Re: [PATCH] ALSA: usb-audio: Add DSD support for iBasso DC04U

From: Takashi Iwai

Date: Mon Feb 09 2026 - 04:39:16 EST


On Mon, 09 Feb 2026 03:06:47 +0100,
V-Conet wrote:
>
> The vendor ID 0x0661 is assigned to Hamamatsu Photonics K.K., but is used by iBasso for the iBasso DC04U USB DAC (0x0661:0x0883), which supports native DSD playback.
>
> This patch adds QUIRK_FLAG_DSD_RAW for the iBasso DC04U, enabling native DSD playback (DSD_U32_BE). The change has been verified on Arch Linux using mpd and pw-cat.
>
> Signed-off-by: V-Conet <v-conet@xxxxxxxxxxx>

Thanks for the patch. The code change looks OK, but could you give
your Signed-off-by with a real name (or a known identity), as it's a
legal requirement for upstreaming?

Also, please fold the patch description texts properly, too.


thanks,

Takashi