summaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/sound/max98357a.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/sound/max98357a.txt')
-rw-r--r--Documentation/devicetree/bindings/sound/max98357a.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/sound/max98357a.txt b/Documentation/devicetree/bindings/sound/max98357a.txt
index 28645a2ff885..4bce14ce806f 100644
--- a/Documentation/devicetree/bindings/sound/max98357a.txt
+++ b/Documentation/devicetree/bindings/sound/max98357a.txt
@@ -9,6 +9,10 @@ Optional properties:
- sdmode-gpios : GPIO specifier for the chip's SD_MODE pin.
If this option is not specified then driver does not manage
the pin state (e.g. chip is always on).
+- sdmode-delay : specify delay time for SD_MODE pin.
+ If this option is specified, which means it's required i2s clocks
+ ready before SD_MODE is unmuted in order to avoid the speaker pop noise.
+ It's observed that 5ms is sufficient.
Example: