# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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# Copyright (c) 2020 MediaTek Inc.
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/memory-controllers/mediatek,smi-larb.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SMI (Smart Multimedia Interface) Local Arbiter
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maintainers:
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- Yong Wu <yong.wu@mediatek.com>
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description: |
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The hardware block diagram please check bindings/iommu/mediatek,iommu.yaml
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properties:
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compatible:
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oneOf:
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- enum:
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- mediatek,mt2701-smi-larb
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- mediatek,mt2712-smi-larb
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- mediatek,mt6779-smi-larb
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- mediatek,mt8167-smi-larb
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- mediatek,mt8173-smi-larb
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- mediatek,mt8183-smi-larb
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- description: for mt7623
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items:
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- const: mediatek,mt7623-smi-larb
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- const: mediatek,mt2701-smi-larb
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reg:
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maxItems: 1
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clocks:
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description: |
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apb and smi are mandatory. gals(global async local sync) is optional.
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minItems: 2
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maxItems: 3
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items:
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- description: apb is Advanced Peripheral Bus clock, It's the clock for
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setting the register.
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- description: smi is the clock for transfer data and command.
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- description: the clock for gals.
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clock-names:
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minItems: 2
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maxItems: 3
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power-domains:
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maxItems: 1
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mediatek,smi:
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$ref: /schemas/types.yaml#/definitions/phandle-array
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description: a phandle to the smi_common node.
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mediatek,larb-id:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 31
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description: the hardware id of this larb. It's only required when this
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hardward id is not consecutive from its M4U point of view.
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- power-domains
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allOf:
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- if: # HW has gals
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properties:
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compatible:
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enum:
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- mediatek,mt8183-smi-larb
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then:
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properties:
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clocks:
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minItems: 2
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maxItems: 3
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clock-names:
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minItems: 2
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items:
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- const: apb
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- const: smi
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- const: gals
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else:
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properties:
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clocks:
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minItems: 2
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maxItems: 2
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clock-names:
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items:
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- const: apb
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- const: smi
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- if:
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properties:
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compatible:
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contains:
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enum:
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- mediatek,mt2701-smi-larb
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- mediatek,mt2712-smi-larb
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- mediatek,mt6779-smi-larb
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then:
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required:
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- mediatek,larb-id
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additionalProperties: false
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examples:
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- |+
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#include <dt-bindings/clock/mt8173-clk.h>
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#include <dt-bindings/power/mt8173-power.h>
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larb1: larb@16010000 {
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compatible = "mediatek,mt8173-smi-larb";
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reg = <0x16010000 0x1000>;
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mediatek,smi = <&smi_common>;
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power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>;
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clocks = <&vdecsys CLK_VDEC_CKEN>,
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<&vdecsys CLK_VDEC_LARB_CKEN>;
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clock-names = "apb", "smi";
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};
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