From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A91DA10AB82D for ; Thu, 26 Mar 2026 22:13:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:References: In-Reply-To:Cc:Subject:Date:To:From:Content-Transfer-Encoding:MIME-Version: Content-Type:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=RVhTS+rSfnyJGM/kliwPbFcxsz7RD9CsUGsL6T806Xw=; b=YnU7GFEqm+XCt18QIymqbNfJ4x O1Ltq7WFj/fiZE34OsLrbbPQOZA1DwHUwmR+P2p6MA/VTNXN5AzZLAnlRtZNXoO0YWHNGn9OIEbzL c8wdmwubGwpVkLbcODYbnWZtBexzmHv9K+KhzJDHq6uAjlL+P1RRExfz2IYArw8QuYQuqg6o8hpP3 qPshkTaQdyn5H7r4GUhImWxRwUkQl7CcMKdC9aAAOQH4HZ5VhGOftdymwVgcQxEYWN+q8o5J8f6pW P8jTTI7xrox3OhTV6UeBJ84idXWabd5c5qXOJWnn9i3DgdN1uzJwtiLAfE1zgS2xizXNQCf6byKf7 WCHpxHPA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1w5sxX-00000006IDg-3Rv5; Thu, 26 Mar 2026 22:13:47 +0000 Received: from fout-a1-smtp.messagingengine.com ([103.168.172.144]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1w5sxO-00000006I2n-17lh; Thu, 26 Mar 2026 22:13:39 +0000 Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfout.phl.internal (Postfix) with ESMTP id 79A31EC021F; Thu, 26 Mar 2026 18:13:37 -0400 (EDT) Received: from phl-imap-07 ([10.202.2.97]) by phl-compute-02.internal (MEProxy); Thu, 26 Mar 2026 18:13:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=jetm.me; h=cc:cc :content-transfer-encoding:content-type:content-type:date:date :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to; s=fm3; t=1774563217; x=1774649617; bh=RVhTS+rSfnyJGM/kliwPbFcxsz7RD9CsUGsL6T806Xw=; b= d3NzGUvZCCCek0IdcQ+Z3AEOlme+tlgy//ftGm7/6F3XSh/ZzhGenuUBtmCzYymB mjoe3XUHXbavnHjaCiB0O8SWMwQ2Dncnect5tkHCvk9f9QIzHOs55SGKTuhJk8mi aYOQnAolthzhnn9rqImoDxcqss85ZvHpfLQHljsHcEvLF8x4QHwZ10/c7XuI40c5 BjjcPHwAIR9tAucpVJh9zkpHhUn6DjKb8098hvLZAGGUIR54nrkU6X59OvaQcR9V vxC3wQQAyy3krTcDQj4K3Xcl+VQTyjPGaR4m/QDTICY78t8o/emH2JnlmPsnDPma 2NY4q9fygGFfsrxH1zT10w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1774563217; x= 1774649617; bh=RVhTS+rSfnyJGM/kliwPbFcxsz7RD9CsUGsL6T806Xw=; b=C WsBgfFoauFDemzQiEV11ZhY871P1HBOwMH7IcRRyEI1kYnxl54ILYIUVQRXggUFE f5tfZRhgw6lYuAyp9Upzi7O4+CPfjYAFH+JLVcyVxgjUlXpRNVRjd3kZPwojRQSZ 2+iok2U0hBqDNj294NiHLTK5ioZTFsFUfxDmxmpBVaHvLcZRB7O+TWP+KfLdXC0S 0edtOz9rgGo2Axb6DomUzpbiRsxJBSPSbhjwg5Owmshb8toCGffZN6n4Op7pyt/1 YKJYMbEPRq/fNcZgpUOEPSgn0Mkl3vrNb5LpDSgpoDZbIvV8wZ974IJCco+jQ7ST kBn20A0mEjukLfOBkoH5w== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgdefvdekheehucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnegopf hokfffucdluddtmdenucfjughrpefotggggffhvfffufevjghfsehtkedttdertdejnecu hfhrohhmpeflrghvihgvrhcuvfhirgcuoehflhhoshhssehjvghtmhdrmhgvqeenucggtf frrghtthgvrhhnpeektdffveejhfeffeevgfefhffhuedvvdfgfffhieetleefvefgfeek tedvffffgfenucffohhmrghinhepkhgvrhhnvghlrdhorhhgnecuvehluhhsthgvrhfuih iivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepfhhlohhsshesjhgvthhmrdhmvgdp nhgspghrtghpthhtohepuddtpdhmohguvgepshhmthhpohhuthdprhgtphhtthhopegrnh hgvghlohhgihhorggttghhihhnohdruggvlhhrvghgnhhosegtohhllhgrsghorhgrrdgt ohhmpdhrtghpthhtoheplhhuihiirdguvghnthiisehgmhgrihhlrdgtohhmpdhrtghpth htohepmhgrthhthhhirghsrdgsghhgsehgmhgrihhlrdgtohhmpdhrtghpthhtohepgigv lhhnrghgrgesghhmrghilhdrtghomhdprhgtphhtthhopehmrghrtggvlheshhholhhtmh grnhhnrdhorhhgpdhrtghpthhtohepshgvrghnrdifrghngheskhgvrhhnvghlrdhorhhg pdhrtghpthhtoheplhhinhhugidqrghrmhdqkhgvrhhnvghlsehlihhsthhsrdhinhhfrh gruggvrggurdhorhhgpdhrtghpthhtoheplhhinhhugidqmhgvughirghtvghksehlihhs thhsrdhinhhfrhgruggvrggurdhorhhgpdhrtghpthhtoheplhhinhhugidqsghluhgvth hoohhthhesvhhgvghrrdhkvghrnhgvlhdrohhrgh X-ME-Proxy: Feedback-ID: i9dde48b3:Fastmail Received: by mailuser.phl.internal (Postfix, from userid 501) id 525291EA006B; Thu, 26 Mar 2026 18:13:37 -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: Sean Wang Date: Thu, 26 Mar 2026 15:26:29 -0600 Subject: Re: [PATCH v2 1/8] Bluetooth: btmtk: Add MT6639 (MT7927) Bluetooth support Cc: Marcel Holtmann , Luiz Augusto von Dentz , 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 In-Reply-To: CAGp9Lzrme_J2UyzzG+7AWGU4MKx4yehgUy4biy4ZbtP9OkbfnQ@mail.gmail.com References: 20260325-mt7927-bt-support-v2-0-b892a3252880@jetm.me 20260325-mt7927-bt-support-v2-1-b892a3252880@jetm.me CAGp9Lzrme_J2UyzzG+7AWGU4MKx4yehgUy4biy4ZbtP9OkbfnQ@mail.gmail.com Message-Id: <20260326221337.525291EA006B@mailuser.phl.internal> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260326_151338_369638_986C5D12 X-CRM114-Status: GOOD ( 13.36 ) 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 Sean, Thank you for the review. Both items are addressed in v3. On Wed, Mar 26, 2026 Sean Wang wrote: > Using raw CHIPID=0x0000 to unconditionally force 0x6639 seems fragile. > If another device later hits the same missing-ID condition, it would > also be misdetected as MT6639. Normally this kind of quirk could be > carried in .driver_data, but since btusb.c is shared, I'm not sure > that is the right fit here either. This should probably be handled > through a more device-specific fallback instead of mapping all zero > CHIPID cases to 0x6639. Agreed. In v3, the zero-CHIPID fallback is scoped to a static VID/PID table of known MT6639 USB devices. Only those specific devices get forced to 0x6639 - any other device reading zero will fall through to the default "unsupported hardware" path. This follows the WiFi-side pattern where is_mt7927_hw is derived from the PCI device table, not the chip register. > I would prefer using the mediatek/mt7927/ folder naming here. mt7927 > is more widely recognized, and using it would avoid unnecessary > confusion. Done. The firmware path is now mediatek/mt7927/ in both the FIRMWARE_MT7927 define and btmtk_fw_get_filename(). This matches the WiFi firmware convention (mediatek/mt7927/WIFI_RAM_CODE_...). The linux-firmware MR !946 has also been updated to use the mt7927 directory. v3 sent with these changes: https://lore.kernel.org/linux-bluetooth/20260326-mt7927-bt-support-v3-0-fa7ebd424323@jetm.me/T/#t Best, Javier