1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: "http://devicetree.org/schemas/media/mediatek,vcodec-subdev-decoder.yaml#"
$schema: "http://devicetree.org/meta-schemas/core.yaml#"
title: Mediatek Video Decode Accelerator With Multi Hardware
maintainers:
- Yunfei Dong <yunfei.dong@mediatek.com>
description: |
Mediatek Video Decode is the video decode hardware present in Mediatek
SoCs which supports high resolution decoding functionalities. Required
parent and child device node.
About the Decoder Hardware Block Diagram, please check below:
+------------------------------------------------+-------------------------------------+
| | |
| input -> lat soc HW -> lat HW -> lat buffer --|--> lat buffer -> core HW -> output |
| || || | || |
+------------||-------------||-------------------+---------------------||--------------+
|| lat || | core workqueue <parent>
-------------||-------------||-------------------|---------------------||---------------
||<------------||----------------HW index---------------->|| <child>
\/ \/ \/
+-------------------------------------------------------------+
| enable/disable |
| clk power irq iommu |
| (lat/lat soc/core0/core1) |
+-------------------------------------------------------------+
As above, there are parent and child devices, child mean each hardware. The child device
controls the information of each hardware independent which include clk/power/irq.
There are two workqueues in parent device: lat workqueue and core workqueue. They are used
to lat and core hardware deocder. Lat workqueue need to get input bitstream and lat buffer,
then enable lat to decode, writing the result to lat buffer, dislabe hardware when lat decode
done. Core workqueue need to get lat buffer and output buffer, then enable core to decode,
writing the result to output buffer, disable hardware when core decode done. These two
hardwares will decode each frame cyclically.
For the smi common may not the same for each hardware, can't combine all hardware in one node,
or leading to iommu fault when access dram data.
Lat soc is a hardware which is related with some larb(local arbiter) ports. For mt8195
platform, there are some ports like RDMA, UFO in lat soc larb, need to enable its power and
clock when lat start to work, don't have interrupt.
mt8195: lat soc HW + lat HW + core HW
mt8192: lat HW + core HW
properties:
compatible:
enum:
- mediatek,mt8192-vcodec-dec
- mediatek,mt8186-vcodec-dec
- mediatek,mt8195-vcodec-dec
reg:
maxItems: 1
iommus:
minItems: 1
maxItems: 32
description: |
List of the hardware port in respective IOMMU block for current Socs.
Refer to bindings/iommu/mediatek,iommu.yaml.
mediatek,scp:
$ref: /schemas/types.yaml#/definitions/phandle
description: |
The node of system control processor (SCP), using
the remoteproc & rpmsg framework.
dma-ranges:
maxItems: 1
description: |
Describes the physical address space of IOMMU maps to memory.
"#address-cells":
const: 2
"#size-cells":
const: 2
ranges: true
# Required child node:
patternProperties:
'^vcodec-lat@[0-9a-f]+$':
type: object
properties:
compatible:
enum:
- mediatek,mtk-vcodec-lat
- mediatek,mtk-vcodec-lat-soc
reg:
maxItems: 1
interrupts:
maxItems: 1
iommus:
minItems: 1
maxItems: 32
description: |
List of the hardware port in respective IOMMU block for current Socs.
Refer to bindings/iommu/mediatek,iommu.yaml.
clocks:
maxItems: 5
clock-names:
items:
- const: sel
- const: soc-vdec
- const: soc-lat
- const: vdec
- const: top
assigned-clocks:
maxItems: 1
assigned-clock-parents:
maxItems: 1
power-domains:
maxItems: 1
required:
- compatible
- reg
- iommus
- clocks
- clock-names
- assigned-clocks
- assigned-clock-parents
- power-domains
additionalProperties: false
'^vcodec-core@[0-9a-f]+$':
type: object
properties:
compatible:
const: mediatek,mtk-vcodec-core
reg:
maxItems: 1
interrupts:
maxItems: 1
iommus:
minItems: 1
maxItems: 32
description: |
List of the hardware port in respective IOMMU block for current Socs.
Refer to bindings/iommu/mediatek,iommu.yaml.
clocks:
maxItems: 5
clock-names:
items:
- const: sel
- const: soc-vdec
- const: soc-lat
- const: vdec
- const: top
assigned-clocks:
maxItems: 1
assigned-clock-parents:
maxItems: 1
power-domains:
maxItems: 1
required:
- compatible
- reg
- interrupts
- iommus
- clocks
- clock-names
- assigned-clocks
- assigned-clock-parents
- power-domains
additionalProperties: false
required:
- compatible
- reg
- iommus
- mediatek,scp
- dma-ranges
- ranges
if:
properties:
compatible:
contains:
enum:
- mediatek,mtk-vcodec-lat
then:
required:
- interrupts
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/memory/mt8192-larb-port.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/clock/mt8192-clk.h>
#include <dt-bindings/power/mt8192-power.h>
bus@16000000 {
#address-cells = <2>;
#size-cells = <2>;
ranges = <0 0x16000000 0x16000000 0 0x40000>;
video-codec@16000000 {
compatible = "mediatek,mt8192-vcodec-dec";
mediatek,scp = <&scp>;
iommus = <&iommu0 M4U_PORT_L4_VDEC_MC_EXT>;
dma-ranges = <0x1 0x0 0x0 0x40000000 0x0 0xfff00000>;
#address-cells = <2>;
#size-cells = <2>;
ranges = <0 0 0 0x16000000 0 0x40000>;
reg = <0 0x16000000 0 0x1000>; /* VDEC_SYS */
vcodec-lat@10000 {
compatible = "mediatek,mtk-vcodec-lat";
reg = <0 0x10000 0 0x800>;
interrupts = <GIC_SPI 426 IRQ_TYPE_LEVEL_HIGH 0>;
iommus = <&iommu0 M4U_PORT_L5_VDEC_LAT0_VLD_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_VLD2_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_AVC_MV_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_PRED_RD_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_TILE_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_WDMA_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_LAT0_RG_CTRL_DMA_EXT>,
<&iommu0 M4U_PORT_L5_VDEC_UFO_ENC_EXT>;
clocks = <&topckgen CLK_TOP_VDEC_SEL>,
<&vdecsys_soc CLK_VDEC_SOC_VDEC>,
<&vdecsys_soc CLK_VDEC_SOC_LAT>,
<&vdecsys_soc CLK_VDEC_SOC_LARB1>,
<&topckgen CLK_TOP_MAINPLL_D4>;
clock-names = "sel", "soc-vdec", "soc-lat", "vdec", "top";
assigned-clocks = <&topckgen CLK_TOP_VDEC_SEL>;
assigned-clock-parents = <&topckgen CLK_TOP_MAINPLL_D4>;
power-domains = <&spm MT8192_POWER_DOMAIN_VDEC>;
};
vcodec-core@25000 {
compatible = "mediatek,mtk-vcodec-core";
reg = <0 0x25000 0 0x1000>;
interrupts = <GIC_SPI 425 IRQ_TYPE_LEVEL_HIGH 0>;
iommus = <&iommu0 M4U_PORT_L4_VDEC_MC_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_UFO_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_PP_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_PRED_RD_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_PRED_WR_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_PPWRAP_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_TILE_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_VLD_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_VLD2_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_AVC_MV_EXT>,
<&iommu0 M4U_PORT_L4_VDEC_RG_CTRL_DMA_EXT>;
clocks = <&topckgen CLK_TOP_VDEC_SEL>,
<&vdecsys CLK_VDEC_VDEC>,
<&vdecsys CLK_VDEC_LAT>,
<&vdecsys CLK_VDEC_LARB1>,
<&topckgen CLK_TOP_MAINPLL_D4>;
clock-names = "sel", "soc-vdec", "soc-lat", "vdec", "top";
assigned-clocks = <&topckgen CLK_TOP_VDEC_SEL>;
assigned-clock-parents = <&topckgen CLK_TOP_MAINPLL_D4>;
power-domains = <&spm MT8192_POWER_DOMAIN_VDEC2>;
};
};
};
|
