ufs-common.yaml (2203B)
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 7title: Common properties for Universal Flash Storage (UFS) Host Controllers 8 9maintainers: 10 - Alim Akhtar <alim.akhtar@samsung.com> 11 - Avri Altman <avri.altman@wdc.com> 12 13properties: 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 description: | 24 Array of <min max> operating frequencies in Hz stored in the same order 25 as the clocks property. If this property is not defined or a value in the 26 array is "0" then it is assumed that the frequency is set by the parent 27 clock or a fixed rate clock source. 28 29 interrupts: 30 maxItems: 1 31 32 lanes-per-direction: 33 $ref: /schemas/types.yaml#/definitions/uint32 34 enum: [1, 2] 35 default: 2 36 description: 37 Number of lanes available per direction. Note that it is assume same 38 number of lanes is used both directions at once. 39 40 vdd-hba-supply: 41 description: 42 Phandle to UFS host controller supply regulator node. 43 44 vcc-supply: 45 description: 46 Phandle to VCC supply regulator node. 47 48 vccq-supply: 49 description: 50 Phandle to VCCQ supply regulator node. 51 52 vccq2-supply: 53 description: 54 Phandle to VCCQ2 supply regulator node. 55 56 vcc-supply-1p8: 57 type: boolean 58 description: 59 For embedded UFS devices, valid VCC range is 1.7-1.95V or 2.7-3.6V. This 60 boolean property when set, specifies to use low voltage range of 61 1.7-1.95V. Note for external UFS cards this property is invalid and valid 62 VCC range is always 2.7-3.6V. 63 64 vcc-max-microamp: 65 description: 66 Specifies max. load that can be drawn from VCC supply. 67 68 vccq-max-microamp: 69 description: 70 Specifies max. load that can be drawn from VCCQ supply. 71 72 vccq2-max-microamp: 73 description: 74 Specifies max. load that can be drawn from VCCQ2 supply. 75 76dependencies: 77 freq-table-hz: [ 'clocks' ] 78 79required: 80 - interrupts 81 82additionalProperties: true