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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
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