ASoC: da7219: Add bindings documentation for DA7219 audio codec

Signed-off-by: Adam Thomson <Adam.Thomson.Opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/da7219.txt b/Documentation/devicetree/bindings/sound/da7219.txt
new file mode 100644 (file)
index 0000000..1b70309
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/da7219.txt
@@ -0,0 +1,106 @@
+Dialog Semiconductor DA7219 Audio Codec bindings
+
+DA7219 is an audio codec with advanced accessory detect features.
+
+======
+
+Required properties:
+- compatible : Should be "dlg,da7219"
+- reg: Specifies the I2C slave address
+
+- interrupt-parent : Specifies the phandle of the interrupt controller to which
+  the IRQs from DA7219 are delivered to.
+- interrupts : IRQ line info for DA7219.
+  (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
+   further information relating to interrupt properties)
+
+- VDD-supply: VDD power supply for the device
+- VDDMIC-supply: VDDMIC power supply for the device
+- VDDIO-supply: VDDIO power supply for the device
+  (See Documentation/devicetree/bindings/regulator/regulator.txt for further
+   information relating to regulators)
+
+Optional properties:
+- interrupt-names : Name associated with interrupt line. Should be "wakeup" if
+  interrupt is to be used to wake system, otherwise "irq" should be used.
+- wakeup-source: Flag to indicate this device can wake system (suspend/resume).
+
+- clocks : phandle and clock specifier for codec MCLK.
+- clock-names : Clock name string for 'clocks' attribute, should be "mclk".
+
+- dlg,ldo-lvl : Required internal LDO voltage (mV) level for digital engine
+       [<1050>, <1100>, <1200>, <1400>]
+- dlg,micbias-lvl : Voltage (mV) for Mic Bias
+       [<1800>, <2000>, <2200>, <2400>, <2600>]
+- dlg,mic-amp-in-sel : Mic input source type
+       ["diff", "se_p", "se_n"]
+
+======
+
+Child node - 'da7219_aad':
+
+Optional properties:
+- dlg,micbias-pulse-lvl : Mic bias higher voltage pulse level (mV).
+       [<2800>, <2900>]
+- dlg,micbias-pulse-time : Mic bias higher voltage pulse duration (ms)
+- dlg,btn-cfg : Periodic button press measurements for 4-pole jack (ms)
+       [<2>, <5>, <10>, <50>, <100>, <200>, <500>]
+- dlg,mic-det-thr : Impedance threshold for mic detection measurement (Ohms)
+       [<200>, <500>, <750>, <1000>]
+- dlg,jack-ins-deb : Debounce time for jack insertion (ms)
+       [<5>, <10>, <20>, <50>, <100>, <200>, <500>, <1000>]
+- dlg,jack-det-rate: Jack type detection latency (3/4 pole)
+       ["32ms_64ms", "64ms_128ms", "128ms_256ms", "256ms_512ms"]
+- dlg,jack-rem-deb : Debounce time for jack removal (ms)
+       [<1>, <5>, <10>, <20>]
+- dlg,a-d-btn-thr : Impedance threshold between buttons A and D
+       [0x0 - 0xFF]
+- dlg,d-b-btn-thr : Impedance threshold between buttons D and B
+       [0x0 - 0xFF]
+- dlg,b-c-btn-thr : Impedance threshold between buttons B and C
+       [0x0 - 0xFF]
+- dlg,c-mic-btn-thr : Impedance threshold between button C and Mic
+       [0x0 - 0xFF]
+- dlg,btn-avg : Number of 8-bit readings for averaged button measurement
+       [<1>, <2>, <4>, <8>]
+- dlg,adc-1bit-rpt : Repeat count for 1-bit button measurement
+       [<1>, <2>, <4>, <8>]
+
+======
+
+Example:
+
+       codec: da7219@1a {
+               compatible = "dlg,da7219";
+               reg = <0x1a>;
+
+               interrupt-parent = <&gpio6>;
+               interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
+
+               VDD-supply = <&reg_audio>;
+               VDDMIC-supply = <&reg_audio>;
+               VDDIO-supply = <&reg_audio>;
+
+               clocks = <&clks 201>;
+               clock-names = "mclk";
+
+               dlg,ldo-lvl = <1200>;
+               dlg,micbias-lvl = <2600>;
+               dlg,mic-amp-in-sel = "diff";
+
+               da7219_aad {
+                       dlg,btn-cfg = <50>;
+                       dlg,mic-det-thr = <500>;
+                       dlg,jack-ins-deb = <20>;
+                       dlg,jack-det-rate = "32ms_64ms";
+                       dlg,jack-rem-deb = <1>;
+
+                       dlg,a-d-btn-thr = <0xa>;
+                       dlg,d-b-btn-thr = <0x16>;
+                       dlg,b-c-btn-thr = <0x21>;
+                       dlg,c-mic-btn-thr = <0x3E>;
+
+                       dlg,btn-avg = <4>;
+                       dlg,adc-1bit-rpt = <1>;
+               };
+       };