Documentation/devicetree/bindings/interconnect/mediatek,mt8183-emi.yaml

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