1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/ethernet-controller.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ethernet Controller Generic Binding
8
9maintainers:
10  - David S. Miller <davem@davemloft.net>
11
12properties:
13  $nodename:
14    pattern: "^ethernet(@.*)?$"
15
16  label:
17    $ref: /schemas/types.yaml#/definitions/string
18    description: Human readable label on a port of a box.
19
20  local-mac-address:
21    description:
22      Specifies the MAC address that was assigned to the network device.
23    $ref: /schemas/types.yaml#/definitions/uint8-array
24    minItems: 6
25    maxItems: 6
26
27  mac-address:
28    description:
29      Specifies the MAC address that was last used by the boot
30      program; should be used in cases where the MAC address assigned
31      to the device by the boot program is different from the
32      local-mac-address property.
33    $ref: /schemas/types.yaml#/definitions/uint8-array
34    minItems: 6
35    maxItems: 6
36
37  max-frame-size:
38    $ref: /schemas/types.yaml#/definitions/uint32
39    description:
40      Maximum transfer unit (IEEE defined MTU), rather than the
41      maximum frame size (there\'s contradiction in the Devicetree
42      Specification).
43
44  max-speed:
45    $ref: /schemas/types.yaml#/definitions/uint32
46    description:
47      Specifies maximum speed in Mbit/s supported by the device.
48
49  nvmem-cells:
50    maxItems: 1
51    description:
52      Reference to an nvmem node for the MAC address
53
54  nvmem-cell-names:
55    const: mac-address
56
57  phy-connection-type:
58    description:
59      Specifies interface type between the Ethernet device and a physical
60      layer (PHY) device.
61    enum:
62      # There is not a standard bus between the MAC and the PHY,
63      # something proprietary is being used to embed the PHY in the
64      # MAC.
65      - internal
66      - mii
67      - gmii
68      - sgmii
69      - qsgmii
70      - tbi
71      - rev-mii
72      - rmii
73      - rev-rmii
74      - moca
75
76      # RX and TX delays are added by the MAC when required
77      - rgmii
78
79      # RGMII with internal RX and TX delays provided by the PHY,
80      # the MAC should not add the RX or TX delays in this case
81      - rgmii-id
82
83      # RGMII with internal RX delay provided by the PHY, the MAC
84      # should not add an RX delay in this case
85      - rgmii-rxid
86
87      # RGMII with internal TX delay provided by the PHY, the MAC
88      # should not add an TX delay in this case
89      - rgmii-txid
90      - rtbi
91      - smii
92      - xgmii
93      - trgmii
94      - 1000base-x
95      - 2500base-x
96      - 5gbase-r
97      - rxaui
98      - xaui
99
100      # 10GBASE-KR, XFI, SFI
101      - 10gbase-kr
102      - usxgmii
103      - 10gbase-r
104      - 25gbase-r
105
106  phy-mode:
107    $ref: "#/properties/phy-connection-type"
108
109  pcs-handle:
110    $ref: /schemas/types.yaml#/definitions/phandle
111    description:
112      Specifies a reference to a node representing a PCS PHY device on a MDIO
113      bus to link with an external PHY (phy-handle) if exists.
114
115  phy-handle:
116    $ref: /schemas/types.yaml#/definitions/phandle
117    description:
118      Specifies a reference to a node representing a PHY device.
119
120  phy:
121    $ref: "#/properties/phy-handle"
122    deprecated: true
123
124  phy-device:
125    $ref: "#/properties/phy-handle"
126    deprecated: true
127
128  rx-fifo-depth:
129    $ref: /schemas/types.yaml#/definitions/uint32
130    description:
131      The size of the controller\'s receive fifo in bytes. This is used
132      for components that can have configurable receive fifo sizes,
133      and is useful for determining certain configuration settings
134      such as flow control thresholds.
135
136  rx-internal-delay-ps:
137    description: |
138      RGMII Receive Clock Delay defined in pico seconds.
139      This is used for controllers that have configurable RX internal delays.
140      If this property is present then the MAC applies the RX delay.
141
142  sfp:
143    $ref: /schemas/types.yaml#/definitions/phandle
144    description:
145      Specifies a reference to a node representing a SFP cage.
146
147  tx-fifo-depth:
148    $ref: /schemas/types.yaml#/definitions/uint32
149    description:
150      The size of the controller\'s transmit fifo in bytes. This
151      is used for components that can have configurable fifo sizes.
152
153  tx-internal-delay-ps:
154    description: |
155      RGMII Transmit Clock Delay defined in pico seconds.
156      This is used for controllers that have configurable TX internal delays.
157      If this property is present then the MAC applies the TX delay.
158
159  managed:
160    description:
161      Specifies the PHY management type. If auto is set and fixed-link
162      is not specified, it uses MDIO for management.
163    $ref: /schemas/types.yaml#/definitions/string
164    default: auto
165    enum:
166      - auto
167      - in-band-status
168
169  fixed-link:
170    allOf:
171      - if:
172          type: array
173        then:
174          deprecated: true
175          items:
176            - minimum: 0
177              maximum: 31
178              description:
179                Emulated PHY ID, choose any but unique to the all
180                specified fixed-links
181
182            - enum: [0, 1]
183              description:
184                Duplex configuration. 0 for half duplex or 1 for
185                full duplex
186
187            - enum: [10, 100, 1000, 2500, 10000]
188              description:
189                Link speed in Mbits/sec.
190
191            - enum: [0, 1]
192              description:
193                Pause configuration. 0 for no pause, 1 for pause
194
195            - enum: [0, 1]
196              description:
197                Asymmetric pause configuration. 0 for no asymmetric
198                pause, 1 for asymmetric pause
199
200
201      - if:
202          type: object
203        then:
204          properties:
205            speed:
206              description:
207                Link speed.
208              $ref: /schemas/types.yaml#/definitions/uint32
209              enum: [10, 100, 1000, 2500, 10000]
210
211            full-duplex:
212              $ref: /schemas/types.yaml#/definitions/flag
213              description:
214                Indicates that full-duplex is used. When absent, half
215                duplex is assumed.
216
217            pause:
218              $ref: /schemas/types.yaml#definitions/flag
219              description:
220                Indicates that pause should be enabled.
221
222            asym-pause:
223              $ref: /schemas/types.yaml#/definitions/flag
224              description:
225                Indicates that asym_pause should be enabled.
226
227            link-gpios:
228              maxItems: 1
229              description:
230                GPIO to determine if the link is up
231
232          required:
233            - speed
234
235additionalProperties: true
236
237...
238