Kernel-4.18.0-80.el8_mediatek,smi-larb

SMI (Smart Multimedia Interface) Local Arbiter

The hardware block diagram please check bindings/iommu/mediatek,iommu.txt

Required properties:

• compatible : must be one of :

    "mediatek,mt8173-smi-larb"
    "mediatek,mt2701-smi-larb"
  

• reg : the register and size of this local arbiter.
• mediatek,smi : a phandle to the smi_common node.
• power-domains : a phandle to the power domain of this local arbiter.
• clocks : Must contain an entry for each entry in clock-names.
• clock-names: must contain 2 entries, as follows:
  • “apb” : Advanced Peripheral Bus clock, It’s the clock for setting

    the register.
    

  • “smi” : It’s the clock for transfer data and command.

Required property for mt2701:

• mediatek,larb-id :the hardware id of this larb.

Example:
larb1: larb@16010000 {
compatible = “mediatek,mt8173-smi-larb”;
reg = <0 0x16010000 0 0x1000>;
mediatek,smi = <&smi_common>;
power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>;
clocks = <&vdecsys CLK_VDEC_CKEN>,
<&vdecsys CLK_VDEC_LARB_CKEN>;
clock-names = “apb”, “smi”;
};

Example for mt2701:
larb0: larb@14010000 {
compatible = “mediatek,mt2701-smi-larb”;
reg = <0 0x14010000 0 0x1000>;
mediatek,smi = <&smi_common>;
mediatek,larb-id = <0>;
clocks = <&mmsys CLK_MM_SMI_LARB0>,
<&mmsys CLK_MM_SMI_LARB0>;
clock-names = “apb”, “smi”;
power-domains = <&scpsys MT2701_POWER_DOMAIN_DISP>;
};