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 and s5pv210 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 - reg: List of ADC register address range
32 - The base address and range of ADC register
33 - The base address and range of ADC_PHY register (every
34 SoC except for s3c24xx/s3c64xx ADC)
35 - interrupts: Contains the interrupt information for the timer. The
36 format is being dependent on which interrupt controller
37 the Samsung device uses.
38 - #io-channel-cells = <1>; As ADC has multiple outputs
39 - clocks From common clock bindings: handles to clocks specified
40 in "clock-names" property, in the same order.
41 - clock-names From common clock bindings: list of clock input names
43 - "adc" : ADC bus clock
44 - "sclk" : ADC special clock (only for Exynos3250 and
46 - vdd-supply VDD input supply.
48 - samsung,syscon-phandle Contains the PMU system controller node
49 (To access the ADC_PHY register on Exynos5250/5420/5800/3250)
51 - has-touchscreen: If present, indicates that a touchscreen is
54 Note: child nodes can be added for auto probing from device tree.
56 Example: adding device info in dtsi file
59 compatible = "samsung,exynos-adc-v1";
60 reg = <0x12D10000 0x100>;
61 interrupts = <0 106 0>;
62 #io-channel-cells = <1>;
65 clocks = <&clock 303>;
68 vdd-supply = <&buck5_reg>;
69 samsung,syscon-phandle = <&pmu_system_controller>;
72 Example: adding device info in dtsi file for Exynos3250 with additional sclk
75 compatible = "samsung,exynos3250-adc", "samsung,exynos-adc-v2;
76 reg = <0x126C0000 0x100>;
77 interrupts = <0 137 0>;
78 #io-channel-cells = <1>;
81 clocks = <&cmu CLK_TSADC>, <&cmu CLK_SCLK_TSADC>;
82 clock-names = "adc", "sclk";
84 vdd-supply = <&buck5_reg>;
85 samsung,syscon-phandle = <&pmu_system_controller>;
88 Example: Adding child nodes in dts file
92 /* NTC thermistor is a hwmon device */
94 compatible = "murata,ncp15wb473";
95 pullup-uv = <1800000>;
98 io-channels = <&adc 4>;
102 Note: Does not apply to ADC driver under arch/arm/plat-samsung/
103 Note: The child node can be added under the adc node or separately.