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@xxxxxxxxxx>
---
.../bindings/usb/nvidia,tegra20-ehci.txt | 1 +
.../bindings/usb/nvidia,tegra20-usb-phy.txt | 14 ++++++++++++
arch/arm/boot/dts/tegra20.dtsi | 22 ++++++++++++++++++++
3 files changed, 37 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
index 6ea765a..34c9528 100644
--- a/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-ehci.txt
@@ -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.
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
new file mode 100644
index 0000000..84a4c12
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/nvidia,tegra20-usb-phy.txt
@@ -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.
\ No newline at end of file
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index b4c13b6..96251b0 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -394,6 +394,25 @@
#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>;
@@ -402,6 +421,7 @@
nvidia,has-legacy-mode;
status = "disabled";
nvidia,needs-double-reset;
+ nvidia,phy = <&phy1>;
};
usb@c5004000 {
@@ -410,6 +430,7 @@
interrupts = <0 21 0x04>;
phy_type = "ulpi";
status = "disabled";
+ nvidia,phy = <&phy2>;
};
usb@c5008000 {
@@ -418,6 +439,7 @@
interrupts = <0 97 0x04>;
phy_type = "utmi";
status = "disabled";
+ nvidia,phy = <&phy3>;
};
sdhci@c8000000 {
--
1.7.0.4
--
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