50 lines
1.7 KiB
Plaintext
50 lines
1.7 KiB
Plaintext
SMI (Smart Multimedia Interface) Local Arbiter
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The hardware block diagram please check bindings/iommu/mediatek,iommu.txt
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Required properties:
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- compatible : must be one of :
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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,mt7623-smi-larb", "mediatek,mt2701-smi-larb"
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"mediatek,mt8173-smi-larb"
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"mediatek,mt8183-smi-larb"
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- reg : the register and size of this local arbiter.
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- mediatek,smi : a phandle to the smi_common node.
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- power-domains : a phandle to the power domain of this local arbiter.
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- clocks : Must contain an entry for each entry in clock-names.
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- clock-names: must contain 2 entries, as follows:
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- "apb" : Advanced Peripheral Bus clock, It's the clock for setting
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the register.
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- "smi" : It's the clock for transfer data and command.
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and this optional clock name:
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- "gals": the clock for GALS(Global Async Local Sync).
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Here is the list which has this GALS: mt8183.
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Required property for mt2701, mt2712, mt6779 and mt7623:
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- mediatek,larb-id :the hardware id of this larb.
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Example:
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larb1: larb@16010000 {
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compatible = "mediatek,mt8173-smi-larb";
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reg = <0 0x16010000 0 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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Example for mt2701:
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larb0: larb@14010000 {
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compatible = "mediatek,mt2701-smi-larb";
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reg = <0 0x14010000 0 0x1000>;
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mediatek,smi = <&smi_common>;
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mediatek,larb-id = <0>;
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clocks = <&mmsys CLK_MM_SMI_LARB0>,
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<&mmsys CLK_MM_SMI_LARB0>;
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clock-names = "apb", "smi";
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power-domains = <&scpsys MT2701_POWER_DOMAIN_DISP>;
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};
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