ASoC: dt-bindings: rt5682: add button delay device property

The btndet-delay device property could control the HW debounce time.
It is easy to adjust the sensitivity of push button.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Link: https://lore.kernel.org/r/20191030085556.14351-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/Documentation/devicetree/bindings/sound/rt5682.txt b/Documentation/devicetree/bindings/sound/rt5682.txt
index 312e9a129530cf3a2f6a45d9224968a67786a619..30e927a283690a8e33a4e0d3f3c8bdeda567d876 100644 (file)
--- a/Documentation/devicetree/bindings/sound/rt5682.txt
+++ b/Documentation/devicetree/bindings/sound/rt5682.txt
@@ -27,6 +27,11 @@ Optional properties:
 
 - realtek,ldo1-en-gpios : The GPIO that controls the CODEC's LDO1_EN pin.
 
+- realtek,btndet-delay
+  The debounce delay for push button.
+  The delay time is realtek,btndet-delay value multiple of 8.192 ms.
+  If absent, the default is 16.
+
 Pins on the device (for linking into audio routes) for RT5682:
 
   * DMIC L1
@@ -47,4 +52,5 @@ rt5682 {
        realtek,dmic1-data-pin = <1>;
        realtek,dmic1-clk-pin = <1>;
        realtek,jd-src = <1>;
+       realtek,btndet-delay = <16>;
 };