xref: /freebsd/sys/contrib/device-tree/Bindings/net/dsa/realtek.yaml (revision 29fc4075e69fd27de0cded313ac6000165d99f8b) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/net/dsa/realtek.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Realtek switches for unmanaged switches
8
9allOf:
10  - $ref: dsa.yaml#
11
12maintainers:
13  - Linus Walleij <linus.walleij@linaro.org>
14
15description:
16  Realtek advertises these chips as fast/gigabit switches or unmanaged
17  switches. They can be controlled using different interfaces, like SMI,
18  MDIO or SPI.
19
20  The SMI "Simple Management Interface" is a two-wire protocol using
21  bit-banged GPIO that while it reuses the MDIO lines MCK and MDIO does
22  not use the MDIO protocol. This binding defines how to specify the
23  SMI-based Realtek devices. The realtek-smi driver is a platform driver
24  and it must be inserted inside a platform node.
25
26  The MDIO-connected switches use MDIO protocol to access their registers.
27  The realtek-mdio driver is an MDIO driver and it must be inserted inside
28  an MDIO node.
29
30  The compatible string is only used to identify which (silicon) family the
31  switch belongs to. Roughly speaking, a family is any set of Realtek switches
32  whose chip identification register(s) have a common location and semantics.
33  The different models in a given family can be automatically disambiguated by
34  parsing the chip identification register(s) according to the given family,
35  avoiding the need for a unique compatible string for each model.
36
37properties:
38  compatible:
39    enum:
40      - realtek,rtl8365mb
41      - realtek,rtl8366rb
42    description: |
43      realtek,rtl8365mb:
44        Use with models RTL8363NB, RTL8363NB-VB, RTL8363SC, RTL8363SC-VB,
45        RTL8364NB, RTL8364NB-VB, RTL8365MB, RTL8366SC, RTL8367RB-VB, RTL8367S,
46        RTL8367SB, RTL8370MB, RTL8310SR
47      realtek,rtl8366rb:
48        Use with models RTL8366RB, RTL8366S
49
50  mdc-gpios:
51    description: GPIO line for the MDC clock line.
52    maxItems: 1
53
54  mdio-gpios:
55    description: GPIO line for the MDIO data line.
56    maxItems: 1
57
58  reset-gpios:
59    description: GPIO to be used to reset the whole device
60    maxItems: 1
61
62  realtek,disable-leds:
63    type: boolean
64    description: |
65      if the LED drivers are not used in the hardware design,
66      this will disable them so they are not turned on
67      and wasting power.
68
69  interrupt-controller:
70    type: object
71    description: |
72      This defines an interrupt controller with an IRQ line (typically
73      a GPIO) that will demultiplex and handle the interrupt from the single
74      interrupt line coming out of one of the Realtek switch chips. It most
75      importantly provides link up/down interrupts to the PHY blocks inside
76      the ASIC.
77
78    properties:
79
80      interrupt-controller: true
81
82      interrupts:
83        maxItems: 1
84        description:
85          A single IRQ line from the switch, either active LOW or HIGH
86
87      '#address-cells':
88        const: 0
89
90      '#interrupt-cells':
91        const: 1
92
93    required:
94      - interrupt-controller
95      - '#address-cells'
96      - '#interrupt-cells'
97
98  mdio:
99    $ref: /schemas/net/mdio.yaml#
100    unevaluatedProperties: false
101
102    properties:
103      compatible:
104        const: realtek,smi-mdio
105
106if:
107  required:
108    - reg
109
110then:
111  not:
112    required:
113      - mdc-gpios
114      - mdio-gpios
115      - mdio
116
117  properties:
118    mdc-gpios: false
119    mdio-gpios: false
120    mdio: false
121
122else:
123  required:
124    - mdc-gpios
125    - mdio-gpios
126    - mdio
127    - reset-gpios
128
129required:
130  - compatible
131
132    #  - mdc-gpios
133    #  - mdio-gpios
134    #  - reset-gpios
135    #  - mdio
136
137unevaluatedProperties: false
138
139examples:
140  - |
141    #include <dt-bindings/gpio/gpio.h>
142    #include <dt-bindings/interrupt-controller/irq.h>
143
144    platform {
145            switch {
146                    compatible = "realtek,rtl8366rb";
147                    /* 22 = MDIO (has input reads), 21 = MDC (clock, output only) */
148                    mdc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
149                    mdio-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
150                    reset-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
151
152                    switch_intc1: interrupt-controller {
153                            /* GPIO 15 provides the interrupt */
154                            interrupt-parent = <&gpio0>;
155                            interrupts = <15 IRQ_TYPE_LEVEL_LOW>;
156                            interrupt-controller;
157                            #address-cells = <0>;
158                            #interrupt-cells = <1>;
159                    };
160
161                    ports {
162                            #address-cells = <1>;
163                            #size-cells = <0>;
164                            port@0 {
165                                    reg = <0>;
166                                    label = "lan0";
167                                    phy-handle = <&phy0>;
168                            };
169                            port@1 {
170                                    reg = <1>;
171                                    label = "lan1";
172                                    phy-handle = <&phy1>;
173                            };
174                            port@2 {
175                                    reg = <2>;
176                                    label = "lan2";
177                                    phy-handle = <&phy2>;
178                            };
179                            port@3 {
180                                    reg = <3>;
181                                    label = "lan3";
182                                    phy-handle = <&phy3>;
183                            };
184                            port@4 {
185                                    reg = <4>;
186                                    label = "wan";
187                                    phy-handle = <&phy4>;
188                            };
189                            port@5 {
190                                    reg = <5>;
191                                    label = "cpu";
192                                    ethernet = <&gmac0>;
193                                    phy-mode = "rgmii";
194                                    fixed-link {
195                                            speed = <1000>;
196                                            full-duplex;
197                                    };
198                            };
199                    };
200
201                    mdio {
202                            compatible = "realtek,smi-mdio";
203                            #address-cells = <1>;
204                            #size-cells = <0>;
205
206                            phy0: ethernet-phy@0 {
207                                    reg = <0>;
208                                    interrupt-parent = <&switch_intc1>;
209                                    interrupts = <0>;
210                            };
211                            phy1: ethernet-phy@1 {
212                                    reg = <1>;
213                                    interrupt-parent = <&switch_intc1>;
214                                    interrupts = <1>;
215                            };
216                            phy2: ethernet-phy@2 {
217                                    reg = <2>;
218                                    interrupt-parent = <&switch_intc1>;
219                                    interrupts = <2>;
220                            };
221                            phy3: ethernet-phy@3 {
222                                    reg = <3>;
223                                    interrupt-parent = <&switch_intc1>;
224                                    interrupts = <3>;
225                            };
226                            phy4: ethernet-phy@4 {
227                                    reg = <4>;
228                                    interrupt-parent = <&switch_intc1>;
229                                    interrupts = <12>;
230                            };
231                    };
232            };
233    };
234
235  - |
236    #include <dt-bindings/gpio/gpio.h>
237    #include <dt-bindings/interrupt-controller/irq.h>
238
239    platform {
240            switch {
241                    compatible = "realtek,rtl8365mb";
242                    mdc-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
243                    mdio-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
244                    reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
245
246                    switch_intc2: interrupt-controller {
247                            interrupt-parent = <&gpio5>;
248                            interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
249                            interrupt-controller;
250                            #address-cells = <0>;
251                            #interrupt-cells = <1>;
252                    };
253
254                    ports {
255                            #address-cells = <1>;
256                            #size-cells = <0>;
257                            port@0 {
258                                    reg = <0>;
259                                    label = "swp0";
260                                    phy-handle = <&ethphy0>;
261                            };
262                            port@1 {
263                                    reg = <1>;
264                                    label = "swp1";
265                                    phy-handle = <&ethphy1>;
266                            };
267                            port@2 {
268                                    reg = <2>;
269                                    label = "swp2";
270                                    phy-handle = <&ethphy2>;
271                            };
272                            port@3 {
273                                    reg = <3>;
274                                    label = "swp3";
275                                    phy-handle = <&ethphy3>;
276                            };
277                            port@6 {
278                                    reg = <6>;
279                                    label = "cpu";
280                                    ethernet = <&fec1>;
281                                    phy-mode = "rgmii";
282                                    tx-internal-delay-ps = <2000>;
283                                    rx-internal-delay-ps = <2000>;
284
285                                    fixed-link {
286                                            speed = <1000>;
287                                            full-duplex;
288                                            pause;
289                                    };
290                            };
291                    };
292
293                    mdio {
294                            compatible = "realtek,smi-mdio";
295                            #address-cells = <1>;
296                            #size-cells = <0>;
297
298                            ethphy0: ethernet-phy@0 {
299                                    reg = <0>;
300                                    interrupt-parent = <&switch_intc2>;
301                                    interrupts = <0>;
302                            };
303                            ethphy1: ethernet-phy@1 {
304                                    reg = <1>;
305                                    interrupt-parent = <&switch_intc2>;
306                                    interrupts = <1>;
307                            };
308                            ethphy2: ethernet-phy@2 {
309                                    reg = <2>;
310                                    interrupt-parent = <&switch_intc2>;
311                                    interrupts = <2>;
312                            };
313                            ethphy3: ethernet-phy@3 {
314                                    reg = <3>;
315                                    interrupt-parent = <&switch_intc2>;
316                                    interrupts = <3>;
317                            };
318                    };
319            };
320    };
321
322  - |
323    #include <dt-bindings/gpio/gpio.h>
324    #include <dt-bindings/interrupt-controller/irq.h>
325
326    mdio {
327            #address-cells = <1>;
328            #size-cells = <0>;
329
330            switch@29 {
331                    compatible = "realtek,rtl8365mb";
332                    reg = <29>;
333
334                    reset-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
335
336                    switch_intc3: interrupt-controller {
337                            interrupt-parent = <&gpio0>;
338                            interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
339                            interrupt-controller;
340                            #address-cells = <0>;
341                            #interrupt-cells = <1>;
342                    };
343
344                    ports {
345                            #address-cells = <1>;
346                            #size-cells = <0>;
347
348                            port@0 {
349                                    reg = <0>;
350                                    label = "lan4";
351                            };
352
353                            port@1 {
354                                    reg = <1>;
355                                    label = "lan3";
356                            };
357
358                            port@2 {
359                                    reg = <2>;
360                                    label = "lan2";
361                            };
362
363                            port@3 {
364                                    reg = <3>;
365                                    label = "lan1";
366                            };
367
368                            port@4 {
369                                    reg = <4>;
370                                    label = "wan";
371                            };
372
373                            port@7 {
374                                    reg = <7>;
375                                    ethernet = <&ethernet>;
376                                    phy-mode = "rgmii";
377                                    tx-internal-delay-ps = <2000>;
378                                    rx-internal-delay-ps = <0>;
379
380                                    fixed-link {
381                                            speed = <1000>;
382                                            full-duplex;
383                                    };
384                            };
385                    };
386            };
387      };
388