xref: /linux/Documentation/devicetree/bindings/net/dsa/realtek.yaml (revision cbdb1f163af2bb90d01be1f0263df1d8d5c9d9d3) 
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  $ref: /schemas/spi/spi-peripheral-props.yaml#
112  not:
113    required:
114      - mdc-gpios
115      - mdio-gpios
116      - mdio
117
118  properties:
119    mdc-gpios: false
120    mdio-gpios: false
121    mdio: false
122
123else:
124  required:
125    - mdc-gpios
126    - mdio-gpios
127    - mdio
128    - reset-gpios
129
130required:
131  - compatible
132
133    #  - mdc-gpios
134    #  - mdio-gpios
135    #  - reset-gpios
136    #  - mdio
137
138unevaluatedProperties: false
139
140examples:
141  - |
142    #include <dt-bindings/gpio/gpio.h>
143    #include <dt-bindings/interrupt-controller/irq.h>
144
145    platform {
146            switch {
147                    compatible = "realtek,rtl8366rb";
148                    /* 22 = MDIO (has input reads), 21 = MDC (clock, output only) */
149                    mdc-gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
150                    mdio-gpios = <&gpio0 22 GPIO_ACTIVE_HIGH>;
151                    reset-gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
152
153                    switch_intc1: interrupt-controller {
154                            /* GPIO 15 provides the interrupt */
155                            interrupt-parent = <&gpio0>;
156                            interrupts = <15 IRQ_TYPE_LEVEL_LOW>;
157                            interrupt-controller;
158                            #address-cells = <0>;
159                            #interrupt-cells = <1>;
160                    };
161
162                    ports {
163                            #address-cells = <1>;
164                            #size-cells = <0>;
165                            port@0 {
166                                    reg = <0>;
167                                    label = "lan0";
168                                    phy-handle = <&phy0>;
169                            };
170                            port@1 {
171                                    reg = <1>;
172                                    label = "lan1";
173                                    phy-handle = <&phy1>;
174                            };
175                            port@2 {
176                                    reg = <2>;
177                                    label = "lan2";
178                                    phy-handle = <&phy2>;
179                            };
180                            port@3 {
181                                    reg = <3>;
182                                    label = "lan3";
183                                    phy-handle = <&phy3>;
184                            };
185                            port@4 {
186                                    reg = <4>;
187                                    label = "wan";
188                                    phy-handle = <&phy4>;
189                            };
190                            port@5 {
191                                    reg = <5>;
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                                    ethernet = <&fec1>;
280                                    phy-mode = "rgmii";
281                                    tx-internal-delay-ps = <2000>;
282                                    rx-internal-delay-ps = <2000>;
283
284                                    fixed-link {
285                                            speed = <1000>;
286                                            full-duplex;
287                                            pause;
288                                    };
289                            };
290                    };
291
292                    mdio {
293                            compatible = "realtek,smi-mdio";
294                            #address-cells = <1>;
295                            #size-cells = <0>;
296
297                            ethphy0: ethernet-phy@0 {
298                                    reg = <0>;
299                                    interrupt-parent = <&switch_intc2>;
300                                    interrupts = <0>;
301                            };
302                            ethphy1: ethernet-phy@1 {
303                                    reg = <1>;
304                                    interrupt-parent = <&switch_intc2>;
305                                    interrupts = <1>;
306                            };
307                            ethphy2: ethernet-phy@2 {
308                                    reg = <2>;
309                                    interrupt-parent = <&switch_intc2>;
310                                    interrupts = <2>;
311                            };
312                            ethphy3: ethernet-phy@3 {
313                                    reg = <3>;
314                                    interrupt-parent = <&switch_intc2>;
315                                    interrupts = <3>;
316                            };
317                    };
318            };
319    };
320
321  - |
322    #include <dt-bindings/gpio/gpio.h>
323    #include <dt-bindings/interrupt-controller/irq.h>
324
325    mdio {
326            #address-cells = <1>;
327            #size-cells = <0>;
328
329            switch@29 {
330                    compatible = "realtek,rtl8365mb";
331                    reg = <29>;
332
333                    reset-gpios = <&gpio2 20 GPIO_ACTIVE_LOW>;
334
335                    switch_intc3: interrupt-controller {
336                            interrupt-parent = <&gpio0>;
337                            interrupts = <11 IRQ_TYPE_EDGE_FALLING>;
338                            interrupt-controller;
339                            #address-cells = <0>;
340                            #interrupt-cells = <1>;
341                    };
342
343                    ports {
344                            #address-cells = <1>;
345                            #size-cells = <0>;
346
347                            port@0 {
348                                    reg = <0>;
349                                    label = "lan4";
350                            };
351
352                            port@1 {
353                                    reg = <1>;
354                                    label = "lan3";
355                            };
356
357                            port@2 {
358                                    reg = <2>;
359                                    label = "lan2";
360                            };
361
362                            port@3 {
363                                    reg = <3>;
364                                    label = "lan1";
365                            };
366
367                            port@4 {
368                                    reg = <4>;
369                                    label = "wan";
370                            };
371
372                            port@7 {
373                                    reg = <7>;
374                                    ethernet = <&ethernet>;
375                                    phy-mode = "rgmii";
376                                    tx-internal-delay-ps = <2000>;
377                                    rx-internal-delay-ps = <0>;
378
379                                    fixed-link {
380                                            speed = <1000>;
381                                            full-duplex;
382                                    };
383                            };
384                    };
385            };
386      };
387