1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause 2 %YAML 1.2 3 --- 4 $id: http://devicetree.org/schemas/ufs/ufs-common.yaml# 5 $schema: http://devicetree.org/meta-schemas/core.yaml# 6 7 title: Common properties for Universal Flash Storage (UFS) Host Controllers 8 9 maintainers: 10 - Alim Akhtar <alim.akhtar@samsung.com> 11 - Avri Altman <avri.altman@wdc.com> 12 13 properties: 14 clocks: true 15 16 clock-names: true 17 18 freq-table-hz: 19 items: 20 items: 21 - description: Minimum frequency for given clock in Hz 22 - description: Maximum frequency for given clock in Hz 23 deprecated: true 24 description: | 25 Preferred is operating-points-v2. 26 27 Array of <min max> operating frequencies in Hz stored in the same order 28 as the clocks property. If either this property or operating-points-v2 is 29 not defined or a value in the array is "0" then it is assumed that the 30 frequency is set by the parent clock or a fixed rate clock source. 31 32 operating-points-v2: 33 description: 34 Preferred over freq-table-hz. 35 If present, each OPP must contain array of frequencies stored in the same 36 order for each clock. If clock frequency in the array is "0" then it is 37 assumed that the frequency is set by the parent clock or a fixed rate 38 clock source. 39 40 opp-table: 41 type: object 42 43 interrupts: 44 maxItems: 1 45 46 lanes-per-direction: 47 $ref: /schemas/types.yaml#/definitions/uint32 48 enum: [1, 2] 49 default: 2 50 description: 51 Number of lanes available per direction. Note that it is assume same 52 number of lanes is used both directions at once. 53 54 vdd-hba-supply: 55 description: 56 Phandle to UFS host controller supply regulator node. 57 58 vcc-supply: 59 description: 60 Phandle to VCC supply regulator node. 61 62 vccq-supply: 63 description: 64 Phandle to VCCQ supply regulator node. 65 66 vccq2-supply: 67 description: 68 Phandle to VCCQ2 supply regulator node. 69 70 vcc-supply-1p8: 71 type: boolean 72 description: 73 For embedded UFS devices, valid VCC range is 1.7-1.95V or 2.7-3.6V. This 74 boolean property when set, specifies to use low voltage range of 75 1.7-1.95V. Note for external UFS cards this property is invalid and valid 76 VCC range is always 2.7-3.6V. 77 78 vcc-max-microamp: 79 description: 80 Specifies max. load that can be drawn from VCC supply. 81 82 vccq-max-microamp: 83 description: 84 Specifies max. load that can be drawn from VCCQ supply. 85 86 vccq2-max-microamp: 87 description: 88 Specifies max. load that can be drawn from VCCQ2 supply. 89 90 msi-parent: true 91 92 dependencies: 93 freq-table-hz: [ clocks ] 94 operating-points-v2: [ clocks, clock-names ] 95 96 required: 97 - interrupts 98 99 allOf: 100 - if: 101 required: 102 - freq-table-hz 103 then: 104 properties: 105 operating-points-v2: false 106 - if: 107 required: 108 - operating-points-v2 109 then: 110 properties: 111 freq-table-hz: false 112 113 additionalProperties: true
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