Message ID | 20160627082718.2087-2-sean.nyekjaer@prevas.dk |
---|---|
State | Not Applicable, archived |
Headers | show |
On 27/06/16 09:27, Sean Nyekjaer wrote: > Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> Please remember to pick up previous Acks etc such as Rob's when posting a new version with changes that don't affect it. Applied both to the togreg branch of iio.git. Thanks, Jonathan > --- > Changes since v4: > - Appended -hz to dc-dc-freq > - Added adi,dc-dc-max-microvolt > - Added reg property > > Changes since v3: > - replaced '_' with '-' > - Now used actual values instead of register values. > > Changes since v2: > - Removed defines, alot easier to read > > .../devicetree/bindings/iio/dac/ad5755.txt | 124 +++++++++++++++++++++ > 1 file changed, 124 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/dac/ad5755.txt > > diff --git a/Documentation/devicetree/bindings/iio/dac/ad5755.txt b/Documentation/devicetree/bindings/iio/dac/ad5755.txt > new file mode 100644 > index 0000000..f0bbd7e > --- /dev/null > +++ b/Documentation/devicetree/bindings/iio/dac/ad5755.txt > @@ -0,0 +1,124 @@ > +* Analog Device AD5755 IIO Multi-Channel DAC Linux Driver > + > +Required properties: > + - compatible: Has to contain one of the following: > + adi,ad5755 > + adi,ad5755-1 > + adi,ad5757 > + adi,ad5735 > + adi,ad5737 > + > + - reg: spi chip select number for the device > + - spi-cpha or spi-cpol: is the only modes that is supported > + > +Recommended properties: > + - spi-max-frequency: Definition as per > + Documentation/devicetree/bindings/spi/spi-bus.txt > + > +Optional properties: > +See include/dt-bindings/iio/ad5755.h > + - adi,ext-dc-dc-compenstation-resistor: boolean set if the hardware have an > + external resistor and thereby bypasses > + the internal compensation resistor. > + - adi,dc-dc-phase: > + Valid values for DC DC Phase control is: > + 0: All dc-to-dc converters clock on the same edge. > + 1: Channel A and Channel B clock on the same edge, > + Channel C and Channel D clock on opposite edges. > + 2: Channel A and Channel C clock on the same edge, > + Channel B and Channel D clock on opposite edges. > + 3: Channel A, Channel B, Channel C, and Channel D > + clock 90 degrees out of phase from each other. > + - adi,dc-dc-freq-hz: > + Valid values for DC DC frequency is [Hz]: > + 250000 > + 410000 > + 650000 > + - adi,dc-dc-max-microvolt: > + Valid values for the maximum allowed Vboost voltage supplied by > + the dc-to-dc converter is: > + 23000000 > + 24500000 > + 27000000 > + 29500000 > + > +Optional for every channel: > + - adi,mode: > + Valid values for DAC modes is: > + 0: 0 V to 5 V voltage range. > + 1: 0 V to 10 V voltage range. > + 2: Plus minus 5 V voltage range. > + 3: Plus minus 10 V voltage range. > + 4: 4 mA to 20 mA current range. > + 5: 0 mA to 20 mA current range. > + 6: 0 mA to 24 mA current range. > + - adi,ext-current-sense-resistor: boolean set if the hardware a external > + current sense resistor. > + - adi,enable-voltage-overrange: boolean enable voltage overrange > + - adi,slew: Array of slewrate settings should contain 3 fields: > + 1: Should be either 0 or 1 in order to enable or disable slewrate. > + 2: Slew rate settings: > + Valid values for the slew rate update frequency: > + 64000 > + 32000 > + 16000 > + 8000 > + 4000 > + 2000 > + 1000 > + 500 > + 250 > + 125 > + 64 > + 32 > + 16 > + 8 > + 4 > + 0 > + 3: Slew step size: > + Valid values for the step size LSBs: > + 1 > + 2 > + 4 > + 16 > + 32 > + 64 > + 128 > + 256 > + > +Example: > +dac@0 { > + #address-cells = <1>; > + #size-cells = <0>; > + compatible = "adi,ad5755"; > + reg = <0>; > + spi-max-frequency = <1000000>; > + spi-cpha; > + adi,dc-dc-phase = <0>; > + adi,dc-dc-freq-hz = <410000>; > + adi,dc-dc-max-microvolt = <23000000>; > + channel@0 { > + reg = <0>; > + adi,mode = <4>; > + adi,ext-current-sense-resistor; > + adi,slew = <0 64000 1>; > + }; > + channel@1 { > + reg = <1>; > + adi,mode = <4>; > + adi,ext-current-sense-resistor; > + adi,slew = <0 64000 1>; > + }; > + channel@2 { > + reg = <2>; > + adi,mode = <4>; > + adi,ext-current-sense-resistor; > + adi,slew = <0 64000 1>; > + }; > + channel@3 { > + reg = <3>; > + adi,mode = <4>; > + adi,ext-current-sense-resistor; > + adi,slew = <0 64000 1>; > + }; > +}; > -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/iio/dac/ad5755.txt b/Documentation/devicetree/bindings/iio/dac/ad5755.txt new file mode 100644 index 0000000..f0bbd7e --- /dev/null +++ b/Documentation/devicetree/bindings/iio/dac/ad5755.txt @@ -0,0 +1,124 @@ +* Analog Device AD5755 IIO Multi-Channel DAC Linux Driver + +Required properties: + - compatible: Has to contain one of the following: + adi,ad5755 + adi,ad5755-1 + adi,ad5757 + adi,ad5735 + adi,ad5737 + + - reg: spi chip select number for the device + - spi-cpha or spi-cpol: is the only modes that is supported + +Recommended properties: + - spi-max-frequency: Definition as per + Documentation/devicetree/bindings/spi/spi-bus.txt + +Optional properties: +See include/dt-bindings/iio/ad5755.h + - adi,ext-dc-dc-compenstation-resistor: boolean set if the hardware have an + external resistor and thereby bypasses + the internal compensation resistor. + - adi,dc-dc-phase: + Valid values for DC DC Phase control is: + 0: All dc-to-dc converters clock on the same edge. + 1: Channel A and Channel B clock on the same edge, + Channel C and Channel D clock on opposite edges. + 2: Channel A and Channel C clock on the same edge, + Channel B and Channel D clock on opposite edges. + 3: Channel A, Channel B, Channel C, and Channel D + clock 90 degrees out of phase from each other. + - adi,dc-dc-freq-hz: + Valid values for DC DC frequency is [Hz]: + 250000 + 410000 + 650000 + - adi,dc-dc-max-microvolt: + Valid values for the maximum allowed Vboost voltage supplied by + the dc-to-dc converter is: + 23000000 + 24500000 + 27000000 + 29500000 + +Optional for every channel: + - adi,mode: + Valid values for DAC modes is: + 0: 0 V to 5 V voltage range. + 1: 0 V to 10 V voltage range. + 2: Plus minus 5 V voltage range. + 3: Plus minus 10 V voltage range. + 4: 4 mA to 20 mA current range. + 5: 0 mA to 20 mA current range. + 6: 0 mA to 24 mA current range. + - adi,ext-current-sense-resistor: boolean set if the hardware a external + current sense resistor. + - adi,enable-voltage-overrange: boolean enable voltage overrange + - adi,slew: Array of slewrate settings should contain 3 fields: + 1: Should be either 0 or 1 in order to enable or disable slewrate. + 2: Slew rate settings: + Valid values for the slew rate update frequency: + 64000 + 32000 + 16000 + 8000 + 4000 + 2000 + 1000 + 500 + 250 + 125 + 64 + 32 + 16 + 8 + 4 + 0 + 3: Slew step size: + Valid values for the step size LSBs: + 1 + 2 + 4 + 16 + 32 + 64 + 128 + 256 + +Example: +dac@0 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "adi,ad5755"; + reg = <0>; + spi-max-frequency = <1000000>; + spi-cpha; + adi,dc-dc-phase = <0>; + adi,dc-dc-freq-hz = <410000>; + adi,dc-dc-max-microvolt = <23000000>; + channel@0 { + reg = <0>; + adi,mode = <4>; + adi,ext-current-sense-resistor; + adi,slew = <0 64000 1>; + }; + channel@1 { + reg = <1>; + adi,mode = <4>; + adi,ext-current-sense-resistor; + adi,slew = <0 64000 1>; + }; + channel@2 { + reg = <2>; + adi,mode = <4>; + adi,ext-current-sense-resistor; + adi,slew = <0 64000 1>; + }; + channel@3 { + reg = <3>; + adi,mode = <4>; + adi,ext-current-sense-resistor; + adi,slew = <0 64000 1>; + }; +};
Signed-off-by: Sean Nyekjaer <sean.nyekjaer@prevas.dk> --- Changes since v4: - Appended -hz to dc-dc-freq - Added adi,dc-dc-max-microvolt - Added reg property Changes since v3: - replaced '_' with '-' - Now used actual values instead of register values. Changes since v2: - Removed defines, alot easier to read .../devicetree/bindings/iio/dac/ad5755.txt | 124 +++++++++++++++++++++ 1 file changed, 124 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/dac/ad5755.txt