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Sat, 10 Oct 2026 08:01:12 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id lA8sE8jwyWreTAAAD6G6ig (envelope-from ); Sat, 10 Oct 2026 08:01:12 +0000 Date: Sat, 10 Oct 2026 10:01:12 +0200 Message-ID: <87o6d2j86v.wl-tiwai@suse.de> From: Takashi Iwai To: D_de_Vliegh Cc: tiwai@suse.com, perex@perex.cz, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ALSA: usb-audio: Enable native DSD for MOONDROP DAWN PRO2 In-Reply-To: <20261009215322.8223-1-taoyi.sh.cn@gmail.com> References: <20261009215322.8223-1-taoyi.sh.cn@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/30.2 Mule/6.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Result: default: False [-1.80 / 50.00]; BAYES_HAM(-3.00)[99.99%]; SUSPICIOUS_RECIPS(1.50)[]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_TO(0.00)[gmail.com]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[imap1.dmz-prg2.suse.org:helo] X-Spam-Score: -1.80 X-Spam-Level: X-Spam-Flag: NO On Fri, 09 Oct 2026 23:53:22 +0200, D_de_Vliegh wrote: > > The MOONDROP DAWN PRO2 (USB ID 35d8:011d) exposes a UAC2 RAW_DATA > playback altsetting, but ALSA reports it as SPECIAL without the > DSD_RAW quirk, preventing native DSD playback. > > Add the device to the raw DSD quirk table. With the quirk enabled, > ALSA exposes DSD_U32_BE and MPD 0.24.4 outputs stereo DSD256 through > USB altsetting 4 at 352800 frames/s, instead of converting to PCM. > > Tested using snd-usb-audio quirk_flags=35d8:011d:DSD_RAW on > Linux 7.2.6+deb13-amd64 (Debian 13). > > Assisted-by: LLM > Signed-off-by: D_de_Vliegh The Signed-off-by tag is a legal requirement, hence we prefer having a full real name there. Could you resubmit with it (also align From tag with it, too)? thanks, Takashi