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 8B904C48BEB for ; Wed, 14 Feb 2024 09:25:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=+i7NdQovAdErs70xr97SnPcByp7o+zFefWGl+LWu8NM=; b=sNRP7xS/vGwQlq 2WYTOZw7XxLWi4H7nJZRWUqaF65ZJ13wCGG1CC/ssGjrMhmt7EAVTnFUfdDra2SHq5Pr5dwr4MfS+ YaZfijnvk9z41RZh4hgMgYQsQKmVEN87PkzpZO4BmVHty0dALlhKV05za7DbO2vCzTw9FeL1tsDZU kIu/OkcSUyPTa30fx8NOrbNca76sUgkwsW8agtKpyfZUiy+x7MBgBPEup2LkwMwBbXU61gf35FYjc dojxZL6ax3UMkfbDVJjACLJCuJ6Gx+qppoTIyggktwOU0zlF90JJcFxZCPSQbxYnXoxiVOBs0nzXd GJZ10wQm/9SA7kynfF1Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1raBWI-0000000CHSa-46LH; Wed, 14 Feb 2024 09:25:34 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1raBWG-0000000CHS5-2jqc for linux-arm-kernel@lists.infradead.org; Wed, 14 Feb 2024 09:25:33 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id 9AC566173D; Wed, 14 Feb 2024 09:25:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6782FC433F1; Wed, 14 Feb 2024 09:25:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1707902731; bh=1Sxlw3DtRHuf/+Tg21dw2Havl+gSDlEajrxvtNXrd24=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=f1Dyi4h1lddcPnpZvA7OTRd+buAWhbnKUUuqixk424akMnmEN4iZ74PNi4FuEn0rJ 23/2YheISdo2HTLE9XYZ8dncxaDDDD/O2euCTjPU3ZjR16ZaK/zqBkNC9/tCPrS97O fLH6KR1Y0a8DjGJojnGklo56I1z4+cOmdwEXZn7JKNUmlmaeBeH1QxbHFvSJ9gTene 2BN30q5cPV9hG4U4InvnjJast3eA9+QSKgUNTKF4IiC2cfvDukmeSISKm5jNmrfN5g UdOo04qH+ihhW0jnsBPFESEBfnOQCJYc8xXadBMvKP+D2vKeyX16oad/age2C10HGr sGKnco2WhpVLg== Message-ID: <8fc9bac2-d0ce-4c24-b88b-fab1f65dcf37@kernel.org> Date: Wed, 14 Feb 2024 11:25:24 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1] arm64: dts: ti: k3-am62-main: disable usb lpm Content-Language: en-US To: Andrejs Cainikovs , Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Aswath Govindraju , Sjoerd Simons Cc: Andrejs Cainikovs , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20240209130213.38908-1-andrejs.cainikovs@gmail.com> From: Roger Quadros In-Reply-To: <20240209130213.38908-1-andrejs.cainikovs@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240214_012532_777846_CBBD3BDE X-CRM114-Status: GOOD ( 10.22 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 09/02/2024 15:02, Andrejs Cainikovs wrote: > From: Andrejs Cainikovs > > AM62 USB works with some devices, while failing to operate with others. > > [ 560.189822] xhci-hcd xhci-hcd.4.auto: xHCI Host Controller > [ 560.195631] xhci-hcd xhci-hcd.4.auto: new USB bus registered, assigned bus number 2 > [ 574.388509] xhci-hcd xhci-hcd.4.auto: can't setup: -110 > [ 574.393814] xhci-hcd xhci-hcd.4.auto: USB bus 2 deregistered > [ 574.399544] xhci-hcd: probe of xhci-hcd.4.auto failed with error -110 > > This seems to be related to LPM (Link Power Management), and disabling it > turns USB into reliable working state. > > As per AM62 reference manual: > >> 4.8.2.1 USB2SS Unsupported Features >> >> The following features are not supported on this family of devices: >> ... >> - USB 2.0 ECN: Link Power Management (LPM) >> ... > > Fixes: 2240f96cf3cd ("arm64: dts: ti: k3-am62-main: Add support for USB") > Signed-off-by: Andrejs Cainikovs Reviewed-by: Roger Quadros _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel