xref: /linux/Documentation/devicetree/bindings/net/ethernet-phy.yaml (revision 7a30bdd99f37352b188575b27924c407c6ddff9e) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/ethernet-phy.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ethernet PHY Generic Binding
8
9maintainers:
10  - Andrew Lunn <andrew@lunn.ch>
11  - Florian Fainelli <f.fainelli@gmail.com>
12  - Heiner Kallweit <hkallweit1@gmail.com>
13
14# The dt-schema tools will generate a select statement first by using
15# the compatible, and second by using the node name if any. In our
16# case, the node name is the one we want to match on, while the
17# compatible is optional.
18select:
19  properties:
20    $nodename:
21      pattern: "^ethernet-phy(@[a-f0-9]+)?$"
22
23  required:
24    - $nodename
25
26properties:
27  $nodename:
28    pattern: "^ethernet-phy(@[a-f0-9]+)?$"
29
30  compatible:
31    oneOf:
32      - const: ethernet-phy-ieee802.3-c22
33        description: PHYs that implement IEEE802.3 clause 22
34      - const: ethernet-phy-ieee802.3-c45
35        description: PHYs that implement IEEE802.3 clause 45
36      - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
37        description:
38          If the PHY reports an incorrect ID (or none at all) then the
39          compatible list may contain an entry with the correct PHY ID
40          in the above form.
41          The first group of digits is the 16 bit Phy Identifier 1
42          register, this is the chip vendor OUI bits 3:18. The
43          second group of digits is the Phy Identifier 2 register,
44          this is the chip vendor OUI bits 19:24, followed by 10
45          bits of a vendor specific ID.
46      - items:
47          - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
48          - const: ethernet-phy-ieee802.3-c45
49
50  reg:
51    minimum: 0
52    maximum: 31
53    description:
54      The ID number for the PHY.
55
56  interrupts:
57    maxItems: 1
58
59  max-speed:
60    enum:
61      - 10
62      - 100
63      - 1000
64      - 2500
65      - 5000
66      - 10000
67      - 20000
68      - 25000
69      - 40000
70      - 50000
71      - 56000
72      - 100000
73      - 200000
74    description:
75      Maximum PHY supported speed in Mbits / seconds.
76
77  broken-turn-around:
78    $ref: /schemas/types.yaml#definitions/flag
79    description:
80      If set, indicates the PHY device does not correctly release
81      the turn around line low at the end of a MDIO transaction.
82
83  enet-phy-lane-swap:
84    $ref: /schemas/types.yaml#definitions/flag
85    description:
86      If set, indicates the PHY will swap the TX/RX lanes to
87      compensate for the board being designed with the lanes
88      swapped.
89
90  eee-broken-100tx:
91    $ref: /schemas/types.yaml#definitions/flag
92    description:
93      Mark the corresponding energy efficient ethernet mode as
94      broken and request the ethernet to stop advertising it.
95
96  eee-broken-1000t:
97    $ref: /schemas/types.yaml#definitions/flag
98    description:
99      Mark the corresponding energy efficient ethernet mode as
100      broken and request the ethernet to stop advertising it.
101
102  eee-broken-10gt:
103    $ref: /schemas/types.yaml#definitions/flag
104    description:
105      Mark the corresponding energy efficient ethernet mode as
106      broken and request the ethernet to stop advertising it.
107
108  eee-broken-1000kx:
109    $ref: /schemas/types.yaml#definitions/flag
110    description:
111      Mark the corresponding energy efficient ethernet mode as
112      broken and request the ethernet to stop advertising it.
113
114  eee-broken-10gkx4:
115    $ref: /schemas/types.yaml#definitions/flag
116    description:
117      Mark the corresponding energy efficient ethernet mode as
118      broken and request the ethernet to stop advertising it.
119
120  eee-broken-10gkr:
121    $ref: /schemas/types.yaml#definitions/flag
122    description:
123      Mark the corresponding energy efficient ethernet mode as
124      broken and request the ethernet to stop advertising it.
125
126  phy-is-integrated:
127    $ref: /schemas/types.yaml#definitions/flag
128    description:
129      If set, indicates that the PHY is integrated into the same
130      physical package as the Ethernet MAC. If needed, muxers
131      should be configured to ensure the integrated PHY is
132      used. The absence of this property indicates the muxers
133      should be configured so that the external PHY is used.
134
135  resets:
136    maxItems: 1
137
138  reset-names:
139    const: phy
140
141  reset-gpios:
142    maxItems: 1
143    description:
144      The GPIO phandle and specifier for the PHY reset signal.
145
146  reset-assert-us:
147    description:
148      Delay after the reset was asserted in microseconds. If this
149      property is missing the delay will be skipped.
150
151  reset-deassert-us:
152    description:
153      Delay after the reset was deasserted in microseconds. If
154      this property is missing the delay will be skipped.
155
156required:
157  - reg
158
159examples:
160  - |
161    ethernet {
162        #address-cells = <1>;
163        #size-cells = <0>;
164
165        ethernet-phy@0 {
166            compatible = "ethernet-phy-id0141.0e90", "ethernet-phy-ieee802.3-c45";
167            interrupt-parent = <&PIC>;
168            interrupts = <35 1>;
169            reg = <0>;
170
171            resets = <&rst 8>;
172            reset-names = "phy";
173            reset-gpios = <&gpio1 4 1>;
174            reset-assert-us = <1000>;
175            reset-deassert-us = <2000>;
176        };
177    };
178