci";
reg = <0xc5000000 0x4000>;
@ -408,6 +427,7 @@ usb@c5000000 {
nvidia,has-legacy-mode;
clocks = <&tegra_car 22>;
nvidia,needs-double-reset;
nvidia,phy = <&phy1>;
status = "disabled";
};
@ -417,6 +437,7 @@ usb@c5004000 {
interrupts = <0 21 0x04>;
phy_type = "ulpi";
clocks = <&tegra_car 58>;
nvidia,phy = <&phy2>;
status = "disabled";
};
@ -426,6 +447,7 @@ usb@c5008000 {
interrupts = <0 97 0x04>;
phy_type = "utmi";
clocks = <&tegra_car 59>;
nvidia,phy = <&phy3>;
status = "disabled";
};