1 # SPDX-License-Identifier: GPL-2.0-only OR BSD 1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/interconnec 4 $id: http://devicetree.org/schemas/interconnect/mediatek,mt8183-emi.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: MediaTek External Memory Interface (EMI 7 title: MediaTek External Memory Interface (EMI) Interconnect
8 8
9 maintainers: 9 maintainers:
10 - AngeloGioacchino Del Regno <angelogioacchin 10 - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
11 11
12 description: | 12 description: |
13 EMI interconnect providers support system ba 13 EMI interconnect providers support system bandwidth requirements through
14 Dynamic Voltage Frequency Scaling Resource C 14 Dynamic Voltage Frequency Scaling Resource Collector (DVFSRC) hardware.
15 The provider is able to communicate with the 15 The provider is able to communicate with the DVFSRC through Secure Monitor
16 Call (SMC). 16 Call (SMC).
17 17
18 ICC provider ICC Nodes 18 ICC provider ICC Nodes
19 ---- -- 19 ---- ----
20 _________ |CPU | |--- |VP 20 _________ |CPU | |--- |VPU |
21 _____ | |----- ---- | -- 21 _____ | |----- ---- | ----
22 | |->| DRAM | ---- | -- 22 | |->| DRAM | ---- | ----
23 |DRAM |->|scheduler|----- |GPU | |--- |DI 23 |DRAM |->|scheduler|----- |GPU | |--- |DISP|
24 | |->| (EMI) | ---- | -- 24 | |->| (EMI) | ---- | ----
25 |_____|->|_________|---. ----- | -- 25 |_____|->|_________|---. ----- | ----
26 /|\ `-|MMSYS|--|--- |VD 26 /|\ `-|MMSYS|--|--- |VDEC|
27 | ----- | -- 27 | ----- | ----
28 | | -- 28 | | ----
29 | change DRAM freq |--- |VE 29 | change DRAM freq |--- |VENC|
30 -------- | -- 30 -------- | ----
31 SMC --> | DVFSRC | | -- 31 SMC --> | DVFSRC | | ----
32 -------- |--- |IM 32 -------- |--- |IMG |
33 | -- 33 | ----
34 | -- 34 | ----
35 |--- |CA 35 |--- |CAM |
36 -- 36 ----
37 37
38 properties: 38 properties:
39 compatible: 39 compatible:
40 enum: 40 enum:
41 - mediatek,mt8183-emi 41 - mediatek,mt8183-emi
42 - mediatek,mt8195-emi 42 - mediatek,mt8195-emi
43 43
44 '#interconnect-cells': 44 '#interconnect-cells':
45 const: 1 45 const: 1
46 46
47 required: 47 required:
48 - compatible 48 - compatible
49 - '#interconnect-cells' 49 - '#interconnect-cells'
50 50
51 unevaluatedProperties: false 51 unevaluatedProperties: false
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.