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