1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/fsl,fec.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Freescale Fast Ethernet Controller (FEC)
8
9maintainers:
10  - Shawn Guo <shawnguo@kernel.org>
11  - Wei Fang <wei.fang@nxp.com>
12  - NXP Linux Team <linux-imx@nxp.com>
13
14allOf:
15  - $ref: ethernet-controller.yaml#
16
17properties:
18  compatible:
19    oneOf:
20      - enum:
21          - fsl,imx25-fec
22          - fsl,imx27-fec
23          - fsl,imx28-fec
24          - fsl,imx6q-fec
25          - fsl,mvf600-fec
26          - fsl,s32v234-fec
27      - items:
28          - enum:
29              - fsl,imx53-fec
30              - fsl,imx6sl-fec
31          - const: fsl,imx25-fec
32      - items:
33          - enum:
34              - fsl,imx35-fec
35              - fsl,imx51-fec
36          - const: fsl,imx27-fec
37      - items:
38          - enum:
39              - fsl,imx6ul-fec
40              - fsl,imx6sx-fec
41          - const: fsl,imx6q-fec
42      - items:
43          - enum:
44              - fsl,imx7d-fec
45          - const: fsl,imx6sx-fec
46      - items:
47          - const: fsl,imx8mq-fec
48          - const: fsl,imx6sx-fec
49      - items:
50          - enum:
51              - fsl,imx8mm-fec
52              - fsl,imx8mn-fec
53              - fsl,imx8mp-fec
54              - fsl,imx93-fec
55          - const: fsl,imx8mq-fec
56          - const: fsl,imx6sx-fec
57      - items:
58          - const: fsl,imx8qm-fec
59          - const: fsl,imx6sx-fec
60      - items:
61          - enum:
62              - fsl,imx8dxl-fec
63              - fsl,imx8qxp-fec
64          - const: fsl,imx8qm-fec
65          - const: fsl,imx6sx-fec
66      - items:
67          - enum:
68              - fsl,imx8ulp-fec
69          - const: fsl,imx6ul-fec
70          - const: fsl,imx6q-fec
71
72  reg:
73    maxItems: 1
74
75  interrupts:
76    minItems: 1
77    maxItems: 4
78
79  interrupt-names:
80    oneOf:
81      - items:
82          - const: int0
83      - items:
84          - const: int0
85          - const: pps
86      - items:
87          - const: int0
88          - const: int1
89          - const: int2
90      - items:
91          - const: int0
92          - const: int1
93          - const: int2
94          - const: pps
95
96  clocks:
97    minItems: 2
98    maxItems: 5
99    description:
100      The "ipg", for MAC ipg_clk_s, ipg_clk_mac_s that are for register accessing.
101      The "ahb", for MAC ipg_clk, ipg_clk_mac that are bus clock.
102      The "ptp"(option), for IEEE1588 timer clock that requires the clock.
103      The "enet_clk_ref"(option), for MAC transmit/receiver reference clock like
104      RGMII TXC clock or RMII reference clock. It depends on board design,
105      the clock is required if RGMII TXC and RMII reference clock source from
106      SOC internal PLL.
107      The "enet_out"(option), output clock for external device, like supply clock
108      for PHY. The clock is required if PHY clock source from SOC.
109      The "enet_2x_txclk"(option), for RGMII sampling clock which fixed at 250Mhz.
110      The clock is required if SoC RGMII enable clock delay.
111
112  clock-names:
113    minItems: 2
114    maxItems: 5
115    items:
116      enum:
117        - ipg
118        - ahb
119        - ptp
120        - enet_clk_ref
121        - enet_out
122        - enet_2x_txclk
123
124  phy-mode: true
125
126  phy-handle: true
127
128  fixed-link: true
129
130  local-mac-address: true
131
132  mac-address: true
133
134  nvmem-cells: true
135
136  nvmem-cell-names: true
137
138  tx-internal-delay-ps:
139    enum: [0, 2000]
140
141  rx-internal-delay-ps:
142    enum: [0, 2000]
143
144  phy-supply:
145    description:
146      Regulator that powers the Ethernet PHY.
147
148  power-domains:
149    maxItems: 1
150
151  fsl,num-tx-queues:
152    $ref: /schemas/types.yaml#/definitions/uint32
153    description:
154      The property is valid for enet-avb IP, which supports hw multi queues.
155      Should specify the tx queue number, otherwise set tx queue number to 1.
156    enum: [1, 2, 3]
157
158  fsl,num-rx-queues:
159    $ref: /schemas/types.yaml#/definitions/uint32
160    description:
161      The property is valid for enet-avb IP, which supports hw multi queues.
162      Should specify the rx queue number, otherwise set rx queue number to 1.
163    enum: [1, 2, 3]
164
165  fsl,magic-packet:
166    $ref: /schemas/types.yaml#/definitions/flag
167    description:
168      If present, indicates that the hardware supports waking up via magic packet.
169
170  fsl,err006687-workaround-present:
171    $ref: /schemas/types.yaml#/definitions/flag
172    description:
173      If present indicates that the system has the hardware workaround for
174      ERR006687 applied and does not need a software workaround.
175
176  fsl,stop-mode:
177    $ref: /schemas/types.yaml#/definitions/phandle-array
178    items:
179      - items:
180          - description: phandle to general purpose register node
181          - description: the gpr register offset for ENET stop request
182          - description: the gpr bit offset for ENET stop request
183    description:
184      Register bits of stop mode control, the format is <&gpr req_gpr req_bit>.
185
186  mdio:
187    $ref: mdio.yaml#
188    unevaluatedProperties: false
189    description:
190      Specifies the mdio bus in the FEC, used as a container for phy nodes.
191
192  # Deprecated optional properties:
193  # To avoid these, create a phy node according to ethernet-phy.yaml in the same
194  # directory, and point the FEC's "phy-handle" property to it. Then use
195  # the phy's reset binding, again described by ethernet-phy.yaml.
196
197  phy-reset-gpios:
198    deprecated: true
199    description:
200      Should specify the gpio for phy reset.
201
202  phy-reset-duration:
203    $ref: /schemas/types.yaml#/definitions/uint32
204    deprecated: true
205    description:
206      Reset duration in milliseconds.  Should present only if property
207      "phy-reset-gpios" is available.  Missing the property will have the
208      duration be 1 millisecond.  Numbers greater than 1000 are invalid
209      and 1 millisecond will be used instead.
210
211  phy-reset-active-high:
212    type: boolean
213    deprecated: true
214    description:
215      If present then the reset sequence using the GPIO specified in the
216      "phy-reset-gpios" property is reversed (H=reset state, L=operation state).
217
218  phy-reset-post-delay:
219    $ref: /schemas/types.yaml#/definitions/uint32
220    deprecated: true
221    description:
222      Post reset delay in milliseconds. If present then a delay of phy-reset-post-delay
223      milliseconds will be observed after the phy-reset-gpios has been toggled.
224      Can be omitted thus no delay is observed. Delay is in range of 1ms to 1000ms.
225      Other delays are invalid.
226
227  iommus:
228    maxItems: 1
229
230required:
231  - compatible
232  - reg
233  - interrupts
234
235# FIXME: We had better set additionalProperties to false to avoid invalid or at
236# least undocumented properties. However, PHY may have a deprecated option to
237# place PHY OF properties in the MAC node, such as Micrel PHY, and we can find
238# these boards which is based on i.MX6QDL.
239unevaluatedProperties: false
240
241examples:
242  - |
243    ethernet@83fec000 {
244      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
245      reg = <0x83fec000 0x4000>;
246      interrupts = <87>;
247      phy-mode = "mii";
248      phy-reset-gpios = <&gpio2 14 0>;
249      phy-supply = <&reg_fec_supply>;
250    };
251
252    ethernet@83fed000 {
253      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
254      reg = <0x83fed000 0x4000>;
255      interrupts = <87>;
256      phy-mode = "mii";
257      phy-reset-gpios = <&gpio2 14 0>;
258      phy-supply = <&reg_fec_supply>;
259      phy-handle = <&ethphy0>;
260
261      mdio {
262        #address-cells = <1>;
263        #size-cells = <0>;
264
265        ethphy0: ethernet-phy@0 {
266          compatible = "ethernet-phy-ieee802.3-c22";
267          reg = <0>;
268        };
269      };
270    };
271