47 lines
1.8 KiB
Plaintext
47 lines
1.8 KiB
Plaintext
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* Mediatek AUXADC - Analog to Digital Converter on Mediatek mobile soc (mt65xx/mt81xx/mt27xx)
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===============
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The Auxiliary Analog/Digital Converter (AUXADC) is an ADC found
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in some Mediatek SoCs which among other things measures the temperatures
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in the SoC. It can be used directly with register accesses, but it is also
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used by thermal controller which reads the temperatures from the AUXADC
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directly via its own bus interface. See
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Documentation/devicetree/bindings/thermal/mediatek-thermal.txt
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for the Thermal Controller which holds a phandle to the AUXADC.
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Required properties:
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- compatible: Should be one of:
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- "mediatek,mt2701-auxadc": For MT2701 family of SoCs
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- "mediatek,mt2712-auxadc": For MT2712 family of SoCs
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- "mediatek,mt7622-auxadc": For MT7622 family of SoCs
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- "mediatek,mt6765-auxadc": For MT6765 family of SoCs
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- "mediatek,mt8173-auxadc": For MT8173 family of SoCs
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- reg: Address range of the AUXADC unit.
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- clocks: Should contain a clock specifier for each entry in clock-names
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- clock-names: Should contain "main".
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- #io-channel-cells: Should be 1, see ../iio-bindings.txt
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Optional properties:
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- mediatek,cali-en-bit: auxadc cali on/off bit shift
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- mediatek,cali-ge-bit: auxadc cali ge bits shift
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- mediatek,cali-oe-bit: auxadc cali oe bits shift
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- mediatek,cali-efuse-reg-offset: auxadc cali efuse register offset
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- nvmem: Phandle of nvmem provider which contains efuse address
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- nvmem-names: Should be "mtk_efuse"
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Example:
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auxadc: adc@11001000 {
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compatible = "mediatek,mt6765-auxadc";
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reg = <0 0x11001000 0 0x1000>;
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clocks = <&pericfg CLK_PERI_AUXADC>;
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clock-names = "main";
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#io-channel-cells = <1>;
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mediatek,cali-en-bit = <20>;
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mediatek,cali-ge-bit = <10>;
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mediatek,cali-oe-bit = <0>;
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mediatek,cali-efuse-reg-offset = <0x1B4>;
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nvmem = <&efuse>;
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nvmem-names = "mtk_efuse";
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};
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