diff options
| author | Naveen Krishna Chatradhi <ch.naveen@samsung.com> | 2013-02-15 06:56:00 +0000 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2013-03-16 10:18:15 +0000 |
| commit | 10f5b14811023df0ba1a936b14880eabb6d9c199 (patch) | |
| tree | c525ef06cf65c56f5a10fa1e9a12b82ed997ee7d /Documentation/devicetree | |
| parent | 43bb786ad2886ea38364e57924c19e9d29f37201 (diff) | |
iio: adc: add exynos adc driver under iio framwork
This patch adds New driver to support:
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
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt new file mode 100644 index 000000000000..f68637861b05 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt @@ -0,0 +1,52 @@ +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). +- 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>; + 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. |