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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
description: |
Array of <min max> operating frequencies in Hz stored in the same order
as the clocks property. If this property 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.
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' ]
required:
- interrupts
additionalProperties: true
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