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846d9ce535
Update the binding documentation to mention the defines added for the possible values of wlf,gpsw. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
77 lines
2.8 KiB
Plaintext
77 lines
2.8 KiB
Plaintext
Cirrus Logic Arizona class audio SoCs
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These devices are audio SoCs with extensive digital capabilities and a range
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of analogue I/O.
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This document lists Extcon specific bindings, see the primary binding document:
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../mfd/arizona.txt
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Optional properties:
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- wlf,hpdet-channel : Headphone detection channel.
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ARIZONA_ACCDET_MODE_HPL or 1 - Headphone detect mode is set to HPDETL
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ARIZONA_ACCDET_MODE_HPR or 2 - Headphone detect mode is set to HPDETR
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If this node is not mentioned or if the value is unknown, then
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headphone detection mode is set to HPDETL.
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- wlf,use-jd2 : Use the additional JD input along with JD1 for dual pin jack
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detection.
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- wlf,use-jd2-nopull : Internal pull on JD2 is disabled when used for
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jack detection.
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- wlf,jd-invert : Invert the polarity of the jack detection switch
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- wlf,micd-software-compare : Use a software comparison to determine mic
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presence
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- wlf,micd-detect-debounce : Additional software microphone detection
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debounce specified in milliseconds.
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- wlf,micd-pol-gpio : GPIO specifier for the GPIO controlling the headset
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polarity if one exists.
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- wlf,micd-bias-start-time : Time allowed for MICBIAS to startup prior to
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performing microphone detection, specified as per the ARIZONA_MICD_TIME_XXX
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defines.
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- wlf,micd-rate : Delay between successive microphone detection measurements,
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specified as per the ARIZONA_MICD_TIME_XXX defines.
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- wlf,micd-dbtime : Microphone detection hardware debounces specified as the
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number of measurements to take, valid values being 2 and 4.
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- wlf,micd-timeout-ms : Timeout for microphone detection, specified in
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milliseconds.
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- wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
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detection.
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- wlf,micd-configs : Headset polarity configurations (generally used for
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detection of CTIA / OMTP headsets), the field can be of variable length
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but should always be a multiple of 3 cells long, each three cell group
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represents one polarity configuration.
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The first cell defines the accessory detection pin, zero will use MICDET1
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and all other values will use MICDET2.
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The second cell represents the MICBIAS to be used.
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The third cell represents the value of the micd-pol-gpio pin.
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- wlf,gpsw : Settings for the general purpose switch, set as one of the
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ARIZONA_GPSW_XXX defines.
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Example:
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codec: wm8280@0 {
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compatible = "wlf,wm8280";
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reg = <0>;
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...
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wlf,use-jd2;
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wlf,use-jd2-nopull;
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wlf,jd-invert;
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wlf,micd-software-compare;
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wlf,micd-detect-debounce = <0>;
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wlf,micd-pol-gpio = <&codec 2 0>;
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wlf,micd-rate = <ARIZONA_MICD_TIME_8MS>;
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wlf,micd-dbtime = <4>;
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wlf,micd-timeout-ms = <100>;
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wlf,micd-force-micbias;
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wlf,micd-configs = <
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0 1 0 /* MICDET1 MICBIAS1 GPIO=low */
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1 2 1 /* MICDET2 MICBIAS2 GPIO=high */
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>;
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wlf,gpsw = <0>;
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};
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