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 Must be "samsung,exynos7-adc" for
20 the ADC in Exynos7 and compatibles
21 Must be "samsung,s3c2410-adc" for
22 the ADC in s3c2410 and compatibles
23 Must be "samsung,s3c2416-adc" for
24 the ADC in s3c2416 and compatibles
25 Must be "samsung,s3c2440-adc" for
26 the ADC in s3c2440 and compatibles
27 Must be "samsung,s3c2443-adc" for
28 the ADC in s3c2443 and compatibles
29 Must be "samsung,s3c6410-adc" for
30 the ADC in s3c6410 and compatibles
31 Must be "samsung,s5pv210-adc" for
32 the ADC in s5pv210 and compatibles
33 - reg: List of ADC register address range
34 - The base address and range of ADC register
35 - The base address and range of ADC_PHY register (every
36 SoC except for s3c24xx/s3c64xx ADC)
37 - interrupts: Contains the interrupt information for the timer. The
38 format is being dependent on which interrupt controller
39 the Samsung device uses.
40 - #io-channel-cells = <1>; As ADC has multiple outputs
41 - clocks From common clock bindings: handles to clocks specified
42 in "clock-names" property, in the same order.
43 - clock-names From common clock bindings: list of clock input names
45 - "adc" : ADC bus clock
46 - "sclk" : ADC special clock (only for Exynos3250 and
48 - vdd-supply VDD input supply.
50 - samsung,syscon-phandle Contains the PMU system controller node
51 (To access the ADC_PHY register on Exynos5250/5420/5800/3250)
53 - has-touchscreen: If present, indicates that a touchscreen is
56 Note: child nodes can be added for auto probing from device tree.
58 Example: adding device info in dtsi file
61 compatible = "samsung,exynos-adc-v1";
62 reg = <0x12D10000 0x100>;
63 interrupts = <0 106 0>;
64 #io-channel-cells = <1>;
67 clocks = <&clock 303>;
70 vdd-supply = <&buck5_reg>;
71 samsung,syscon-phandle = <&pmu_system_controller>;
74 Example: adding device info in dtsi file for Exynos3250 with additional sclk
77 compatible = "samsung,exynos3250-adc", "samsung,exynos-adc-v2;
78 reg = <0x126C0000 0x100>;
79 interrupts = <0 137 0>;
80 #io-channel-cells = <1>;
83 clocks = <&cmu CLK_TSADC>, <&cmu CLK_SCLK_TSADC>;
84 clock-names = "adc", "sclk";
86 vdd-supply = <&buck5_reg>;
87 samsung,syscon-phandle = <&pmu_system_controller>;
90 Example: Adding child nodes in dts file
94 /* NTC thermistor is a hwmon device */
96 compatible = "murata,ncp15wb473";
97 pullup-uv = <1800000>;
100 io-channels = <&adc 4>;
104 Note: Does not apply to ADC driver under arch/arm/plat-samsung/
105 Note: The child node can be added under the adc node or separately.