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