| # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/interconnect/mediatek,mt8183-emi.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: MediaTek External Memory Interface (EMI) Interconnect |
| |
| maintainers: |
| - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> |
| |
| description: | |
| EMI interconnect providers support system bandwidth requirements through |
| Dynamic Voltage Frequency Scaling Resource Collector (DVFSRC) hardware. |
| The provider is able to communicate with the DVFSRC through Secure Monitor |
| Call (SMC). |
| |
| ICC provider ICC Nodes |
| ---- ---- |
| _________ |CPU | |--- |VPU | |
| _____ | |----- ---- | ---- |
| | |->| DRAM | ---- | ---- |
| |DRAM |->|scheduler|----- |GPU | |--- |DISP| |
| | |->| (EMI) | ---- | ---- |
| |_____|->|_________|---. ----- | ---- |
| /|\ `-|MMSYS|--|--- |VDEC| |
| | ----- | ---- |
| | | ---- |
| | change DRAM freq |--- |VENC| |
| -------- | ---- |
| SMC --> | DVFSRC | | ---- |
| -------- |--- |IMG | |
| | ---- |
| | ---- |
| |--- |CAM | |
| ---- |
| |
| properties: |
| compatible: |
| enum: |
| - mediatek,mt8183-emi |
| - mediatek,mt8195-emi |
| |
| '#interconnect-cells': |
| const: 1 |
| |
| required: |
| - compatible |
| - '#interconnect-cells' |
| |
| unevaluatedProperties: false |
