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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/ufs/ufs-common.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Common properties for Universal Flash Storage (UFS) Host Controllers
maintainers:
- Alim Akhtar <alim.akhtar@samsung.com>
- Avri Altman <avri.altman@wdc.com>
properties:
clocks: true
clock-names: true
freq-table-hz:
items:
items:
- description: Minimum frequency for given clock in Hz
- description: Maximum frequency for given clock in Hz
deprecated: true
description: |
Preferred is operating-points-v2.
Array of <min max> operating frequencies in Hz stored in the same order
as the clocks property. If either this property or operating-points-v2 is
not defined or a value in the array is "0" then it is assumed that the
frequency is set by the parent clock or a fixed rate clock source.
operating-points-v2:
description:
Preferred over freq-table-hz.
If present, each OPP must contain array of frequencies stored in the same
order for each clock. If clock frequency in the array is "0" then it is
assumed that the frequency is set by the parent clock or a fixed rate
clock source.
opp-table:
type: object
interrupts:
maxItems: 1
lanes-per-direction:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [1, 2]
default: 2
description:
Number of lanes available per direction. Note that it is assume same
number of lanes is used both directions at once.
vdd-hba-supply:
description:
Phandle to UFS host controller supply regulator node.
vcc-supply:
description:
Phandle to VCC supply regulator node.
vccq-supply:
description:
Phandle to VCCQ supply regulator node.
vccq2-supply:
description:
Phandle to VCCQ2 supply regulator node.
vcc-supply-1p8:
type: boolean
description:
For embedded UFS devices, valid VCC range is 1.7-1.95V or 2.7-3.6V. This
boolean property when set, specifies to use low voltage range of
1.7-1.95V. Note for external UFS cards this property is invalid and valid
VCC range is always 2.7-3.6V.
vcc-max-microamp:
description:
Specifies max. load that can be drawn from VCC supply.
vccq-max-microamp:
description:
Specifies max. load that can be drawn from VCCQ supply.
vccq2-max-microamp:
description:
Specifies max. load that can be drawn from VCCQ2 supply.
dependencies:
freq-table-hz: [ clocks ]
operating-points-v2: [ clocks, clock-names ]
required:
- interrupts
allOf:
- if:
required:
- freq-table-hz
then:
properties:
operating-points-v2: false
- if:
required:
- operating-points-v2
then:
properties:
freq-table-hz: false
additionalProperties: true
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