NVIDIA Tegra xHCI controller
============================

The Tegra xHCI controller supports both USB2 and USB3 interfaces exposed by
the Tegra XUSB pad controller.

Required properties:
--------------------
- compatible: Must be:
  - Tegra124: "nvidia,tegra124-xusb"
  - Tegra132: "nvidia,tegra132-xusb", "nvidia,tegra124-xusb"
  - Tegra210: "nvidia,tegra210-xusb"
- reg: Must contain the base and length of the xHCI host registers, XUSB FPCI
  registers and XUSB IPFS registers.
- reg-names: Must contain the following entries:
  - "hcd"
  - "fpci"
  - "ipfs"
- interrupts: Must contain the xHCI host interrupt and the mailbox interrupt.
- clocks: Must contain an entry for each entry in clock-names.
  See ../clock/clock-bindings.txt for details.
- clock-names: Must include the following entries:
   - xusb_host
   - xusb_host_src
   - xusb_falcon_src
   - xusb_ss
   - xusb_ss_src
   - xusb_ss_div2
   - xusb_hs_src
   - xusb_fs_src
   - pll_u_480m
   - clk_m
   - pll_e
- resets: Must contain an entry for each entry in reset-names.
  See ../reset/reset.txt for details.
- reset-names: Must include the following entries:
  - xusb_host
  - xusb_ss
  - xusb_src
  Note that xusb_src is the shared reset for xusb_{ss,hs,fs,falcon,host}_src.
- nvidia,xusb-padctl: phandle to the XUSB pad controller that is used to
  configure the USB pads used by the XHCI controller

For Tegra124 and Tegra132:
- avddio-pex-supply: PCIe/USB3 analog logic power supply. Must supply 1.05 V.
- dvddio-pex-supply: PCIe/USB3 digital logic power supply. Must supply 1.05 V.
- avdd-usb-supply: USB controller power supply. Must supply 3.3 V.
- avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8 V.
- avdd-pll-erefe-supply: PLLE reference PLL power supply. Must supply 1.05 V.
- avdd-usb-ss-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05 V.
- hvdd-usb-ss-supply: High-voltage PCIe/USB3 power supply. Must supply 3.3 V.
- hvdd-usb-ss-pll-e-supply: High-voltage PLLE power supply. Must supply 3.3 V.

For Tegra210:
- dvddio-pex-supply: PCIe/USB3 analog logic power supply. Must supply 1.05 V.
- hvddio-pex-supply: High-voltage PCIe/USB3 power supply. Must supply 1.8 V.
- avdd-usb-supply: USB controller power supply. Must supply 3.3 V.
- avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8 V.
- avdd-pll-uerefe-supply: PLLE reference PLL power supply. Must supply 1.05 V.
- dvdd-pex-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05 V.
- hvdd-pex-pll-e-supply: High-voltage PLLE power supply. Must supply 1.8 V.
- power-domains: A list of PM domain specifiers that reference each power-domain
  used by the xHCI controller. This list must comprise of a specifier for the
  XUSBA and XUSBC power-domains. See ../power/power_domain.txt and
  ../arm/tegra/nvidia,tegra20-pmc.txt for details.
- power-domain-names: A list of names that represent each of the specifiers in
  the 'power-domains' property. Must include 'xusb_ss' and 'xusb_host' which
  represent the power-domains XUSBA and XUSBC, respectively. See
  ../power/power_domain.txt for details.

Optional properties:
--------------------
- phys: Must contain an entry for each entry in phy-names.
  See ../phy/phy-bindings.txt for details.
- phy-names: Should include an entry for each PHY used by the controller. The
  following PHYs are available:
  - Tegra124: usb2-0, usb2-1, usb2-2, hsic-0, hsic-1, usb3-0, usb3-1
  - Tegra132: usb2-0, usb2-1, usb2-2, hsic-0, hsic-1, usb3-0, usb3-1
  - Tegra210: usb2-0, usb2-1, usb2-2, usb2-3, hsic-0, usb3-0, usb3-1, usb3-2,
              usb3-3

Example:
--------

	usb@0,70090000 {
		compatible = "nvidia,tegra124-xusb";
		reg = <0x0 0x70090000 0x0 0x8000>,
		      <0x0 0x70098000 0x0 0x1000>,
		      <0x0 0x70099000 0x0 0x1000>;
		reg-names = "hcd", "fpci", "ipfs";

		interrupts = <GIC_SPI 39 IRQ_TYPE_LEVEL_HIGH>,
			     <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;

		clocks = <&tegra_car TEGRA124_CLK_XUSB_HOST>,
			 <&tegra_car TEGRA124_CLK_XUSB_HOST_SRC>,
			 <&tegra_car TEGRA124_CLK_XUSB_FALCON_SRC>,
			 <&tegra_car TEGRA124_CLK_XUSB_SS>,
			 <&tegra_car TEGRA124_CLK_XUSB_SS_DIV2>,
			 <&tegra_car TEGRA124_CLK_XUSB_SS_SRC>,
			 <&tegra_car TEGRA124_CLK_XUSB_HS_SRC>,
			 <&tegra_car TEGRA124_CLK_XUSB_FS_SRC>,
			 <&tegra_car TEGRA124_CLK_PLL_U_480M>,
			 <&tegra_car TEGRA124_CLK_CLK_M>,
			 <&tegra_car TEGRA124_CLK_PLL_E>;
		clock-names = "xusb_host", "xusb_host_src", "xusb_falcon_src",
			      "xusb_ss", "xusb_ss_div2", "xusb_ss_src",
			      "xusb_hs_src", "xusb_fs_src", "pll_u_480m",
			      "clk_m", "pll_e";
		resets = <&tegra_car 89>, <&tegra_car 156>, <&tegra_car 143>;
		reset-names = "xusb_host", "xusb_ss", "xusb_src";

		nvidia,xusb-padctl = <&padctl>;

		phys = <&{/padctl@0,7009f000/pads/usb2/lanes/usb2-1}>, /* mini-PCIe USB */
		       <&{/padctl@0,7009f000/pads/usb2/lanes/usb2-2}>, /* USB A */
		       <&{/padctl@0,7009f000/pads/pcie/lanes/pcie-0}>; /* USB A */
		phy-names = "usb2-1", "usb2-2", "usb3-0";

		avddio-pex-supply = <&vdd_1v05_run>;
		dvddio-pex-supply = <&vdd_1v05_run>;
		avdd-usb-supply = <&vdd_3v3_lp0>;
		avdd-pll-utmip-supply = <&vddio_1v8>;
		avdd-pll-erefe-supply = <&avdd_1v05_run>;
		avdd-usb-ss-pll-supply = <&vdd_1v05_run>;
		hvdd-usb-ss-supply = <&vdd_3v3_lp0>;
		hvdd-usb-ss-pll-e-supply = <&vdd_3v3_lp0>;
	};