0001 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/ufs/ufs-common.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Common properties for Universal Flash Storage (UFS) Host Controllers
0008
0009 maintainers:
0010 - Alim Akhtar <alim.akhtar@samsung.com>
0011 - Avri Altman <avri.altman@wdc.com>
0012
0013 properties:
0014 clocks: true
0015
0016 clock-names: true
0017
0018 freq-table-hz:
0019 items:
0020 items:
0021 - description: Minimum frequency for given clock in Hz
0022 - description: Maximum frequency for given clock in Hz
0023 description: |
0024 Array of <min max> operating frequencies in Hz stored in the same order
0025 as the clocks property. If this property is not defined or a value in the
0026 array is "0" then it is assumed that the frequency is set by the parent
0027 clock or a fixed rate clock source.
0028
0029 interrupts:
0030 maxItems: 1
0031
0032 lanes-per-direction:
0033 $ref: /schemas/types.yaml#/definitions/uint32
0034 enum: [1, 2]
0035 default: 2
0036 description:
0037 Number of lanes available per direction. Note that it is assume same
0038 number of lanes is used both directions at once.
0039
0040 vdd-hba-supply:
0041 description:
0042 Phandle to UFS host controller supply regulator node.
0043
0044 vcc-supply:
0045 description:
0046 Phandle to VCC supply regulator node.
0047
0048 vccq-supply:
0049 description:
0050 Phandle to VCCQ supply regulator node.
0051
0052 vccq2-supply:
0053 description:
0054 Phandle to VCCQ2 supply regulator node.
0055
0056 vcc-supply-1p8:
0057 type: boolean
0058 description:
0059 For embedded UFS devices, valid VCC range is 1.7-1.95V or 2.7-3.6V. This
0060 boolean property when set, specifies to use low voltage range of
0061 1.7-1.95V. Note for external UFS cards this property is invalid and valid
0062 VCC range is always 2.7-3.6V.
0063
0064 vcc-max-microamp:
0065 description:
0066 Specifies max. load that can be drawn from VCC supply.
0067
0068 vccq-max-microamp:
0069 description:
0070 Specifies max. load that can be drawn from VCCQ supply.
0071
0072 vccq2-max-microamp:
0073 description:
0074 Specifies max. load that can be drawn from VCCQ2 supply.
0075
0076 dependencies:
0077 freq-table-hz: [ 'clocks' ]
0078
0079 required:
0080 - interrupts
0081
0082 additionalProperties: true
