1* Universal Flash Storage (UFS) Host Controller
2
3UFSHC nodes are defined to describe on-chip UFS host controllers.
4Each UFS controller instance should have its own node.
5
6Required properties:
7- compatible        : compatible list, contains "jedec,ufs-1.1"
8- interrupts        : <interrupt mapping for UFS host controller IRQ>
9- reg               : <registers mapping>
10
11Optional properties:
12- vdd-hba-supply        : phandle to UFS host controller supply regulator node
13- vcc-supply            : phandle to VCC supply regulator node
14- vccq-supply           : phandle to VCCQ supply regulator node
15- vccq2-supply          : phandle to VCCQ2 supply regulator node
16- vcc-supply-1p8        : For embedded UFS devices, valid VCC range is 1.7-1.95V
17                          or 2.7-3.6V. This boolean property when set, specifies
18			  to use low voltage range of 1.7-1.95V. Note for external
19			  UFS cards this property is invalid and valid VCC range is
20			  always 2.7-3.6V.
21- vcc-max-microamp      : specifies max. load that can be drawn from vcc supply
22- vccq-max-microamp     : specifies max. load that can be drawn from vccq supply
23- vccq2-max-microamp    : specifies max. load that can be drawn from vccq2 supply
24- <name>-fixed-regulator : boolean property specifying that <name>-supply is a fixed regulator
25
26- clocks                : List of phandle and clock specifier pairs
27- clock-names           : List of clock input name strings sorted in the same
28                          order as the clocks property.
29- freq-table-hz		: Array of <min max> operating frequencies stored in the same
30                          order as the clocks property. If this property is not
31			  defined or a value in the array is "0" then it is assumed
32			  that the frequency is set by the parent clock or a
33			  fixed rate clock source.
34
35Note: If above properties are not defined it can be assumed that the supply
36regulators or clocks are always on.
37
38Example:
39	ufshc@0xfc598000 {
40		compatible = "jedec,ufs-1.1";
41		reg = <0xfc598000 0x800>;
42		interrupts = <0 28 0>;
43
44		vdd-hba-supply = <&xxx_reg0>;
45		vdd-hba-fixed-regulator;
46		vcc-supply = <&xxx_reg1>;
47		vcc-supply-1p8;
48		vccq-supply = <&xxx_reg2>;
49		vccq2-supply = <&xxx_reg3>;
50		vcc-max-microamp = 500000;
51		vccq-max-microamp = 200000;
52		vccq2-max-microamp = 200000;
53
54		clocks = <&core 0>, <&ref 0>, <&iface 0>;
55		clock-names = "core_clk", "ref_clk", "iface_clk";
56		freq-table-hz = <100000000 200000000>, <0 0>, <0 0>;
57	};
58