diff options
Diffstat (limited to 'sound/pci/hda/Kconfig')
| -rw-r--r-- | sound/pci/hda/Kconfig | 19 |
1 files changed, 10 insertions, 9 deletions
diff --git a/sound/pci/hda/Kconfig b/sound/pci/hda/Kconfig index febe1c2b7d9a..9f6c99c1d87b 100644 --- a/sound/pci/hda/Kconfig +++ b/sound/pci/hda/Kconfig @@ -285,15 +285,16 @@ config SND_HDA_INTEL_HDMI_SILENT_STREAM bool "Enable Silent Stream always for HDMI" depends on SND_HDA_INTEL help - Intel hardware has a feature called 'silent stream', that - keeps external HDMI receiver's analog circuitry powered on - avoiding 2-3 sec silence during playback start. This mechanism - relies on setting channel_id as 0xf, sending info packet and - preventing codec D3 entry (increasing platform static power - consumption when HDMI receiver is plugged-in). 2-3 sec silence - at the playback start is expected whenever there is format change. - (default is 2 channel format). - Say Y to enable Silent Stream feature. + Say Y to enable HD-Audio Keep Alive (KAE) aka Silent Stream + for HDMI on hardware that supports the feature. + + When enabled, the HDMI/DisplayPort codec will continue to provide + a continuous clock and a valid but silent data stream to + any connected external receiver. This allows to avoid gaps + at start of playback. Many receivers require multiple seconds + to start playing audio after the clock has been stopped. + This feature can impact power consumption as resources + are kept reserved both at transmitter and receiver. endif |