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1MediaTek SCPSYS2===============3 4The System Control Processor System (SCPSYS) has several power management5related tasks in the system. The tasks include thermal measurement, dynamic6voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control.7The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power8domain control.9 10The driver implements the Generic PM domain bindings described in11power/power-domain.yaml. It provides the power domains defined in12- include/dt-bindings/power/mt8173-power.h13- include/dt-bindings/power/mt6797-power.h14- include/dt-bindings/power/mt6765-power.h15- include/dt-bindings/power/mt2701-power.h16- include/dt-bindings/power/mt2712-power.h17- include/dt-bindings/power/mt7622-power.h18 19Required properties:20- compatible: Should be one of:21 - "mediatek,mt2701-scpsys"22 - "mediatek,mt2712-scpsys"23 - "mediatek,mt6765-scpsys"24 - "mediatek,mt6797-scpsys"25 - "mediatek,mt7622-scpsys"26 - "mediatek,mt7623-scpsys", "mediatek,mt2701-scpsys": For MT7623 SoC27 - "mediatek,mt7623a-scpsys": For MT7623A SoC28 - "mediatek,mt7629-scpsys", "mediatek,mt7622-scpsys": For MT7629 SoC29 - "mediatek,mt8173-scpsys"30- #power-domain-cells: Must be 131- reg: Address range of the SCPSYS unit32- infracfg: must contain a phandle to the infracfg controller33- clock, clock-names: clocks according to the common clock binding.34 These are clocks which hardware needs to be35 enabled before enabling certain power domains.36 Required clocks for MT2701 or MT7623: "mm", "mfg", "ethif"37 Required clocks for MT2712: "mm", "mfg", "venc", "jpgdec", "audio", "vdec"38 Required clocks for MT6765: MUX: "mm", "mfg"39 CG: "mm-0", "mm-1", "mm-2", "mm-3", "isp-0",40 "isp-1", "cam-0", "cam-1", "cam-2",41 "cam-3","cam-4"42 Required clocks for MT6797: "mm", "mfg", "vdec"43 Required clocks for MT7622 or MT7629: "hif_sel"44 Required clocks for MT7623A: "ethif"45 Required clocks for MT8173: "mm", "mfg", "venc", "venc_lt"46 47Optional properties:48- vdec-supply: Power supply for the vdec power domain49- venc-supply: Power supply for the venc power domain50- isp-supply: Power supply for the isp power domain51- mm-supply: Power supply for the mm power domain52- venc_lt-supply: Power supply for the venc_lt power domain53- audio-supply: Power supply for the audio power domain54- usb-supply: Power supply for the usb power domain55- mfg_async-supply: Power supply for the mfg_async power domain56- mfg_2d-supply: Power supply for the mfg_2d power domain57- mfg-supply: Power supply for the mfg power domain58 59Example:60 61 scpsys: scpsys@10006000 {62 #power-domain-cells = <1>;63 compatible = "mediatek,mt8173-scpsys";64 reg = <0 0x10006000 0 0x1000>;65 infracfg = <&infracfg>;66 clocks = <&clk26m>,67 <&topckgen CLK_TOP_MM_SEL>;68 <&topckgen CLK_TOP_VENC_SEL>,69 <&topckgen CLK_TOP_VENC_LT_SEL>;70 clock-names = "mfg", "mm", "venc", "venc_lt";71 };72 73Example consumer:74 75 afe: mt8173-afe-pcm@11220000 {76 compatible = "mediatek,mt8173-afe-pcm";77 power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>;78 };79