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/linux-6.15/Documentation/devicetree/bindings/sound/
H A Drt5663.txt27 The matrix row number of the impedance sensing table.
28 If the value is 0, it means the impedance sensing is not supported.
30 The matrix rows of the impedance sensing table are consisted by impedance
31 minimum, impedance maximum, volume, DC offset w/o and w/ mic of each L and
35 The first and second column are defined for the impedance range. If the
36 detected impedance value is in the range, then the volume value of the
41 impedance in the impedance sensing function.
H A 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.
H A Dnuvoton,nau8824.yaml46 nuvoton,vref-impedance:
87 'nuvoton,sar-voltage', R - button impedance.
99 Button impedance measurement hysteresis.
105 Reference voltage for button impedance measurement.
178 nuvoton,vref-impedance = <2>;
181 // Setup 4 buttons impedance according to Android specification
H A Dcirrus,cs530x.yaml43 Sets input channels one and two to high impedance.
48 Sets input channels three and four to high impedance.
53 Sets input channels five and six to high impedance.
58 Sets input channels seven and eight to high impedance.
H A Dnuvoton,nau8825.yaml34 If set - pin pull enabled, otherwise pin in high impedance state.
52 nuvoton,vref-impedance:
93 'nuvoton,sar-voltage', R - button impedance.
105 Button impedance measurement hysteresis.
111 Reference voltage for button impedance measurement.
222 nuvoton,vref-impedance = <2>;
224 // Setup 4 buttons impedance according to Android specification
H A Dnuvoton,nau8325.yaml22 nuvoton,vref-impedance-ohms:
24 The vref impedance to be used in ohms. Middle of voltage enables
25 Tie-Off selection options. Due to the high impedance of the VREF
75 nuvoton,vref-impedance-ohms = <125000>;
H A Dnuvoton,nau8821.yaml31 otherwise pin in high impedance state.
65 nuvoton,vref-impedance:
66 description: VMID Tie-off impedance select.
140 nuvoton,vref-impedance = <2>;
/linux-6.15/Documentation/devicetree/bindings/net/
H A Dti,dp83867.yaml44 ti,min-output-impedance:
47 MAC Interface Impedance control to set the programmable output impedance
50 ti,max-output-impedance:
53 MAC Interface Impedance control to set the programmable output impedance
56 ti,min-output-impedance, ti,max-output-impedance properties
58 cell takes precedence over ti,max-output-impedance, which in
59 turn takes precedence over ti,min-output-impedance.
136 ti,max-output-impedance;
H A Dti,dp83869.yaml34 ti,min-output-impedance:
37 MAC Interface Impedance control to set the programmable output impedance
40 ti,max-output-impedance:
43 MAC Interface Impedance control to set the programmable output impedance
95 ti,max-output-impedance;
/linux-6.15/Documentation/devicetree/bindings/phy/
H A Drockchip,rk3399-emmc-phy.yaml25 drive-impedance-ohm:
28 Specifies the drive impedance in Ohm.
62 drive-impedance-ohm = <50>;
H A Dphy-stm32-usbphyc.yaml150 st,trim-hs-impedance:
152 Controls HS driver impedance tuning for choke compensation
153 - <0> = no impedance offset
154 - <1> = reduce the impedance by 2 ohms
155 - <2> = reduce the impedance by 4 ohms
156 - <3> = reduce the impedance by 6 ohms
262 st,trim-hs-impedance = <1>;
280 st,trim-hs-impedance = <1>;
/linux-6.15/drivers/phy/mediatek/
H A Dphy-mtk-hdmi-mt8195.c307 u8 impedance, impedance_en; in mtk_hdmi_pll_drv_setting() local
328 impedance = 0x36; /* 100ohm */ in mtk_hdmi_pll_drv_setting()
333 impedance = 0x36; /* 100ohm */ in mtk_hdmi_pll_drv_setting()
338 impedance = 0x0; in mtk_hdmi_pll_drv_setting()
351 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D0_EN1, impedance); in mtk_hdmi_pll_drv_setting()
352 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D1_EN1, impedance); in mtk_hdmi_pll_drv_setting()
353 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D2_EN1, impedance); in mtk_hdmi_pll_drv_setting()
354 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_CLK_EN1, impedance); in mtk_hdmi_pll_drv_setting()
/linux-6.15/arch/arm64/boot/dts/qcom/
H A Dmsm8996-sony-xperia-tone.dtsi244 bias-high-impedance;
290 bias-high-impedance;
309 bias-high-impedance;
319 bias-high-impedance;
338 bias-high-impedance;
346 bias-high-impedance;
365 bias-high-impedance;
375 bias-high-impedance;
390 bias-high-impedance;
409 bias-high-impedance;
[all …]
/linux-6.15/arch/arm64/boot/dts/xilinx/
H A Dzynqmp-zc1751-xm015-dc1.dts178 bias-high-impedance;
200 bias-high-impedance;
229 bias-high-impedance;
273 bias-high-impedance;
286 bias-high-impedance;
313 bias-high-impedance;
326 bias-high-impedance;
H A Dzynqmp-zc1751-xm016-dc2.dts176 bias-high-impedance;
199 bias-high-impedance;
249 bias-high-impedance;
272 bias-high-impedance;
294 bias-high-impedance;
323 bias-high-impedance;
H A Dzynqmp-zc1751-xm019-dc5.dts182 bias-high-impedance;
205 bias-high-impedance;
229 bias-high-impedance;
273 bias-high-impedance;
286 bias-high-impedance;
H A Dzynqmp-zcu104-revA.dts251 bias-high-impedance;
305 bias-high-impedance;
350 bias-high-impedance;
372 bias-high-impedance;
396 bias-high-impedance;
418 bias-high-impedance;
H A Dzynqmp-zcu104-revC.dts263 bias-high-impedance;
317 bias-high-impedance;
362 bias-high-impedance;
384 bias-high-impedance;
408 bias-high-impedance;
430 bias-high-impedance;
/linux-6.15/Documentation/hwmon/
H A Dda9055.rst25 - Channel 1: ADC_IN1 - high impedance input (0 - 2.5V)
26 - Channel 2: ADC_IN2 - high impedance input (0 - 2.5V)
27 - Channel 3: ADC_IN3 - high impedance input (0 - 2.5V)
H A Dda9052.rst30 Channel 4 ADC_IN4 - high impedance input (0 - 2.5V)
31 Channel 5 ADC_IN5 - high impedance input (0 - 2.5V)
32 Channel 6 ADC_IN6 - high impedance input (0 - 2.5V)
/linux-6.15/arch/arm/boot/dts/xilinx/
H A Dzynq-zc702.dts207 bias-high-impedance;
230 bias-high-impedance;
327 bias-high-impedance;
340 bias-high-impedance;
361 bias-high-impedance;
384 bias-high-impedance;
H A Dzynq-zc706.dts160 bias-high-impedance;
240 bias-high-impedance;
253 bias-high-impedance;
274 bias-high-impedance;
297 bias-high-impedance;
/linux-6.15/Documentation/devicetree/bindings/iio/impedance-analyzer/
H A Dadi,ad5933.yaml4 $id: http://devicetree.org/schemas/iio/impedance-analyzer/adi,ad5933.yaml#
51 impedance-analyzer@d {
/linux-6.15/Documentation/devicetree/bindings/pinctrl/
H A Dpincfg-node.yaml25 bias-high-impedance:
27 description: high impedance mode ("third-state", "floating")
128 output-impedance-ohms:
129 description: set the output impedance of a pin to at most X ohms
/linux-6.15/Documentation/devicetree/bindings/power/supply/
H A Dstericsson,ab8500-fg.yaml28 line-impedance-micro-ohms:
29 description: The line impedance between the battery and the

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