xref: /linux/Documentation/devicetree/bindings/display/allwinner,sun8i-r40-tcon-top.yaml (revision c0f00d270eba3cba688dd62a7b1a742ad289b879) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/allwinner,sun8i-r40-tcon-top.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Allwinner R40 TCON TOP Device Tree Bindings
8
9maintainers:
10  - Chen-Yu Tsai <wens@csie.org>
11  - Maxime Ripard <mripard@kernel.org>
12
13description: |
14  TCON TOPs main purpose is to configure whole display pipeline. It
15  determines relationships between mixers and TCONs, selects source
16  TCON for HDMI, muxes LCD and TV encoder GPIO output, selects TV
17  encoder clock source and contains additional TV TCON and DSI gates.
18
19  It allows display pipeline to be configured in very different ways:
20
21                                  / LCD0/LVDS0
22                   / [0] TCON-LCD0
23                   |              \ MIPI DSI
24   mixer0          |
25          \        / [1] TCON-LCD1 - LCD1/LVDS1
26           TCON-TOP
27          /        \ [2] TCON-TV0 [0] - TVE0/RGB
28   mixer1          |                  \
29                   |                   TCON-TOP - HDMI
30                   |                  /
31                   \ [3] TCON-TV1 [1] - TVE1/RGB
32
33  Note that both TCON TOP references same physical unit. Both mixers
34  can be connected to any TCON. Not all TCON TOP variants support all
35  features.
36
37properties:
38  "#clock-cells":
39    const: 1
40
41  compatible:
42    enum:
43      - allwinner,sun8i-r40-tcon-top
44      - allwinner,sun50i-h6-tcon-top
45
46  reg:
47    maxItems: 1
48
49  clocks:
50    minItems: 2
51    maxItems: 6
52    items:
53      - description: The TCON TOP interface clock
54      - description: The TCON TOP TV0 clock
55      - description: The TCON TOP TVE0 clock
56      - description: The TCON TOP TV1 clock
57      - description: The TCON TOP TVE1 clock
58      - description: The TCON TOP MIPI DSI clock
59
60  clock-names:
61    minItems: 2
62    maxItems: 6
63    items:
64      - const: bus
65      - const: tcon-tv0
66      - const: tve0
67      - const: tcon-tv1
68      - const: tve1
69      - const: dsi
70
71  clock-output-names:
72    minItems: 1
73    maxItems: 3
74    description: >
75      The first item is the name of the clock created for the TV0
76      channel, the second item is the name of the TCON TV1 channel
77      clock and the third one is the name of the DSI channel clock.
78
79  resets:
80    maxItems: 1
81
82  ports:
83    type: object
84    description: |
85      A ports node with endpoint definitions as defined in
86      Documentation/devicetree/bindings/media/video-interfaces.txt.
87      All ports should have only one endpoint connected to
88      remote endpoint.
89
90    properties:
91      "#address-cells":
92        const: 1
93
94      "#size-cells":
95        const: 0
96
97      port@0:
98        type: object
99        description: |
100          Input endpoint for Mixer 0 mux.
101
102      port@1:
103        type: object
104        description: |
105          Output endpoint for Mixer 0 mux
106
107        properties:
108          "#address-cells":
109            const: 1
110
111          "#size-cells":
112            const: 0
113
114          reg: true
115
116        patternProperties:
117          "^endpoint@[0-9]$":
118            type: object
119
120            properties:
121              reg:
122                description: |
123                  ID of the target TCON
124
125            required:
126              - reg
127
128        required:
129          - "#address-cells"
130          - "#size-cells"
131
132        additionalProperties: false
133
134      port@2:
135        type: object
136        description: |
137          Input endpoint for Mixer 1 mux.
138
139      port@3:
140        type: object
141        description: |
142          Output endpoint for Mixer 1 mux
143
144        properties:
145          "#address-cells":
146            const: 1
147
148          "#size-cells":
149            const: 0
150
151          reg: true
152
153        patternProperties:
154          "^endpoint@[0-9]$":
155            type: object
156
157            properties:
158              reg:
159                description: |
160                  ID of the target TCON
161
162            required:
163              - reg
164
165        required:
166          - "#address-cells"
167          - "#size-cells"
168
169        additionalProperties: false
170
171      port@4:
172        type: object
173        description: |
174          Input endpoint for HDMI mux.
175
176        properties:
177          "#address-cells":
178            const: 1
179
180          "#size-cells":
181            const: 0
182
183          reg: true
184
185        patternProperties:
186          "^endpoint@[0-9]$":
187            type: object
188
189            properties:
190              reg:
191                description: |
192                  ID of the target TCON
193
194            required:
195              - reg
196
197        required:
198          - "#address-cells"
199          - "#size-cells"
200
201        additionalProperties: false
202
203      port@5:
204        type: object
205        description: |
206          Output endpoint for HDMI mux
207
208    required:
209      - "#address-cells"
210      - "#size-cells"
211      - port@0
212      - port@1
213      - port@4
214      - port@5
215
216    additionalProperties: false
217
218required:
219  - "#clock-cells"
220  - compatible
221  - reg
222  - clocks
223  - clock-names
224  - clock-output-names
225  - resets
226  - ports
227
228additionalProperties: false
229
230if:
231  properties:
232    compatible:
233      contains:
234        const: allwinner,sun50i-h6-tcon-top
235
236then:
237  properties:
238    clocks:
239      maxItems: 2
240
241    clock-output-names:
242      maxItems: 1
243
244else:
245  properties:
246    clocks:
247      minItems: 6
248
249    clock-output-names:
250      minItems: 3
251
252    ports:
253      required:
254        - port@2
255        - port@3
256
257examples:
258  - |
259    #include <dt-bindings/interrupt-controller/arm-gic.h>
260
261    #include <dt-bindings/clock/sun8i-r40-ccu.h>
262    #include <dt-bindings/reset/sun8i-r40-ccu.h>
263
264      tcon_top: tcon-top@1c70000 {
265          compatible = "allwinner,sun8i-r40-tcon-top";
266          reg = <0x01c70000 0x1000>;
267          clocks = <&ccu CLK_BUS_TCON_TOP>,
268                   <&ccu CLK_TCON_TV0>,
269                   <&ccu CLK_TVE0>,
270                   <&ccu CLK_TCON_TV1>,
271                   <&ccu CLK_TVE1>,
272                   <&ccu CLK_DSI_DPHY>;
273          clock-names = "bus",
274                        "tcon-tv0",
275                        "tve0",
276                        "tcon-tv1",
277                        "tve1",
278                        "dsi";
279          clock-output-names = "tcon-top-tv0",
280                               "tcon-top-tv1",
281                               "tcon-top-dsi";
282          resets = <&ccu RST_BUS_TCON_TOP>;
283          #clock-cells = <1>;
284
285          ports {
286              #address-cells = <1>;
287              #size-cells = <0>;
288
289              tcon_top_mixer0_in: port@0 {
290                  reg = <0>;
291
292                  tcon_top_mixer0_in_mixer0: endpoint {
293                      remote-endpoint = <&mixer0_out_tcon_top>;
294                  };
295              };
296
297              tcon_top_mixer0_out: port@1 {
298                  #address-cells = <1>;
299                  #size-cells = <0>;
300                  reg = <1>;
301
302                  tcon_top_mixer0_out_tcon_lcd0: endpoint@0 {
303                      reg = <0>;
304                  };
305
306                  tcon_top_mixer0_out_tcon_lcd1: endpoint@1 {
307                      reg = <1>;
308                  };
309
310                  tcon_top_mixer0_out_tcon_tv0: endpoint@2 {
311                      reg = <2>;
312                      remote-endpoint = <&tcon_tv0_in_tcon_top_mixer0>;
313                  };
314
315                  tcon_top_mixer0_out_tcon_tv1: endpoint@3 {
316                      reg = <3>;
317                      remote-endpoint = <&tcon_tv1_in_tcon_top_mixer0>;
318                  };
319              };
320
321              tcon_top_mixer1_in: port@2 {
322                  #address-cells = <1>;
323                  #size-cells = <0>;
324                  reg = <2>;
325
326                  tcon_top_mixer1_in_mixer1: endpoint@1 {
327                      reg = <1>;
328                      remote-endpoint = <&mixer1_out_tcon_top>;
329                  };
330              };
331
332              tcon_top_mixer1_out: port@3 {
333                  #address-cells = <1>;
334                  #size-cells = <0>;
335                  reg = <3>;
336
337                  tcon_top_mixer1_out_tcon_lcd0: endpoint@0 {
338                      reg = <0>;
339                  };
340
341                  tcon_top_mixer1_out_tcon_lcd1: endpoint@1 {
342                      reg = <1>;
343                  };
344
345                  tcon_top_mixer1_out_tcon_tv0: endpoint@2 {
346                      reg = <2>;
347                      remote-endpoint = <&tcon_tv0_in_tcon_top_mixer1>;
348                  };
349
350                  tcon_top_mixer1_out_tcon_tv1: endpoint@3 {
351                      reg = <3>;
352                      remote-endpoint = <&tcon_tv1_in_tcon_top_mixer1>;
353                  };
354              };
355
356              tcon_top_hdmi_in: port@4 {
357                  #address-cells = <1>;
358                  #size-cells = <0>;
359                  reg = <4>;
360
361                  tcon_top_hdmi_in_tcon_tv0: endpoint@0 {
362                      reg = <0>;
363                      remote-endpoint = <&tcon_tv0_out_tcon_top>;
364                  };
365
366                  tcon_top_hdmi_in_tcon_tv1: endpoint@1 {
367                      reg = <1>;
368                      remote-endpoint = <&tcon_tv1_out_tcon_top>;
369                  };
370              };
371
372              tcon_top_hdmi_out: port@5 {
373                  reg = <5>;
374
375                  tcon_top_hdmi_out_hdmi: endpoint {
376                      remote-endpoint = <&hdmi_in_tcon_top>;
377                  };
378              };
379          };
380      };
381
382...
383