Thanks for the comments! On 10/12/2014 02:05 AM, Hartmut Knaack wrote: > Hi, > two small issues inline. > Stanimir Varbanov schrieb am 24.09.2014 14:56: >> Document DT binding for Qualcomm SPMI PMIC voltage ADC >> driver. >> >> Signed-off-by: Stanimir Varbanov <svarbanov@xxxxxxxxxx> >> Signed-off-by: Ivan T. Ivanov <iivanov@xxxxxxxxxx> >> --- >> .../devicetree/bindings/iio/adc/qcom,spmi-vadc.txt | 130 ++++++++++++++++++++ >> 1 files changed, 130 insertions(+), 0 deletions(-) >> create mode 100644 Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt >> >> diff --git a/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt >> new file mode 100644 >> index 0000000..fa30300 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/iio/adc/qcom,spmi-vadc.txt >> @@ -0,0 +1,130 @@ >> +Qualcomm's SPMI PMIC voltage ADC >> + >> +SPMI PMIC voltage ADC (VADC) provides interface to clients to read >> +voltage. A 15 bit ADC is used for voltage measurements. There are multiple >> +peripherals to the VADC and the scope of the driver is to provide interface >> +for the USR peripheral of the VADC. >> + >> +VADC node: >> + >> +- compatible: >> + Usage: required >> + Value type: <string> >> + Definition: Should contain "qcom,spmi-vadc". >> + >> +- reg: >> + Usage: required >> + Value type: <u32> >> + Definition: Base address in the SPMI PMIC register map. >> + >> +- address-cells: >> + Usage: required >> + Value type: <u32> >> + Definition: Must be one. >> + >> +- size-cells: >> + Usage: required >> + Value type: <u32> >> + Definition: Must be zero. >> + >> +- interrupts: >> + Usage: optional >> + Value type: <prop-encoded-array> >> + Definition: End of conversion interrupt number. If this property does >> + not exist polling will be used instead. >> + >> +- interrupt-names: >> + Usage: optional >> + Value type: <string> >> + Definition: Should contain the interrupt name "eoc" (end of conversion). >> + >> +Channel node properties: >> + >> +- reg: >> + Usage: required >> + Value type: <u32> >> + Definition: AMUX channel number. >> + See include/dt-bindings/iio/qcom,spmi-pmic-vadc.h >> + >> +- qcom,decimation: >> + Usage: optional >> + Value type: <u32> >> + Definition: Sampling rate to use for the individual channel measurement. >> + Quicker measurements can be made by reducing decimation ratio. >> + Valid values are 512, 1024, 2048, 4096. >> + If property is not found, default value of 512 will be used. >> + >> +- qcom,pre-scaling: >> + Usage: optional >> + Value type: <u32 array> >> + Definition: Used for scaling the channel input signal before the signal is >> + fed to VADC. The configuration for this node is to know the >> + pre-determined ratio and use it for post scaling. Select one from >> + the following options. >> + <1 1>, <1 3>, <1 4>, <1 6>, <1 20>, <1 8>, <10 81>, <1 10> >> + If property is not found default value depending of chip will be used. >> + >> +- qcom,ratiometric: >> + Usage: optional >> + Value type: <empty> >> + Definition: Channel calibration type. If this property is specified >> + VADC will use the VDD reference(1.8V) and GND for channel > Missing whitespace before opening parenthesis. >> + calibration. If property is not found, channel will be >> + calibrated with 625mV and 1.25V reference channels. > There is a slight majority in using V instead of mv (2 : 1), so why not express everything in V? No worries, will correct. -- regards, Stan -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
