From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from fout-b6-smtp.messagingengine.com (fout-b6-smtp.messagingengine.com [202.12.124.149]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 437EF3563FB; Wed, 25 Mar 2026 22:11:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.12.124.149 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774476682; cv=none; b=bRpCkrutez32MPBNckw/ty7pTUCrwB3ntaE3QKFP+eBGfklDJJZEWPTULn888ZONorCeN2t+tFqFDST1XybTlQq4j7sj4A2gQ0HRsUUD1WkuxjVi7Hg/d52urfoz1Jg/frqpMMe0hLpg+kmpTESqGtzqaRfCU7ZSSyyP6oE1HkU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774476682; c=relaxed/simple; bh=2iqjJzkxfCHr/WEpzj6LaYh+JuyD2C2/r14c7V0yo38=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc: In-Reply-To:References; b=OmlXD/hmGzf4iUIdK2CrVKFXNlmuF+yU9poOHfMwAQptf8aKvj+PNkGDUYviOSPCm/qd/HMxoePkOAsSQhSvvvHjieDLhaTEryJXOPLYWW89dVv+0Q+gxLWTNUfydpUxrVNyQN3MP3ojVptW6Q4RICp3T/O2i4BN8hVP6+ox5qM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=jetm.me; spf=pass smtp.mailfrom=jetm.me; dkim=pass (2048-bit key) header.d=jetm.me header.i=@jetm.me header.b=FfJYpItg; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b=S1KQeY+n; arc=none smtp.client-ip=202.12.124.149 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=jetm.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=jetm.me Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=jetm.me header.i=@jetm.me header.b="FfJYpItg"; dkim=pass (2048-bit key) header.d=messagingengine.com header.i=@messagingengine.com header.b="S1KQeY+n" Received: from phl-compute-02.internal (phl-compute-02.internal [10.202.2.42]) by mailfout.stl.internal (Postfix) with ESMTP id 5B6C11D00168; Wed, 25 Mar 2026 18:11:17 -0400 (EDT) Received: from phl-imap-07 ([10.202.2.97]) by phl-compute-02.internal (MEProxy); Wed, 25 Mar 2026 18:11:17 -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=1774476677; x=1774563077; bh=n7RyoRF58WkVZqJnuoOO9YEr75upIQgc4Q8y20FVoJo=; b= FfJYpItgt4bCSVo9wuIULduF6xbyHzRPAuQk6FLtlF8MSeC5TFEP6FGfVfz9XYdw IVa9hJ63X8HrJoAf+pyLbcqjtVgj0LEuCau/jqhyrZSpzdLoCeru+uDNo5OJxWa0 FBfl0mlGXkWEvTG5EM9gECXxn0TjCC5yeGu5dsnZYHoQkcAZG3aqm21eTaOVMzXi dm+oTX9RNQ1enUKa8dZJnc/iwuAfGq31x1MmYXQuWDOv7uktfDn7msefvLMW7CNb iDk/TWvicoL3SMlwSGO9dzk7phK+xCuH9IulAQogQNPdR2KJBnE5D9nw7jjGOk/r g7H59kpWMzniBgPQdOOXFg== 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=1774476677; x= 1774563077; bh=n7RyoRF58WkVZqJnuoOO9YEr75upIQgc4Q8y20FVoJo=; b=S 1KQeY+n+GsBkf/iXvOVqlYen1Hlcg4zhmh+1ouwhKEGuJe4sl8V9qGR+3XymeQpC 1CvLCN4g6lxB3tK0XUaeVQYzWGpXe+QgS5hUjjqN7c4Qcl+lBvDETAoxZqozgVOH uR2dLo+wkJOy+n5mlFScOq/a0oO2N7x+23Z2WdhUvLV35ydhkvTYHw1txcgW3I45 h7jASTye9u2ctP3o2XmiQfQxrqZ5TDXTNdwUYdbSbFirNAZm4Z1xFr6nfMxnrTXX m5PwSL38BnkcoXD1FCGlJ60UBHPSKYN6Q3CQZwbwaIlYsYnckYHORg/5/Elx5Onc iE5Dz0jGkIwpRGtaVPkhA== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgdefvdehiedvucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhepoffhfffugggtgffkvfevofgjfhesthejredtredtjeenucfhrhhomheplfgrvhhi vghrucfvihgruceofhhlohhsshesjhgvthhmrdhmvgeqnecuggftrfgrthhtvghrnhepvd dtjeeiheeijedtveeujeevvdekjeeuveekleeijeekfeejhfefveeiffffvdeinecuvehl uhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrhhomhepfhhlohhsshesjh gvthhmrdhmvgdpnhgspghrtghpthhtohepudefpdhmohguvgepshhmthhpohhuthdprhgt phhtthhopegrnhhgvghlohhgihhorggttghhihhnohdruggvlhhrvghgnhhosegtohhllh grsghorhgrrdgtohhmpdhrtghpthhtohepmhgrthhthhhirghsrdgsghhgsehgmhgrihhl rdgtohhmpdhrtghpthhtoheplhhorhgvnhiioheskhgvrhhnvghlrdhorhhgpdhrtghpth htoheplhhinhhugidqrghrmhdqkhgvrhhnvghlsehlihhsthhsrdhinhhfrhgruggvrggu rdhorhhgpdhrtghpthhtoheplhhinhhugidqmhgvughirghtvghksehlihhsthhsrdhinh hfrhgruggvrggurdhorhhgpdhrtghpthhtohepuggvrhgvnhdrfihusehmvgguihgrthgv khdrtghomhdprhgtphhtthhopehmihhnghihvghnrdhhshhivghhsehmvgguihgrthgvkh drtghomhdprhgtphhtthhopehrhiguvghrrdhlvggvsehmvgguihgrthgvkhdrtghomhdp rhgtphhtthhopehsvggrnhdrfigrnhhgsehmvgguihgrthgvkhdrtghomh X-ME-Proxy: Feedback-ID: i9dde48b3:Fastmail Received: by mailuser.phl.internal (Postfix, from userid 501) id 138A71EA006B; Wed, 25 Mar 2026 18:11:17 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface From: Javier Tia Date: Wed, 25 Mar 2026 16:11:01 -0600 Subject: [PATCH v3 12/13] wifi: mt76: mt7925: disable ASPM and runtime PM for MT7927 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260325-mt7927-wifi-support-v2-v3-12-5ca66c97a755@jetm.me> To: Felix Fietkau , Lorenzo Bianconi , Ryder Lee , Shayne Chen , Sean Wang , Matthias Brugger , AngeloGioacchino Del Regno , Ming Yen Hsieh , Deren Wu Cc: linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org X-Mailer: b4 0.15.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2922; i=floss@jetm.me; h=from:subject:message-id; bh=2iqjJzkxfCHr/WEpzj6LaYh+JuyD2C2/r14c7V0yo38=; b=owEB7QES/pANAwAKAbXuwwuoZ3cfAcsmYgBpxF1qvlXa+GRyNOT8nkxUvjlUbhCWJ7vFMh1vQ UbrZ9P12X2JAbMEAAEKAB0WIQSbE7ILzw7eI0VKk8m17sMLqGd3HwUCacRdagAKCRC17sMLqGd3 H8cmC/4/JBzUQWEO0ZBvP9nWGmMuy9TovpJ9fS6iVWDLKgrBWryNgT2GQXx9oTxcw8jgJIpPVed JY+8s2dKmr6BEV8S3U9U8uHVBoDKguxcE/KEkYBXU/R+nDQxSRWB2fFkXX4iT/h1EQkr19ryFZi u9dW+dqk5vFUe7NwgJJV3z/oafJmGmPBdlXyrCRu/SbDJhN79y8WDBC+7Al1lhIqIcEOHd3+i/E TATcG8lZMPSOU9w7eUObrneLAuvQ9M572lSl9IKYcsO7C7MMfVUHz/DTgjERSwqrA3atYU1nKhU kuRy+JC12q+iZkXRUFvEtNQDshFoccpFEdp09s5pmqaH4/IQt8T56evb/IfRxxUj+YzvqxMFZw6 NKN1DwApfwUX13rwwg00C3DalVwgoEK+6EzWFfUxgnv//mU9JRf4M0DChcV89EHzeMIFPl43A8x zMKcra7mKtzX6ZG8oLpXuhPIQUdRDR9mB++FgOVJRhdkKV/wasvy1k528Scw5ln/jnfyI= X-Developer-Key: i=floss@jetm.me; a=openpgp; fpr=9B13B20BCF0EDE23454A93C9B5EEC30BA867771F In-Reply-To: <20260325-mt7927-wifi-support-v2-v3-0-5ca66c97a755@jetm.me> References: <20260325-mt7927-wifi-support-v2-v3-0-5ca66c97a755@jetm.me> Disable PCIe ASPM unconditionally for MT7927. The CONNINFRA power domain and WFDMA register access are unreliable with PCIe L1 active, causing throughput to drop from 1+ Gbps to ~200 Mbps. Disable runtime PM and deep sleep for MT7927. The combo chip shares a CONNINFRA power domain between WiFi (PCIe) and BT (USB). SET_OWN/CLR_OWN transitions on the LPCTL register crash the BT firmware, requiring a full power cycle to recover. PM enablement will be addressed in a follow-up once safe power state transitions are determined. Signed-off-by: Javier Tia --- drivers/net/wireless/mediatek/mt76/mt7925/init.c | 6 +++++- drivers/net/wireless/mediatek/mt76/mt7925/pci.c | 9 +++++++-- 2 files changed, 12 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/init.c b/drivers/net/wireless/mediatek/mt76/mt7925/init.c index c4c99380f5b5..89140fc6a2b6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/init.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/init.c @@ -243,7 +243,11 @@ int mt7925_register_device(struct mt792x_dev *dev) dev->pm.idle_timeout = MT792x_PM_TIMEOUT; dev->pm.stats.last_wake_event = jiffies; dev->pm.stats.last_doze_event = jiffies; - if (!mt76_is_usb(&dev->mt76)) { + /* MT7927: runtime PM disabled. The combo chip shares a CONNINFRA + * power domain between WiFi (PCIe) and BT (USB). SET_OWN/CLR_OWN + * transitions on the LPCTL register crash BT firmware. + */ + if (!mt76_is_usb(&dev->mt76) && !is_mt7927(&dev->mt76)) { dev->pm.enable_user = true; dev->pm.enable = true; dev->pm.ds_enable_user = true; diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c index 393d9f408b84..693e08f35d68 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7925/pci.c +++ b/drivers/net/wireless/mediatek/mt76/mt7925/pci.c @@ -530,7 +530,13 @@ static int mt7925_pci_probe(struct pci_dev *pdev, if (ret) goto err_free_pci_vec; - if (mt7925_disable_aspm) + is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927); + + /* MT7927: CONNINFRA power domain and WFDMA register access are + * unreliable with PCIe L1 active, causing throughput to drop + * from 1+ Gbps to ~200 Mbps. Disable ASPM unconditionally. + */ + if (mt7925_disable_aspm || is_mt7927_hw) mt76_pci_disable_aspm(pdev); ops = mt792x_get_mac80211_ops(&pdev->dev, &mt7925_ops, @@ -562,7 +568,6 @@ static int mt7925_pci_probe(struct pci_dev *pdev, dev = container_of(mdev, struct mt792x_dev, mt76); dev->fw_features = features; dev->hif_ops = &mt7925_pcie_ops; - is_mt7927_hw = (pdev->device == 0x6639 || pdev->device == 0x7927); dev->irq_map = is_mt7927_hw ? &mt7927_irq_map : &irq_map; dev->dma_config = is_mt7927_hw ? &mt7927_dma_cfg : &mt7925_dma_cfg; mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]); -- 2.53.0