xref: /linux/Documentation/devicetree/bindings/net/ethernet-phy.yaml (revision 8048b8358031ae742c1c8f16f196f6d8070bb09f) 
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-c22
49      - items:
50          - pattern: "^ethernet-phy-id[a-f0-9]{4}\\.[a-f0-9]{4}$"
51          - const: ethernet-phy-ieee802.3-c45
52
53  reg:
54    minimum: 0
55    maximum: 31
56    description:
57      The ID number for the PHY.
58
59  interrupts:
60    maxItems: 1
61
62  max-speed:
63    enum:
64      - 10
65      - 100
66      - 1000
67      - 2500
68      - 5000
69      - 10000
70      - 20000
71      - 25000
72      - 40000
73      - 50000
74      - 56000
75      - 100000
76      - 200000
77    description:
78      Maximum PHY supported speed in Mbits / seconds.
79
80  phy-10base-t1l-2.4vpp:
81    description: |
82      tristate, request/disable 2.4 Vpp operating mode. The values are:
83      0: Disable 2.4 Vpp operating mode.
84      1: Request 2.4 Vpp operating mode from link partner.
85      Absence of this property will leave configuration to default values.
86    $ref: "/schemas/types.yaml#/definitions/uint32"
87    enum: [0, 1]
88
89  broken-turn-around:
90    $ref: /schemas/types.yaml#/definitions/flag
91    description:
92      If set, indicates the PHY device does not correctly release
93      the turn around line low at end of the control phase of the
94      MDIO transaction.
95
96  enet-phy-lane-swap:
97    $ref: /schemas/types.yaml#/definitions/flag
98    description:
99      If set, indicates the PHY will swap the TX/RX lanes to
100      compensate for the board being designed with the lanes
101      swapped.
102
103  enet-phy-lane-no-swap:
104    $ref: /schemas/types.yaml#/definitions/flag
105    description:
106      If set, indicates that PHY will disable swap of the
107      TX/RX lanes. This property allows the PHY to work correcly after
108      e.g. wrong bootstrap configuration caused by issues in PCB
109      layout design.
110
111  eee-broken-100tx:
112    $ref: /schemas/types.yaml#/definitions/flag
113    description:
114      Mark the corresponding energy efficient ethernet mode as
115      broken and request the ethernet to stop advertising it.
116
117  eee-broken-1000t:
118    $ref: /schemas/types.yaml#/definitions/flag
119    description:
120      Mark the corresponding energy efficient ethernet mode as
121      broken and request the ethernet to stop advertising it.
122
123  eee-broken-10gt:
124    $ref: /schemas/types.yaml#/definitions/flag
125    description:
126      Mark the corresponding energy efficient ethernet mode as
127      broken and request the ethernet to stop advertising it.
128
129  eee-broken-1000kx:
130    $ref: /schemas/types.yaml#/definitions/flag
131    description:
132      Mark the corresponding energy efficient ethernet mode as
133      broken and request the ethernet to stop advertising it.
134
135  eee-broken-10gkx4:
136    $ref: /schemas/types.yaml#/definitions/flag
137    description:
138      Mark the corresponding energy efficient ethernet mode as
139      broken and request the ethernet to stop advertising it.
140
141  eee-broken-10gkr:
142    $ref: /schemas/types.yaml#/definitions/flag
143    description:
144      Mark the corresponding energy efficient ethernet mode as
145      broken and request the ethernet to stop advertising it.
146
147  pses:
148    $ref: /schemas/types.yaml#/definitions/phandle-array
149    maxItems: 1
150    description:
151      Specifies a reference to a node representing a Power Sourcing Equipment.
152
153  phy-is-integrated:
154    $ref: /schemas/types.yaml#/definitions/flag
155    description:
156      If set, indicates that the PHY is integrated into the same
157      physical package as the Ethernet MAC. If needed, muxers
158      should be configured to ensure the integrated PHY is
159      used. The absence of this property indicates the muxers
160      should be configured so that the external PHY is used.
161
162  resets:
163    maxItems: 1
164
165  reset-names:
166    const: phy
167
168  reset-gpios:
169    maxItems: 1
170    description:
171      The GPIO phandle and specifier for the PHY reset signal.
172
173  reset-assert-us:
174    description:
175      Delay after the reset was asserted in microseconds. If this
176      property is missing the delay will be skipped.
177
178  reset-deassert-us:
179    description:
180      Delay after the reset was deasserted in microseconds. If
181      this property is missing the delay will be skipped.
182
183  sfp:
184    $ref: /schemas/types.yaml#/definitions/phandle
185    description:
186      Specifies a reference to a node representing a SFP cage.
187
188  rx-internal-delay-ps:
189    description: |
190      RGMII Receive PHY Clock Delay defined in pico seconds.  This is used for
191      PHY's that have configurable RX internal delays.  If this property is
192      present then the PHY applies the RX delay.
193
194  tx-internal-delay-ps:
195    description: |
196      RGMII Transmit PHY Clock Delay defined in pico seconds.  This is used for
197      PHY's that have configurable TX internal delays. If this property is
198      present then the PHY applies the TX delay.
199
200required:
201  - reg
202
203additionalProperties: true
204
205examples:
206  - |
207    ethernet {
208        #address-cells = <1>;
209        #size-cells = <0>;
210
211        ethernet-phy@0 {
212            compatible = "ethernet-phy-id0141.0e90", "ethernet-phy-ieee802.3-c45";
213            interrupt-parent = <&PIC>;
214            interrupts = <35 1>;
215            reg = <0>;
216
217            resets = <&rst 8>;
218            reset-names = "phy";
219            reset-gpios = <&gpio1 4 1>;
220            reset-assert-us = <1000>;
221            reset-deassert-us = <2000>;
222        };
223    };
224