From d590761df4903e4fefa4b5672e3caf92738d664a Mon Sep 17 00:00:00 2001 From: Max Krummenacher Date: Sat, 16 Aug 2014 18:01:33 +0200 Subject: stmpe-adc: add device tree bindings --- .../bindings/staging/iio/adc/stmpe-adc.txt | 30 ++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 Documentation/devicetree/bindings/staging/iio/adc/stmpe-adc.txt (limited to 'Documentation') diff --git a/Documentation/devicetree/bindings/staging/iio/adc/stmpe-adc.txt b/Documentation/devicetree/bindings/staging/iio/adc/stmpe-adc.txt new file mode 100644 index 000000000000..b73a1069ed8e --- /dev/null +++ b/Documentation/devicetree/bindings/staging/iio/adc/stmpe-adc.txt @@ -0,0 +1,30 @@ +STMPE ADC driver +---------------- + +Required properties: + - compatible: "st,stmpe-adc" + +Optional properties: +Note that the ADC is shared with the STMPE touchscreen, so if using both the +settings should be the same. +If they are not, the last one to be initialized will win. +- st,sample-time: ADC converstion time in number of clock. (0 -> 36 clocks, 1 -> + 44 clocks, 2 -> 56 clocks, 3 -> 64 clocks, 4 -> 80 clocks, 5 -> 96 clocks, 6 + -> 144 clocks), recommended is 4. +- st,mod-12b: ADC Bit mode (0 -> 10bit ADC, 1 -> 12bit ADC) +- st,ref-sel: ADC reference source (0 -> internal reference, 1 -> external + reference) +- st,adc-freq: ADC Clock speed (0 -> 1.625 MHz, 1 -> 3.25 MHz, 2 || 3 -> 6.5 MHz) + +Node name must be stmpe_adc and should be child node of stmpe node to +which it belongs. + +Example: + + stmpe_adc { + compatible = "st,stmpe-adc"; + st,sample-time = <4>; + st,mod-12b = <1>; + st,ref-sel = <0>; + st,adc-freq = <1>; + }; -- cgit v1.2.3