1SMI (Smart Multimedia Interface) Local Arbiter 2 3The hardware block diagram please check bindings/iommu/mediatek,iommu.txt 4 5Required properties: 6- compatible : must be one of : 7 "mediatek,mt2701-smi-larb" 8 "mediatek,mt2712-smi-larb" 9 "mediatek,mt6779-smi-larb" 10 "mediatek,mt7623-smi-larb", "mediatek,mt2701-smi-larb" 11 "mediatek,mt8173-smi-larb" 12 "mediatek,mt8183-smi-larb" 13- reg : the register and size of this local arbiter. 14- mediatek,smi : a phandle to the smi_common node. 15- power-domains : a phandle to the power domain of this local arbiter. 16- clocks : Must contain an entry for each entry in clock-names. 17- clock-names: must contain 2 entries, as follows: 18 - "apb" : Advanced Peripheral Bus clock, It's the clock for setting 19 the register. 20 - "smi" : It's the clock for transfer data and command. 21 and this optional clock name: 22 - "gals": the clock for GALS(Global Async Local Sync). 23 Here is the list which has this GALS: mt8183. 24 25Required property for mt2701, mt2712, mt6779 and mt7623: 26- mediatek,larb-id :the hardware id of this larb. 27 28Example: 29 larb1: larb@16010000 { 30 compatible = "mediatek,mt8173-smi-larb"; 31 reg = <0 0x16010000 0 0x1000>; 32 mediatek,smi = <&smi_common>; 33 power-domains = <&scpsys MT8173_POWER_DOMAIN_VDEC>; 34 clocks = <&vdecsys CLK_VDEC_CKEN>, 35 <&vdecsys CLK_VDEC_LARB_CKEN>; 36 clock-names = "apb", "smi"; 37 }; 38 39Example for mt2701: 40 larb0: larb@14010000 { 41 compatible = "mediatek,mt2701-smi-larb"; 42 reg = <0 0x14010000 0 0x1000>; 43 mediatek,smi = <&smi_common>; 44 mediatek,larb-id = <0>; 45 clocks = <&mmsys CLK_MM_SMI_LARB0>, 46 <&mmsys CLK_MM_SMI_LARB0>; 47 clock-names = "apb", "smi"; 48 power-domains = <&scpsys MT2701_POWER_DOMAIN_DISP>; 49 }; 50