Zhiyong Tao | 3ad16a3 | 2016-08-18 15:11:35 +0800 | [diff] [blame] | 1 | * Mediatek AUXADC - Analog to Digital Converter on Mediatek mobile soc (mt65xx/mt81xx/mt27xx) |
| 2 | =============== |
| 3 | |
| 4 | The Auxiliary Analog/Digital Converter (AUXADC) is an ADC found |
| 5 | in some Mediatek SoCs which among other things measures the temperatures |
| 6 | in the SoC. It can be used directly with register accesses, but it is also |
| 7 | used by thermal controller which reads the temperatures from the AUXADC |
| 8 | directly via its own bus interface. See |
| 9 | Documentation/devicetree/bindings/thermal/mediatek-thermal.txt |
| 10 | for the Thermal Controller which holds a phandle to the AUXADC. |
| 11 | |
| 12 | Required properties: |
| 13 | - compatible: Should be one of: |
| 14 | - "mediatek,mt2701-auxadc": For MT2701 family of SoCs |
| 15 | - "mediatek,mt8173-auxadc": For MT8173 family of SoCs |
| 16 | - reg: Address range of the AUXADC unit. |
| 17 | - clocks: Should contain a clock specifier for each entry in clock-names |
| 18 | - clock-names: Should contain "main". |
| 19 | - #io-channel-cells: Should be 1, see ../iio-bindings.txt |
| 20 | |
| 21 | Example: |
| 22 | |
| 23 | auxadc: adc@11001000 { |
| 24 | compatible = "mediatek,mt2701-auxadc"; |
| 25 | reg = <0 0x11001000 0 0x1000>; |
| 26 | clocks = <&pericfg CLK_PERI_AUXADC>; |
| 27 | clock-names = "main"; |
| 28 | #io-channel-cells = <1>; |
| 29 | }; |