diff options
| author | Harald Geyer <harald@ccbib.org> | 2016-04-10 13:03:18 +0000 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2016-04-10 14:26:25 +0100 |
| commit | 5ea9274b8613f87120bfa6b0c0abc384c26cefb9 (patch) | |
| tree | 8ad8d89658bc28d530a6c01896131334f8939c4b /Documentation/devicetree/bindings/iio | |
| parent | bc11ca4a0b84a2f2ebaca2614b92998738d13b1e (diff) | |
iio: mxs-lradc: Move binding document out of staging as well
commit f836c45922446df872250a12dd08e48978aceb2f moved mxs-lradc driver
out of staging. However the binding document was left in the old place.
Signed-off-by: Harald Geyer <harald@ccbib.org>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/iio')
| -rw-r--r-- | Documentation/devicetree/bindings/iio/adc/mxs-lradc.txt | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/adc/mxs-lradc.txt b/Documentation/devicetree/bindings/iio/adc/mxs-lradc.txt new file mode 100644 index 000000000000..555fb117d4fa --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/mxs-lradc.txt @@ -0,0 +1,47 @@ +* Freescale MXS LRADC device driver + +Required properties: +- compatible: Should be "fsl,imx23-lradc" for i.MX23 SoC and "fsl,imx28-lradc" + for i.MX28 SoC +- reg: Address and length of the register set for the device +- interrupts: Should contain the LRADC interrupts + +Optional properties: +- fsl,lradc-touchscreen-wires: Number of wires used to connect the touchscreen + to LRADC. Valid value is either 4 or 5. If this + property is not present, then the touchscreen is + disabled. 5 wires is valid for i.MX28 SoC only. +- fsl,ave-ctrl: number of samples per direction to calculate an average value. + Allowed value is 1 ... 32, default is 4 +- fsl,ave-delay: delay between consecutive samples. Allowed value is + 2 ... 2048. It is used if 'fsl,ave-ctrl' > 1, counts at + 2 kHz and its default is 2 (= 1 ms) +- fsl,settling: delay between plate switch to next sample. Allowed value is + 1 ... 2047. It counts at 2 kHz and its default is + 10 (= 5 ms) + +Example for i.MX23 SoC: + + lradc@80050000 { + compatible = "fsl,imx23-lradc"; + reg = <0x80050000 0x2000>; + interrupts = <36 37 38 39 40 41 42 43 44>; + status = "okay"; + fsl,lradc-touchscreen-wires = <4>; + fsl,ave-ctrl = <4>; + fsl,ave-delay = <2>; + fsl,settling = <10>; + }; + +Example for i.MX28 SoC: + + lradc@80050000 { + compatible = "fsl,imx28-lradc"; + reg = <0x80050000 0x2000>; + interrupts = <10 14 15 16 17 18 19 20 21 22 23 24 25>; + status = "okay"; + fsl,lradc-touchscreen-wires = <5>; + fsl,ave-ctrl = <4>; + fsl,ave-delay = <2>; + fsl,settling = <10>; + }; |