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/Linux-v4.19/Documentation/devicetree/bindings/sound/
Drt5663.txt23 The matrix row number of the impedance sensing table.
24 If the value is 0, it means the impedance sensing is not supported.
26 The matrix rows of the impedance sensing table are consisted by impedance
27 minimum, impedance maximun, volume, DC offset w/o and w/ mic of each L and
31 The first and second column are defined for the impedance range. If the
32 detected impedance value is in the range, then the volume value of the
37 impedance in the impedance sensing function.
Dcs43130.txt29 Boolean, define to enable headphone DC impedance measurement.
32 Boolean, define to enable headphone AC impedance measurement.
33 DC impedance must also be enabled for AC impedance measurement.
36 Define 2 DC impedance thresholds in ohms for HP output control.
40 Define the frequencies at which to measure HP AC impedance.
Dnau8824.txt13 - nuvoton,vref-impedance: VREF Impedance selection
32 …nuvoton,micbias-voltage', SAR_VOLTAGE is configured by 'nuvoton,sar-voltage', R - button impedance.
35 - nuvoton,sar-hysteresis: Button impedance measurement hysteresis.
37 - nuvoton,sar-voltage: Reference voltage for button impedance measurement.
77 nuvoton,vref-impedance = <2>;
79 // Setup 4 buttons impedance according to Android specification
Dnau8825.txt13 otherwise pin in high impedance state.
17 - nuvoton,vref-impedance: VREF Impedance selection
36 …nuvoton,micbias-voltage', SAR_VOLTAGE is configured by 'nuvoton,sar-voltage', R - button impedance.
39 - nuvoton,sar-hysteresis: Button impedance measurement hysteresis.
41 - nuvoton,sar-voltage: Reference voltage for button impedance measurement.
89 nuvoton,vref-impedance = <2>;
91 // Setup 4 buttons impedance according to Android specification
/Linux-v4.19/Documentation/devicetree/bindings/net/
Dti,dp83867.txt15 - ti,min-output-impedance - MAC Interface Impedance control to set
16 the programmable output impedance to
18 - ti,max-output-impedance - MAC Interface Impedance control to set
19 the programmable output impedance to
31 Note: ti,min-output-impedance and ti,max-output-impedance are mutually
32 exclusive. When both properties are present ti,max-output-impedance
/Linux-v4.19/arch/arm/boot/dts/
Dzynq-zc702.dts208 bias-high-impedance;
231 bias-high-impedance;
315 bias-high-impedance;
328 bias-high-impedance;
349 bias-high-impedance;
372 bias-high-impedance;
Dzynq-zc706.dts158 bias-high-impedance;
238 bias-high-impedance;
251 bias-high-impedance;
272 bias-high-impedance;
295 bias-high-impedance;
Ddra72-evm-revc.dts81 ti,min-output-impedance;
92 ti,min-output-impedance;
Dzynq-microzed.dts79 bias-high-impedance;
Ddra71-evm.dts223 ti,min-output-impedance;
232 ti,min-output-impedance;
Ddra76-evm.dts395 ti,min-output-impedance;
404 ti,min-output-impedance;
/Linux-v4.19/Documentation/hwmon/
Dda905519 Channel 1: ADC_IN1 - high impedance input (0 - 2.5V)
20 Channel 2: ADC_IN2 - high impedance input (0 - 2.5V)
21 Channel 3: ADC_IN3 - high impedance input (0 - 2.5V)
Dda905222 Channel 4: ADC_IN4 - high impedance input (0 - 2.5V)
23 Channel 5: ADC_IN5 - high impedance input (0 - 2.5V)
24 Channel 6: ADC_IN6 - high impedance input (0 - 2.5V)
/Linux-v4.19/drivers/staging/iio/
DMakefile11 obj-y += impedance-analyzer/
DKconfig12 source "drivers/staging/iio/impedance-analyzer/Kconfig"
/Linux-v4.19/Documentation/devicetree/bindings/pinctrl/
Dxlnx,zynq-pinctrl.txt40 groups, pins, bias-disable, bias-high-impedance, bias-pull-up, slew-rate,
97 bias-high-impedance;
Dimg,pistachio-pinctrl.txt42 - bias-high-impedance: Enable high-impedance mode.
Dactions,s900-pinctrl.txt154 - bias-high-impedance: No arguments. The specified pins should be configured
155 as high impedance.
/Linux-v4.19/Documentation/devicetree/bindings/phy/
Dphy-miphy28lp.txt44 - st,tx-impedance-comp : to compensate tx impedance avoiding out of range values.
/Linux-v4.19/drivers/staging/iio/Documentation/
Dsysfs-bus-iio-impedance-analyzer-ad593328 that are allowed to pass through the unknown impedance,
/Linux-v4.19/sound/soc/codecs/
Dcs43130.c1931 u16 impedance; in cs43130_update_hpload() local
1952 impedance = reg >> 3; in cs43130_update_hpload()
1954 impedance |= reg << 5; in cs43130_update_hpload()
1958 cs43130->hpload_dc[HP_LEFT] = impedance; in cs43130_update_hpload()
1960 cs43130->hpload_dc[HP_RIGHT] = impedance; in cs43130_update_hpload()
1963 impedance); in cs43130_update_hpload()
1966 cs43130->hpload_ac[ac_idx][HP_LEFT] = impedance; in cs43130_update_hpload()
1968 cs43130->hpload_ac[ac_idx][HP_RIGHT] = impedance; in cs43130_update_hpload()
1971 cs43130->ac_freq[ac_idx], !left_ch, impedance); in cs43130_update_hpload()
/Linux-v4.19/drivers/power/supply/
Ds3c_adc_battery.c128 static int calc_full_volt(int volt_val, int cur_val, int impedance) in calc_full_volt() argument
130 return volt_val + cur_val * impedance / 1000; in calc_full_volt()
/Linux-v4.19/Documentation/driver-api/gpio/
Ddriver.rst119 is not open, it will present a high-impedance (tristate) to the external rail::
173 is then halved and give high impedance instead of actively driving the line
185 high impedance (open drain), and by disabling the N-MOS transistor, the output
186 can be driven between VDD and high impedance (open source). In the first case,
202 instead it will be switched to input, as input mode is high impedance, thus
/Linux-v4.19/Documentation/devicetree/bindings/mux/
Dmux-controller.txt139 multiplexer. Using this disconnected high-impedance state as the idle state
/Linux-v4.19/drivers/staging/pi433/Documentation/
Dpi433.txt197 fifty_ohm - for antennas with an impedance of 50Ohm
198 two_hundred_ohm - for antennas with an impedance of 200Ohm

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