xref: /linux/Documentation/devicetree/bindings/net/dsa/realtek.yaml (revision f6154d8babbb8a98f0d3ea325aafae2e33bfd8be) 
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  - $ref: dsa.yaml#/$defs/ethernet-ports
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    additionalProperties: false
72
73    description: |
74      This defines an interrupt controller with an IRQ line (typically
75      a GPIO) that will demultiplex and handle the interrupt from the single
76      interrupt line coming out of one of the Realtek switch chips. It most
77      importantly provides link up/down interrupts to the PHY blocks inside
78      the ASIC.
79
80    properties:
81
82      interrupt-controller: true
83
84      interrupts:
85        maxItems: 1
86        description:
87          A single IRQ line from the switch, either active LOW or HIGH
88
89      '#address-cells':
90        const: 0
91
92      '#interrupt-cells':
93        const: 1
94
95    required:
96      - interrupt-controller
97      - '#address-cells'
98      - '#interrupt-cells'
99
100  mdio:
101    $ref: /schemas/net/mdio.yaml#
102    unevaluatedProperties: false
103
104    properties:
105      compatible:
106        const: realtek,smi-mdio
107
108if:
109  required:
110    - reg
111
112then:
113  $ref: /schemas/spi/spi-peripheral-props.yaml#
114  not:
115    required:
116      - mdc-gpios
117      - mdio-gpios
118      - mdio
119
120  properties:
121    mdc-gpios: false
122    mdio-gpios: false
123    mdio: false
124
125else:
126  required:
127    - mdc-gpios
128    - mdio-gpios
129    - mdio
130    - reset-gpios
131
132required:
133  - compatible
134
135    #  - mdc-gpios
136    #  - mdio-gpios
137    #  - reset-gpios
138    #  - mdio
139
140unevaluatedProperties: false
141
142examples:
143  - |
144    #include <dt-bindings/gpio/gpio.h>
145    #include <dt-bindings/interrupt-controller/irq.h>
146
147    platform {
148            switch {
149                    compatible = "realtek,rtl8366rb";
150                    /* 22 = MDIO (has input reads), 21 = MDC (clock, output only) */
151                    mdc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
152                    mdio-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
153                    reset-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
154
155                    switch_intc1: interrupt-controller {
156                            /* GPIO 15 provides the interrupt */
157                            interrupt-parent = <&gpio0>;
158                            interrupts = <15 IRQ_TYPE_LEVEL_LOW>;
159                            interrupt-controller;
160                            #address-cells = <0>;
161                            #interrupt-cells = <1>;
162                    };
163
164                    ports {
165                            #address-cells = <1>;
166                            #size-cells = <0>;
167                            port@0 {
168                                    reg = <0>;
169                                    label = "lan0";
170                                    phy-handle = <&phy0>;
171                            };
172                            port@1 {
173                                    reg = <1>;
174                                    label = "lan1";
175                                    phy-handle = <&phy1>;
176                            };
177                            port@2 {
178                                    reg = <2>;
179                                    label = "lan2";
180                                    phy-handle = <&phy2>;
181                            };
182                            port@3 {
183                                    reg = <3>;
184                                    label = "lan3";
185                                    phy-handle = <&phy3>;
186                            };
187                            port@4 {
188                                    reg = <4>;
189                                    label = "wan";
190                                    phy-handle = <&phy4>;
191                            };
192                            port@5 {
193                                    reg = <5>;
194                                    ethernet = <&gmac0>;
195                                    phy-mode = "rgmii";
196                                    fixed-link {
197                                            speed = <1000>;
198                                            full-duplex;
199                                    };
200                            };
201                    };
202
203                    mdio {
204                            compatible = "realtek,smi-mdio";
205                            #address-cells = <1>;
206                            #size-cells = <0>;
207
208                            phy0: ethernet-phy@0 {
209                                    reg = <0>;
210                                    interrupt-parent = <&switch_intc1>;
211                                    interrupts = <0>;
212                            };
213                            phy1: ethernet-phy@1 {
214                                    reg = <1>;
215                                    interrupt-parent = <&switch_intc1>;
216                                    interrupts = <1>;
217                            };
218                            phy2: ethernet-phy@2 {
219                                    reg = <2>;
220                                    interrupt-parent = <&switch_intc1>;
221                                    interrupts = <2>;
222                            };
223                            phy3: ethernet-phy@3 {
224                                    reg = <3>;
225                                    interrupt-parent = <&switch_intc1>;
226                                    interrupts = <3>;
227                            };
228                            phy4: ethernet-phy@4 {
229                                    reg = <4>;
230                                    interrupt-parent = <&switch_intc1>;
231                                    interrupts = <12>;
232                            };
233                    };
234            };
235    };
236
237  - |
238    #include <dt-bindings/gpio/gpio.h>
239    #include <dt-bindings/interrupt-controller/irq.h>
240
241    platform {
242            switch {
243                    compatible = "realtek,rtl8365mb";
244                    mdc-gpios = <&gpio1 16 GPIO_ACTIVE_HIGH>;
245                    mdio-gpios = <&gpio1 17 GPIO_ACTIVE_HIGH>;
246                    reset-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
247
248                    switch_intc2: interrupt-controller {
249                            interrupt-parent = <&gpio5>;
250                            interrupts = <1 IRQ_TYPE_LEVEL_LOW>;
251                            interrupt-controller;
252                            #address-cells = <0>;
253                            #interrupt-cells = <1>;
254                    };
255
256                    ports {
257                            #address-cells = <1>;
258                            #size-cells = <0>;
259                            port@0 {
260                                    reg = <0>;
261                                    label = "swp0";
262                                    phy-handle = <&ethphy0>;
263                            };
264                            port@1 {
265                                    reg = <1>;
266                                    label = "swp1";
267                                    phy-handle = <&ethphy1>;
268                            };
269                            port@2 {
270                                    reg = <2>;
271                                    label = "swp2";
272                                    phy-handle = <&ethphy2>;
273                            };
274                            port@3 {
275                                    reg = <3>;
276                                    label = "swp3";
277                                    phy-handle = <&ethphy3>;
278                            };
279                            port@6 {
280                                    reg = <6>;
281                                    ethernet = <&fec1>;
282                                    phy-mode = "rgmii";
283                                    tx-internal-delay-ps = <2000>;
284                                    rx-internal-delay-ps = <2000>;
285
286                                    fixed-link {
287                                            speed = <1000>;
288                                            full-duplex;
289                                            pause;
290                                    };
291                            };
292                    };
293
294                    mdio {
295                            compatible = "realtek,smi-mdio";
296                            #address-cells = <1>;
297                            #size-cells = <0>;
298
299                            ethphy0: ethernet-phy@0 {
300                                    reg = <0>;
301                                    interrupt-parent = <&switch_intc2>;
302                                    interrupts = <0>;
303                            };
304                            ethphy1: ethernet-phy@1 {
305                                    reg = <1>;
306                                    interrupt-parent = <&switch_intc2>;
307                                    interrupts = <1>;
308                            };
309                            ethphy2: ethernet-phy@2 {
310                                    reg = <2>;
311                                    interrupt-parent = <&switch_intc2>;
312                                    interrupts = <2>;
313                            };
314                            ethphy3: ethernet-phy@3 {
315                                    reg = <3>;
316                                    interrupt-parent = <&switch_intc2>;
317                                    interrupts = <3>;
318                            };
319                    };
320            };
321    };
322
323  - |
324    #include <dt-bindings/gpio/gpio.h>
325    #include <dt-bindings/interrupt-controller/irq.h>
326
327    mdio {
328            #address-cells = <1>;
329            #size-cells = <0>;
330
331            switch@29 {
332                    compatible = "realtek,rtl8365mb";
333                    reg = <29>;
334
335                    reset-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
336
337                    switch_intc3: interrupt-controller {
338                            interrupt-parent = <&gpio0>;
339                            interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
340                            interrupt-controller;
341                            #address-cells = <0>;
342                            #interrupt-cells = <1>;
343                    };
344
345                    ports {
346                            #address-cells = <1>;
347                            #size-cells = <0>;
348
349                            port@0 {
350                                    reg = <0>;
351                                    label = "lan4";
352                            };
353
354                            port@1 {
355                                    reg = <1>;
356                                    label = "lan3";
357                            };
358
359                            port@2 {
360                                    reg = <2>;
361                                    label = "lan2";
362                            };
363
364                            port@3 {
365                                    reg = <3>;
366                                    label = "lan1";
367                            };
368
369                            port@4 {
370                                    reg = <4>;
371                                    label = "wan";
372                            };
373
374                            port@7 {
375                                    reg = <7>;
376                                    ethernet = <&ethernet>;
377                                    phy-mode = "rgmii";
378                                    tx-internal-delay-ps = <2000>;
379                                    rx-internal-delay-ps = <0>;
380
381                                    fixed-link {
382                                            speed = <1000>;
383                                            full-duplex;
384                                    };
385                            };
386                    };
387            };
388      };
389