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| -rw-r--r-- | Documentation/devicetree/bindings/soc/mediatek/scpsys.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt new file mode 100644 index 000000000000..c0511142b39c --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt @@ -0,0 +1,41 @@ +MediaTek SCPSYS +=============== + +The System Control Processor System (SCPSYS) has several power management +related tasks in the system. The tasks include thermal measurement, dynamic +voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control. +The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power +domain control. + +The driver implements the Generic PM domain bindings described in +power/power_domain.txt. It provides the power domains defined in +include/dt-bindings/power/mt8173-power.h. + +Required properties: +- compatible: Must be "mediatek,mt8173-scpsys" +- #power-domain-cells: Must be 1 +- reg: Address range of the SCPSYS unit +- infracfg: must contain a phandle to the infracfg controller +- clock, clock-names: clocks according to the common clock binding. + The clocks needed "mm" and "mfg". These are the + clocks which hardware needs to be enabled before + enabling certain power domains. + +Example: + + scpsys: scpsys@10006000 { + #power-domain-cells = <1>; + compatible = "mediatek,mt8173-scpsys"; + reg = <0 0x10006000 0 0x1000>; + infracfg = <&infracfg>; + clocks = <&clk26m>, + <&topckgen CLK_TOP_MM_SEL>; + clock-names = "mfg", "mm"; + }; + +Example consumer: + + afe: mt8173-afe-pcm@11220000 { + compatible = "mediatek,mt8173-afe-pcm"; + power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>; + }; |