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Tue, 31 Mar 2026 13:10:43 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Javier Tia To: Luiz Augusto von Dentz Date: Tue, 31 Mar 2026 11:10:02 -0600 Subject: Re: [PATCH v4 0/8] Bluetooth: Add MediaTek MT7927 (MT6639) support Cc: Marcel Holtmann , Matthias Brugger , AngeloGioacchino Del Regno , linux-bluetooth@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, Ryan Gilbert , Jose Tiburcio Ribeiro Netto , Llewellyn Curran , Chapuis Dario , Evgeny Kapusta <3193631@gmail.com>, Nitin Gurram , Thibaut FRANCOIS , Ivan Lubnin In-Reply-To: CABBYNZ+MFJU=LLEaizYEt1b-7VzosErkav7dyneZExr_rLUnRA@mail.gmail.com References: 20260330-mt7927-bt-support-v4-0-cecc025e7062@jetm.me CABBYNZ+MFJU=LLEaizYEt1b-7VzosErkav7dyneZExr_rLUnRA@mail.gmail.com Message-Id: <20260331171043.F1C481EA006B@mailuser.phl.internal> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260331_181050_037724_FEA4D83E X-CRM114-Status: UNSURE ( 9.51 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi Luiz, On Tue, 31 Mar 2026 Luiz Augusto von Dentz wrote: > Ok, but on 8/8 it seem to suggest the problem still exists which > trigger the following review: > > https://sashiko.dev/#/patchset/20260330-mt7927-bt-support-v4-0-cecc025e7062%40jetm.me > > Perhaps we should ajust the commit description if the 19 seconds > doesn't really occurs when 2/8 is applied. Good catch. The ~19 second delay is indeed fixed by patch 2/8, so the note in 8/8 was misleading as written. I've updated the commit message in 8/8 to clarify: Note: boards with this USB ID expose only one ISO alternate setting (alt 0). Without the fix in patch 2/8 ("btmtk: fix ISO interface setup for single alt setting"), this caused ~19 second initialization delays. With the fix applied, initialization completes in ~2.6 seconds. This is addressed in v5: https://lore.kernel.org/linux-bluetooth/20260331-mt7927-bt-support-v5-0-6f31b4342daa@jetm.me/ Best, Javier