[PATCH v2 4/5] mfd: arizona: Update DT binding documentation for mic detection

Charles Keepax
2015-10-02T16:51:57Z

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.
+
- 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
--
1.7.2.5