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 : must contain "jedec,ufs-1.1", may also list one or more 8 of the following: 9 "qcom,msm8994-ufshc" 10 "qcom,msm8996-ufshc" 11 "qcom,ufshc" 12- interrupts : <interrupt mapping for UFS host controller IRQ> 13- reg : <registers mapping> 14 15Optional properties: 16- phys : phandle to UFS PHY node 17- phy-names : the string "ufsphy" when is found in a node, along 18 with "phys" attribute, provides phandle to UFS PHY node 19- vdd-hba-supply : phandle to UFS host controller supply regulator node 20- vcc-supply : phandle to VCC supply regulator node 21- vccq-supply : phandle to VCCQ supply regulator node 22- vccq2-supply : phandle to VCCQ2 supply regulator node 23- vcc-supply-1p8 : For embedded UFS devices, valid VCC range is 1.7-1.95V 24 or 2.7-3.6V. This boolean property when set, specifies 25 to use low voltage range of 1.7-1.95V. Note for external 26 UFS cards this property is invalid and valid VCC range is 27 always 2.7-3.6V. 28- vcc-max-microamp : specifies max. load that can be drawn from vcc supply 29- vccq-max-microamp : specifies max. load that can be drawn from vccq supply 30- vccq2-max-microamp : specifies max. load that can be drawn from vccq2 supply 31- <name>-fixed-regulator : boolean property specifying that <name>-supply is a fixed regulator 32 33- clocks : List of phandle and clock specifier pairs 34- clock-names : List of clock input name strings sorted in the same 35 order as the clocks property. 36- freq-table-hz : Array of <min max> operating frequencies stored in the same 37 order as the clocks property. If this property is not 38 defined or a value in the array is "0" then it is assumed 39 that the frequency is set by the parent clock or a 40 fixed rate clock source. 41 42Note: If above properties are not defined it can be assumed that the supply 43regulators or clocks are always on. 44 45Example: 46 ufshc@0xfc598000 { 47 compatible = "jedec,ufs-1.1"; 48 reg = <0xfc598000 0x800>; 49 interrupts = <0 28 0>; 50 51 vdd-hba-supply = <&xxx_reg0>; 52 vdd-hba-fixed-regulator; 53 vcc-supply = <&xxx_reg1>; 54 vcc-supply-1p8; 55 vccq-supply = <&xxx_reg2>; 56 vccq2-supply = <&xxx_reg3>; 57 vcc-max-microamp = 500000; 58 vccq-max-microamp = 200000; 59 vccq2-max-microamp = 200000; 60 61 clocks = <&core 0>, <&ref 0>, <&iface 0>; 62 clock-names = "core_clk", "ref_clk", "iface_clk"; 63 freq-table-hz = <100000000 200000000>, <0 0>, <0 0>; 64 phys = <&ufsphy1>; 65 phy-names = "ufsphy"; 66 }; 67