1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/ata/ahci-co 4 $id: http://devicetree.org/schemas/ata/ahci-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Common Properties for Serial ATA AHCI c 7 title: Common Properties for Serial ATA AHCI controllers
8 8
9 maintainers: 9 maintainers:
10 - Hans de Goede <hdegoede@redhat.com> 10 - Hans de Goede <hdegoede@redhat.com>
11 - Damien Le Moal <dlemoal@kernel.org> 11 - Damien Le Moal <dlemoal@kernel.org>
12 12
13 description: 13 description:
14 This document defines device tree properties 14 This document defines device tree properties for a common AHCI SATA
15 controller implementation. It's hardware int 15 controller implementation. It's hardware interface is supposed to
16 conform to the technical standard defined by 16 conform to the technical standard defined by Intel (see Serial ATA
17 Advanced Host Controller Interface specifica 17 Advanced Host Controller Interface specification for details). The
18 document doesn't constitute a DT-node bindin 18 document doesn't constitute a DT-node binding by itself but merely
19 defines a set of common properties for the A 19 defines a set of common properties for the AHCI-compatible devices.
20 20
21 select: false 21 select: false
22 22
23 allOf: 23 allOf:
24 - $ref: sata-common.yaml# 24 - $ref: sata-common.yaml#
25 25
26 properties: 26 properties:
27 reg: 27 reg:
28 description: 28 description:
29 Generic AHCI registers space conforming 29 Generic AHCI registers space conforming to the Serial ATA AHCI
30 specification. 30 specification.
31 31
32 reg-names: 32 reg-names:
33 description: CSR space IDs 33 description: CSR space IDs
34 contains: 34 contains:
35 const: ahci 35 const: ahci
36 36
37 interrupts: 37 interrupts:
38 description: 38 description:
39 Generic AHCI state change interrupt. Can 39 Generic AHCI state change interrupt. Can be implemented either as a
40 single line attached to the controller o 40 single line attached to the controller or as a set of the signals
41 indicating the particular port events. 41 indicating the particular port events.
42 minItems: 1 42 minItems: 1
43 maxItems: 32 43 maxItems: 32
44 44
45 ahci-supply: 45 ahci-supply:
46 description: Power regulator for AHCI cont 46 description: Power regulator for AHCI controller
47 47
48 target-supply: 48 target-supply:
49 description: Power regulator for SATA targ 49 description: Power regulator for SATA target device
50 50
51 phy-supply: 51 phy-supply:
52 description: Power regulator for SATA PHY 52 description: Power regulator for SATA PHY
53 53
54 phys: 54 phys:
55 description: Reference to the SATA PHY nod 55 description: Reference to the SATA PHY node
56 maxItems: 1 56 maxItems: 1
57 57
58 phy-names: 58 phy-names:
59 const: sata-phy 59 const: sata-phy
60 60
61 hba-cap: 61 hba-cap:
62 $ref: /schemas/types.yaml#/definitions/uin 62 $ref: /schemas/types.yaml#/definitions/uint32
63 description: 63 description:
64 Bitfield of the HBA generic platform cap 64 Bitfield of the HBA generic platform capabilities like Staggered
65 Spin-up or Mechanical Presence Switch su 65 Spin-up or Mechanical Presence Switch support. It can be used to
66 appropriately initialize the HWinit fiel 66 appropriately initialize the HWinit fields of the HBA CAP register
67 in case if the system firmware hasn't do 67 in case if the system firmware hasn't done it.
68 68
69 ports-implemented: 69 ports-implemented:
70 $ref: /schemas/types.yaml#/definitions/uin 70 $ref: /schemas/types.yaml#/definitions/uint32
71 description: 71 description:
72 Mask that indicates which ports the HBA 72 Mask that indicates which ports the HBA supports. Useful if PI is not
73 programmed by the BIOS, which is true fo 73 programmed by the BIOS, which is true for some embedded SoC's.
74 74
75 patternProperties: 75 patternProperties:
76 "^sata-port@[0-9a-f]+$": 76 "^sata-port@[0-9a-f]+$":
77 $ref: '#/$defs/ahci-port' 77 $ref: '#/$defs/ahci-port'
78 description: 78 description:
79 It is optionally possible to describe th 79 It is optionally possible to describe the ports as sub-nodes so
80 to enable each port independently when d 80 to enable each port independently when dealing with multiple PHYs.
81 81
82 required: 82 required:
83 - reg 83 - reg
84 - interrupts 84 - interrupts
85 85
86 additionalProperties: true 86 additionalProperties: true
87 87
88 $defs: 88 $defs:
89 ahci-port: 89 ahci-port:
90 $ref: /schemas/ata/sata-common.yaml#/$defs 90 $ref: /schemas/ata/sata-common.yaml#/$defs/sata-port
91 91
92 properties: 92 properties:
93 reg: 93 reg:
94 description: 94 description:
95 AHCI SATA port identifier. By design 95 AHCI SATA port identifier. By design AHCI controller can't have
96 more than 32 ports due to the CAP.NP 96 more than 32 ports due to the CAP.NP fields and PI register size
97 constraints. 97 constraints.
98 minimum: 0 98 minimum: 0
99 maximum: 31 99 maximum: 31
100 100
101 phys: 101 phys:
102 description: Individual AHCI SATA port 102 description: Individual AHCI SATA port PHY
103 maxItems: 1 103 maxItems: 1
104 104
105 phy-names: 105 phy-names:
106 description: AHCI SATA port PHY ID 106 description: AHCI SATA port PHY ID
107 const: sata-phy 107 const: sata-phy
108 108
109 target-supply: 109 target-supply:
110 description: Power regulator for SATA 110 description: Power regulator for SATA port target device
111 111
112 hba-port-cap: 112 hba-port-cap:
113 $ref: /schemas/types.yaml#/definitions 113 $ref: /schemas/types.yaml#/definitions/uint32
114 description: 114 description:
115 Bitfield of the HBA port-specific pl 115 Bitfield of the HBA port-specific platform capabilities like Hot
116 plugging, eSATA, FIS-based Switching 116 plugging, eSATA, FIS-based Switching, etc (see AHCI specification
117 for details). It can be used to init 117 for details). It can be used to initialize the HWinit fields of
118 the PxCMD register in case if the sy 118 the PxCMD register in case if the system firmware hasn't done it.
119 119
120 required: 120 required:
121 - reg 121 - reg
122 122
123 ... 123 ...
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