1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
4 $id: http://devicetree.org/schemas/ufs/ufs-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Common properties for Universal Flash Storage (UFS) Host Controllers
10 - Alim Akhtar <alim.akhtar@samsung.com>
11 - Avri Altman <avri.altman@wdc.com>
21 - description: Minimum frequency for given clock in Hz
22 - description: Maximum frequency for given clock in Hz
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.
33 $ref: /schemas/types.yaml#/definitions/uint32
37 Number of lanes available per direction. Note that it is assume same
38 number of lanes is used both directions at once.
42 Phandle to UFS host controller supply regulator node.
46 Phandle to VCC supply regulator node.
50 Phandle to VCCQ supply regulator node.
54 Phandle to VCCQ2 supply regulator node.
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.
66 Specifies max. load that can be drawn from VCC supply.
70 Specifies max. load that can be drawn from VCCQ supply.
74 Specifies max. load that can be drawn from VCCQ2 supply.
77 freq-table-hz: [ 'clocks' ]
82 additionalProperties: true