* NVIDIA Tegra, Universal Flash Storage (UFS) Host Controller

UFSHC nodes are defined to describe on-chip UFS host controllers.
Each UFS controller instance should have its own node.

Required properties:
- compatible        : compatible list, contains "jedec,ufs-1.1"
- interrupts        : <interrupt mapping for UFS host controller IRQ>
- reg               : <registers mapping>

Optional properties:
- clocks                : List of phandle and clock specifier pairs
- clock-names           : List of clock input name strings sorted in the same
                          order as the clocks property.
- freq-table-hz		: Array of <min max> operating frequencies stored in the same
                          order as the clocks property. If this property is not
			  defined or a value in the array is "0" then it is assumed
			  that the frequency is set by the parent clock or a
			  fixed rate clock source.

- nvidia,enable-rx-calib : Enables rx calibration functionality.
			   It is required for UFS High Speed modes.
- nvidia,enable-x2-config : Enables 2 lane register programming support.
			   Should be enabled if 2 lanes are dedicated to UFS.
- nvidia,enable-hs-mode : Flag to enable UFS High Speed modes. If this flag is not set
                          UFS will be enumerated in PWM mode.
- nvidia,mask-fast-auto-mode :  Flag to disable fast auto mode.
				When enabled UFS Fast auto mode will not be supported and
				fast mode will be supported.
- nvidia,mask-hs-mode-b : Flag to disable hs_rate_b series.
			  When enabled UFS hs_rate_b series will not be supported and
			  hs_rate_a series will be supported.
- nvidia,enable-hibern8-war : Flag to enable hibernate war.
			      when enabled, ufs tegra driver will enable a WAR to reset Mphy.
- nvidia,max-hs-gear : Flag to set Max UFS HS Gear. Values are defined as below.
			   UFS_HS_G1 = <1>;
			   UFS_HS_G2 = <2>;
		           UFS_HS_G3 = <3>;
- nvidia,max-pwm-gear : Flag to set Max UFS PWM Gear. Values are defined as below.
			   UFS_PWM_G1 = <1>;
			   UFS_PWM_G2 = <2>;
			   UFS_PWM_G3 = <3>;
			   UFS_PWM_G4 = <4>;
			   UFS_PWM_G5 = <5>;
			   UFS_PWM_G6 = <6>;
			   UFS_PWM_G7 = <7>;

Note: If above properties are not defined it can be assumed that the supply
regulators or clocks are always on.

Example:
	ufshc@0xfc598000 {
		compatible = "jedec,ufs-1.1";
		reg = <0xfc598000 0x800>;
		interrupts = <0 28 0>;

		clocks = <&core 0>, <&ref 0>, <&iface 0>;
		clock-names = "core_clk", "ref_clk", "iface_clk";
		freq-table-hz = <100000000 200000000>, <0 0>, <0 0>;
		nvidia,enable-x2-config;
		nvidia,enable-rx-calib;
		nvidia,enable-hs-mode;
		nvidia,mask-fast-auto-mode;
		nvidia,max-hs-gear = <3>;
		nvidia,max-pwm-gear = <4>;
	};