[PATCH] ALSA: usb-audio: Add iface reset quirk for TASCAM US-16x08

[PATCH] ALSA: usb-audio: Add iface reset quirk for TASCAM US-16x08

[Sandro Pischinger]

When suspending and resuming the playback stream, audible
glitching/chirping appears on the audio interface's output for several
seconds.

On playback stream resumption, I observed an increase in feedback rate
up to 48,038Hz. This stabilized back to 48,000Hz after ~20s.

This is mitigated by applying an interface reset on stream resumption,
as introduced by John Keeping on the TASCAM Model 12.

Link: https://lore.kernel.org/20221129130100.1257904-1-john@metanate.com

Signed-off-by: Sandro Pischinger <kernel@sandropischinger.de>
---
 sound/usb/quirks.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sound/usb/quirks.c b/sound/usb/quirks.c
index 7cd806e9611b..8393a0af7b40 100644
--- a/sound/usb/quirks.c
+++ b/sound/usb/quirks.c
@@ -2578,6 +2578,9 @@ static const struct usb_audio_quirk_flags_table quirk_flags_table[] = {
 	DEVICE_FLG(0x0644, 0x8044, /* Esoteric D-05X */
 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
 		   QUIRK_FLAG_IFACE_DELAY | QUIRK_FLAG_FORCE_IFACE_RESET),
+	DEVICE_FLG(0x0644, 0x8047, /* TASCAM US-16x08 */
+		   QUIRK_FLAG_CTL_MSG_DELAY | QUIRK_FLAG_IFACE_DELAY |
+		   QUIRK_FLAG_FORCE_IFACE_RESET),
 	DEVICE_FLG(0x0644, 0x804a, /* TEAC UD-301 */
 		   QUIRK_FLAG_ITF_USB_DSD_DAC | QUIRK_FLAG_CTL_MSG_DELAY |
 		   QUIRK_FLAG_IFACE_DELAY),

base-commit: b40a5f6d0e2a2b27b29d59d55fc92c5b9443e77c
-- 
2.56.0

Re: [PATCH] ALSA: usb-audio: Add iface reset quirk for TASCAM US-16x08

[Takashi Iwai]

On Mon, 12 Oct 2026 14:42:55 +0200,
Sandro Pischinger wrote:
> 
> When suspending and resuming the playback stream, audible
> glitching/chirping appears on the audio interface's output for several
> seconds.
> 
> On playback stream resumption, I observed an increase in feedback rate
> up to 48,038Hz. This stabilized back to 48,000Hz after ~20s.
> 
> This is mitigated by applying an interface reset on stream resumption,
> as introduced by John Keeping on the TASCAM Model 12.
> 
> Link: https://lore.kernel.org/20221129130100.1257904-1-john@metanate.com
> 
> Signed-off-by: Sandro Pischinger <kernel@sandropischinger.de>

Applied to for-next branch now.  Thanks.


Takashi