summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/sound/ics43432.txt
diff options
context:
space:
mode:
authorRicard Wanderlof <ricard.wanderlof@axis.com>2015-08-27 12:35:20 +0300
committerMark Brown <broonie@kernel.org>2015-08-27 19:09:27 +0300
commit3b7ce99748f0d006f9d1aa85709872e7b46787f7 (patch)
treeb2e1a554f073b831f94ebdd81cc264e920907482 /Documentation/devicetree/bindings/sound/ics43432.txt
parentbc0195aad0daa2ad5b0d76cce22b167bc3435590 (diff)
downloadlinux-3b7ce99748f0d006f9d1aa85709872e7b46787f7.tar.xz
ASoC: ics43432: Add codec driver for InvenSense ICS-43432
Add support for the InvenSense ICS-43432 I2S MEMS microphone. This is a non-software-configurable MEMS microphone with I2S output. Tested on a setup with a single ICS-43432 (the device itself supports stereo operation using a hardware pin controlling left vs. right channel output). Signed-off-by: Ricard Wanderlof <ricardw@axis.com> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/sound/ics43432.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/ics43432.txt17
1 files changed, 17 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/ics43432.txt b/Documentation/devicetree/bindings/sound/ics43432.txt
new file mode 100644
index 000000000000..b02e3a6c0fef
--- /dev/null
+++ b/Documentation/devicetree/bindings/sound/ics43432.txt
@@ -0,0 +1,17 @@
+Invensense ICS-43432 MEMS microphone with I2S output.
+
+There are no software configuration options for this device, indeed, the only
+host connection is the I2S interface. Apart from requirements on clock
+frequency (460 kHz to 3.379 MHz according to the data sheet) there must be
+64 clock cycles in each stereo output frame; 24 of the 32 available bits
+contain audio data. A hardware pin determines if the device outputs data
+on the left or right channel of the I2S frame.
+
+Required properties:
+ - compatible : Must be "invensense,ics43432"
+
+Example:
+
+ ics43432: ics43432 {
+ compatible = "invensense,ics43432";
+ };