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

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Message-ID: <87bjhy2r6n.wl-tiwai@suse.de>
Date: Mon, 09 Feb 2026 10:37:36 +0100
From: Takashi Iwai <tiwai@...e.de>
To: V-Conet <v-conet@...look.com>
Cc: Takashi Iwai <tiwai@...e.com>,
	Jaroslav Kysela <perex@...ex.cz>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: usb-audio: Add DSD support for iBasso DC04U

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@...look.com>

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