xref: /linux/Documentation/devicetree/bindings/net/fsl,fec.yaml (revision 164666fa66669d437bdcc8d5f1744a2aee73be41) 
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  - Joakim Zhang <qiangqing.zhang@nxp.com>
11
12allOf:
13  - $ref: ethernet-controller.yaml#
14
15properties:
16  compatible:
17    oneOf:
18      - enum:
19          - fsl,imx25-fec
20          - fsl,imx27-fec
21          - fsl,imx28-fec
22          - fsl,imx6q-fec
23          - fsl,mvf600-fec
24      - items:
25          - enum:
26              - fsl,imx53-fec
27              - fsl,imx6sl-fec
28          - const: fsl,imx25-fec
29      - items:
30          - enum:
31              - fsl,imx35-fec
32              - fsl,imx51-fec
33          - const: fsl,imx27-fec
34      - items:
35          - enum:
36              - fsl,imx6ul-fec
37              - fsl,imx6sx-fec
38          - const: fsl,imx6q-fec
39      - items:
40          - enum:
41              - fsl,imx7d-fec
42          - const: fsl,imx6sx-fec
43      - items:
44          - const: fsl,imx8mq-fec
45          - const: fsl,imx6sx-fec
46      - items:
47          - enum:
48              - fsl,imx8mm-fec
49              - fsl,imx8mn-fec
50              - fsl,imx8mp-fec
51          - const: fsl,imx8mq-fec
52          - const: fsl,imx6sx-fec
53      - items:
54          - const: fsl,imx8qm-fec
55          - const: fsl,imx6sx-fec
56      - items:
57          - enum:
58              - fsl,imx8qxp-fec
59          - const: fsl,imx8qm-fec
60          - const: fsl,imx6sx-fec
61
62  reg:
63    maxItems: 1
64
65  interrupts:
66    minItems: 1
67    maxItems: 4
68
69  interrupt-names:
70    oneOf:
71      - items:
72          - const: int0
73      - items:
74          - const: int0
75          - const: pps
76      - items:
77          - const: int0
78          - const: int1
79          - const: int2
80      - items:
81          - const: int0
82          - const: int1
83          - const: int2
84          - const: pps
85
86  clocks:
87    minItems: 2
88    maxItems: 5
89    description:
90      The "ipg", for MAC ipg_clk_s, ipg_clk_mac_s that are for register accessing.
91      The "ahb", for MAC ipg_clk, ipg_clk_mac that are bus clock.
92      The "ptp"(option), for IEEE1588 timer clock that requires the clock.
93      The "enet_clk_ref"(option), for MAC transmit/receiver reference clock like
94      RGMII TXC clock or RMII reference clock. It depends on board design,
95      the clock is required if RGMII TXC and RMII reference clock source from
96      SOC internal PLL.
97      The "enet_out"(option), output clock for external device, like supply clock
98      for PHY. The clock is required if PHY clock source from SOC.
99      The "enet_2x_txclk"(option), for RGMII sampling clock which fixed at 250Mhz.
100      The clock is required if SoC RGMII enable clock delay.
101
102  clock-names:
103    minItems: 2
104    maxItems: 5
105    items:
106      enum:
107        - ipg
108        - ahb
109        - ptp
110        - enet_clk_ref
111        - enet_out
112        - enet_2x_txclk
113
114  phy-mode: true
115
116  phy-handle: true
117
118  fixed-link: true
119
120  local-mac-address: true
121
122  mac-address: true
123
124  tx-internal-delay-ps:
125    enum: [0, 2000]
126
127  rx-internal-delay-ps:
128    enum: [0, 2000]
129
130  phy-supply:
131    description:
132      Regulator that powers the Ethernet PHY.
133
134  fsl,num-tx-queues:
135    $ref: /schemas/types.yaml#/definitions/uint32
136    description:
137      The property is valid for enet-avb IP, which supports hw multi queues.
138      Should specify the tx queue number, otherwise set tx queue number to 1.
139    enum: [1, 2, 3]
140
141  fsl,num-rx-queues:
142    $ref: /schemas/types.yaml#/definitions/uint32
143    description:
144      The property is valid for enet-avb IP, which supports hw multi queues.
145      Should specify the rx queue number, otherwise set rx queue number to 1.
146    enum: [1, 2, 3]
147
148  fsl,magic-packet:
149    $ref: /schemas/types.yaml#/definitions/flag
150    description:
151      If present, indicates that the hardware supports waking up via magic packet.
152
153  fsl,err006687-workaround-present:
154    $ref: /schemas/types.yaml#/definitions/flag
155    description:
156      If present indicates that the system has the hardware workaround for
157      ERR006687 applied and does not need a software workaround.
158
159  fsl,stop-mode:
160    $ref: /schemas/types.yaml#/definitions/phandle-array
161    description:
162      Register bits of stop mode control, the format is <&gpr req_gpr req_bit>.
163      gpr is the phandle to general purpose register node.
164      req_gpr is the gpr register offset for ENET stop request.
165      req_bit is the gpr bit offset for ENET stop request.
166
167  mdio:
168    $ref: mdio.yaml#
169    unevaluatedProperties: false
170    description:
171      Specifies the mdio bus in the FEC, used as a container for phy nodes.
172
173  # Deprecated optional properties:
174  # To avoid these, create a phy node according to ethernet-phy.yaml in the same
175  # directory, and point the FEC's "phy-handle" property to it. Then use
176  # the phy's reset binding, again described by ethernet-phy.yaml.
177
178  phy-reset-gpios:
179    deprecated: true
180    description:
181      Should specify the gpio for phy reset.
182
183  phy-reset-duration:
184    deprecated: true
185    description:
186      Reset duration in milliseconds.  Should present only if property
187      "phy-reset-gpios" is available.  Missing the property will have the
188      duration be 1 millisecond.  Numbers greater than 1000 are invalid
189      and 1 millisecond will be used instead.
190
191  phy-reset-active-high:
192    deprecated: true
193    description:
194      If present then the reset sequence using the GPIO specified in the
195      "phy-reset-gpios" property is reversed (H=reset state, L=operation state).
196
197  phy-reset-post-delay:
198    deprecated: true
199    description:
200      Post reset delay in milliseconds. If present then a delay of phy-reset-post-delay
201      milliseconds will be observed after the phy-reset-gpios has been toggled.
202      Can be omitted thus no delay is observed. Delay is in range of 1ms to 1000ms.
203      Other delays are invalid.
204
205required:
206  - compatible
207  - reg
208  - interrupts
209
210# FIXME: We had better set additionalProperties to false to avoid invalid or at
211# least undocumented properties. However, PHY may have a deprecated option to
212# place PHY OF properties in the MAC node, such as Micrel PHY, and we can find
213# these boards which is based on i.MX6QDL.
214additionalProperties: false
215
216examples:
217  - |
218    ethernet@83fec000 {
219      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
220      reg = <0x83fec000 0x4000>;
221      interrupts = <87>;
222      phy-mode = "mii";
223      phy-reset-gpios = <&gpio2 14 0>;
224      phy-supply = <&reg_fec_supply>;
225    };
226
227    ethernet@83fed000 {
228      compatible = "fsl,imx51-fec", "fsl,imx27-fec";
229      reg = <0x83fed000 0x4000>;
230      interrupts = <87>;
231      phy-mode = "mii";
232      phy-reset-gpios = <&gpio2 14 0>;
233      phy-supply = <&reg_fec_supply>;
234      phy-handle = <&ethphy0>;
235
236      mdio {
237        #address-cells = <1>;
238        #size-cells = <0>;
239
240        ethphy0: ethernet-phy@0 {
241          compatible = "ethernet-phy-ieee802.3-c22";
242          reg = <0>;
243        };
244      };
245    };
246