1 Samsung Exynos Analog to Digital Converter bindings
3 The devicetree bindings are for the new ADC driver written for
4 Exynos4 and upward SoCs from Samsung.
6 New driver handles the following
7 1. Supports ADC IF found on EXYNOS4412/EXYNOS5250
8 and future SoCs from Samsung
9 2. Add ADC driver under iio/adc framework
10 3. Also adds the Documentation for device tree bindings
13 - compatible: Must be "samsung,exynos-adc-v1"
14 for exynos4412/5250 controllers.
15 Must be "samsung,exynos-adc-v2" for
17 Must be "samsung,exynos3250-adc" for
18 controllers compatible with ADC of Exynos3250.
19 - reg: Contains ADC register address range (base address and
20 length) and the address of the phy enable register.
21 - interrupts: Contains the interrupt information for the timer. The
22 format is being dependent on which interrupt controller
23 the Samsung device uses.
24 - #io-channel-cells = <1>; As ADC has multiple outputs
25 - clocks From common clock bindings: handles to clocks specified
26 in "clock-names" property, in the same order.
27 - clock-names From common clock bindings: list of clock input names
29 - "adc" : ADC bus clock
30 - "sclk" : ADC special clock (only for Exynos3250 and
32 - vdd-supply VDD input supply.
34 Note: child nodes can be added for auto probing from device tree.
36 Example: adding device info in dtsi file
39 compatible = "samsung,exynos-adc-v1";
40 reg = <0x12D10000 0x100>, <0x10040718 0x4>;
41 interrupts = <0 106 0>;
42 #io-channel-cells = <1>;
45 clocks = <&clock 303>;
48 vdd-supply = <&buck5_reg>;
51 Example: adding device info in dtsi file for Exynos3250 with additional sclk
54 compatible = "samsung,exynos3250-adc", "samsung,exynos-adc-v2;
55 reg = <0x126C0000 0x100>, <0x10020718 0x4>;
56 interrupts = <0 137 0>;
57 #io-channel-cells = <1>;
60 clocks = <&cmu CLK_TSADC>, <&cmu CLK_SCLK_TSADC>;
61 clock-names = "adc", "sclk";
63 vdd-supply = <&buck5_reg>;
66 Example: Adding child nodes in dts file
70 /* NTC thermistor is a hwmon device */
72 compatible = "murata,ncp15wb473";
73 pullup-uv = <1800000>;
76 io-channels = <&adc 4>;
80 Note: Does not apply to ADC driver under arch/arm/plat-samsung/
81 Note: The child node can be added under the adc node or separately.