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/openbmc/linux/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.
/openbmc/linux/drivers/phy/mediatek/
H A Dphy-mtk-hdmi-mt8195.c305 u8 impedance, impedance_en; in mtk_hdmi_pll_drv_setting() local
326 impedance = 0x36; /* 100ohm */ in mtk_hdmi_pll_drv_setting()
331 impedance = 0x36; /* 100ohm */ in mtk_hdmi_pll_drv_setting()
336 impedance = 0x0; in mtk_hdmi_pll_drv_setting()
349 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D0_EN1, impedance); in mtk_hdmi_pll_drv_setting()
350 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D1_EN1, impedance); in mtk_hdmi_pll_drv_setting()
351 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_D2_EN1, impedance); in mtk_hdmi_pll_drv_setting()
352 mtk_phy_update_field(regs + HDMI_1_CFG_2, RG_HDMITX21_DRV_IMP_CLK_EN1, impedance); in mtk_hdmi_pll_drv_setting()
/openbmc/u-boot/drivers/ram/aspeed/
H A DKconfig105 prompt "DDR4 DRAM output driver impedance"
109 bool "DDR4 DRAM output driver impedance 34 ohm"
112 select DDR4 DRAM output driver impedance 34 ohm
115 bool "DDR4 DRAM output driver impedance 48 ohm"
118 select DDR4 DRAM output driver impedance 48 ohm
/openbmc/linux/Documentation/devicetree/bindings/phy/
H A Drockchip-emmc-phy.txt16 - drive-impedance-ohm: Specifies the drive impedance in Ohm.
40 drive-impedance-ohm = <50>;
/openbmc/linux/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 …]
/openbmc/linux/arch/arm64/boot/dts/xilinx/
H A Dzynqmp-zc1751-xm015-dc1.dts174 bias-high-impedance;
196 bias-high-impedance;
225 bias-high-impedance;
269 bias-high-impedance;
282 bias-high-impedance;
309 bias-high-impedance;
322 bias-high-impedance;
H A Dzynqmp-zc1751-xm016-dc2.dts172 bias-high-impedance;
195 bias-high-impedance;
245 bias-high-impedance;
268 bias-high-impedance;
290 bias-high-impedance;
319 bias-high-impedance;
H A Dzynqmp-zc1751-xm019-dc5.dts178 bias-high-impedance;
201 bias-high-impedance;
225 bias-high-impedance;
269 bias-high-impedance;
282 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;
H A Dzynqmp-sck-kv-g-revB.dtso165 bias-high-impedance;
215 bias-high-impedance;
258 bias-high-impedance;
287 bias-high-impedance;
H A Dzynqmp-sck-kv-g-revA.dtso182 bias-high-impedance;
232 bias-high-impedance;
275 bias-high-impedance;
304 bias-high-impedance;
H A Dzynqmp-zcu100-revC.dts311 bias-high-impedance;
396 bias-high-impedance;
419 bias-high-impedance;
441 bias-high-impedance;
468 bias-high-impedance;
/openbmc/u-boot/arch/arm/dts/
H A Dzynq-zc702.dts214 bias-high-impedance;
237 bias-high-impedance;
334 bias-high-impedance;
347 bias-high-impedance;
368 bias-high-impedance;
391 bias-high-impedance;
H A Dzynq-zc706.dts159 bias-high-impedance;
239 bias-high-impedance;
252 bias-high-impedance;
273 bias-high-impedance;
296 bias-high-impedance;
H A Ddra72-evm-revc.dts81 ti,min-output-impedance;
92 ti,min-output-impedance;
/openbmc/linux/arch/arm/boot/dts/xilinx/
H A Dzynq-zc702.dts218 bias-high-impedance;
241 bias-high-impedance;
338 bias-high-impedance;
351 bias-high-impedance;
372 bias-high-impedance;
395 bias-high-impedance;
H A Dzynq-zc706.dts158 bias-high-impedance;
238 bias-high-impedance;
251 bias-high-impedance;
272 bias-high-impedance;
295 bias-high-impedance;
H A Dzynq-ebaz4205.dts100 bias-high-impedance;
119 bias-high-impedance;
/openbmc/linux/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)
/openbmc/linux/arch/arm64/boot/dts/ti/
H A Dk3-j721e-evm-gesi-exp-board.dtso81 ti,min-output-impedance;
87 ti,min-output-impedance;
93 ti,min-output-impedance;
99 ti,min-output-impedance;
/openbmc/linux/Documentation/devicetree/bindings/leds/
H A Dleds-lm3532.txt36 - ti,als1-imp-sel - ALS1 impedance resistor selection in Ohms
37 - ti,als2-imp-sel - ALS2 impedance resistor selection in Ohms
38 Range for impedance select: 37000 Ohms - 1190 Ohms
/openbmc/linux/drivers/staging/iio/
H A DMakefile10 obj-y += impedance-analyzer/

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