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- Samsung Exynos Analog to Digital Converter bindings
- This devicetree binding are for the new adc driver written fori
- Exynos4 and upward SoCs from Samsung.
- New driver handles the following
- 1. Supports ADC IF found on EXYNOS4412/EXYNOS5250
- and future SoCs from Samsung
- 2. Add ADC driver under iio/adc framework
- 3. Also adds the Documentation for device tree bindings
- Required properties:
- - compatible: Must be "samsung,exynos-adc-v1"
- for exynos4412/5250 controllers.
- Must be "samsung,exynos-adc-v2" for
- future controllers.
- - reg: Contains ADC register address range (base address and
- length) and the address of the phy enable register.
- - interrupts: Contains the interrupt information for the timer. The
- format is being dependent on which interrupt controller
- the Samsung device uses.
- - #io-channel-cells = <1>; As ADC has multiple outputs
- Note: child nodes can be added for auto probing from device tree.
- Example: adding device info in dtsi file
- adc: adc@12D10000 {
- compatible = "samsung,exynos-adc-v1";
- reg = <0x12D10000 0x100>, <0x10040718 0x4>;
- interrupts = <0 106 0>;
- #io-channel-cells = <1>;
- io-channel-ranges;
- };
- Example: Adding child nodes in dts file
- adc@12D10000 {
- /* NTC thermistor is a hwmon device */
- ncp15wb473@0 {
- compatible = "ntc,ncp15wb473";
- pullup-uV = <1800000>;
- pullup-ohm = <47000>;
- pulldown-ohm = <0>;
- io-channels = <&adc 4>;
- };
- };
- Note: Does not apply to ADC driver under arch/arm/plat-samsung/
- Note: The child node can be added under the adc node or seperately.
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