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    SubjectRe: [PATCH 5/6] mfd: arizona: Update DT binding documentation for mic detection
    On Wed, 16 Sep 2015, Charles Keepax wrote:

    > Add additional bindings to allow configuration of the system specific
    > microphone detection settings.
    >
    > Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
    > ---
    > Documentation/devicetree/bindings/mfd/arizona.txt | 21 +++++++++++++++++++++
    > include/dt-bindings/mfd/arizona.h | 5 +++++
    > 2 files changed, 26 insertions(+), 0 deletions(-)
    >
    > diff --git a/Documentation/devicetree/bindings/mfd/arizona.txt b/Documentation/devicetree/bindings/mfd/arizona.txt
    > index a8fee60..b98a11b 100644
    > --- a/Documentation/devicetree/bindings/mfd/arizona.txt
    > +++ b/Documentation/devicetree/bindings/mfd/arizona.txt
    > @@ -73,6 +73,27 @@ Optional properties:
    > If this node is not mentioned or if the value is unknown, then
    > headphone detection mode is set to HPDETL.
    >
    > + - wlf,micd-software-compare : Use a software comparison to determine mic
    > + presence
    > + - wlf,micd-detect-debounce : Additional software microphone detection
    > + debounce specified in milliseconds.
    > + - wlf,micd-pol-gpio : GPIO specifier for the GPIO controlling the headset
    > + polarity if one exists.
    > + - wlf,micd-bias-start-time : Time allowed for MICBIAS to startup prior to
    > + performing microphone detection, specified as per the ARIZONA_MICD_TIME_XXX
    > + defines.
    > + - wlf,micd-rate : Delay between successive microphone detection measurements,
    > + specified as per the ARIZONA_MICD_TIME_XXX defines.
    > + - wlf,micd-dbtime : Microphone detection hardware debounces specified as the
    > + number of measurements to take, valid values being 2 and 4.
    > + - wlf,micd-timeout : Timeout for microphone detection, specified in
    > + milliseconds.
    > + - wlf,micd-force-micbias : Force MICBIAS continuously on during microphone
    > + detection.
    > +
    > + - wlf,gpsw : Settings for the general purpose switch, set as one of the
    > + ARIZONA_GPSW_XXX defines.

    I either need an Ack from the DT folks, or at least someone who knows
    about this stuff. Mark perhaps.

    > - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
    > they are being externally supplied. As covered in
    > Documentation/devicetree/bindings/regulator/regulator.txt
    > diff --git a/include/dt-bindings/mfd/arizona.h b/include/dt-bindings/mfd/arizona.h
    > index c40f665..dedf46f 100644
    > --- a/include/dt-bindings/mfd/arizona.h
    > +++ b/include/dt-bindings/mfd/arizona.h
    > @@ -110,4 +110,9 @@
    > #define ARIZONA_ACCDET_MODE_HPM 4
    > #define ARIZONA_ACCDET_MODE_ADC 7
    >
    > +#define ARIZONA_GPSW_OPEN 0
    > +#define ARIZONA_GPSW_CLOSED 1
    > +#define ARIZONA_GPSW_CLAMP_ENABLED 2
    > +#define ARIZONA_GPSW_CLAMP_DISABLED 3
    > +
    > #endif

    --
    Lee Jones
    Linaro STMicroelectronics Landing Team Lead
    Linaro.org │ Open source software for ARM SoCs
    Follow Linaro: Facebook | Twitter | Blog


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