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 F3368C4829A for ; Tue, 13 Feb 2024 11:43:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=OXpr7q5PHvFUIwcIUnw6ukhJO0lhFUH229+9JmsfNq4=; b=j1T5TcVvFFE2UR ZVgoiDIyiDBzB43QGvoqlXnYFqwHZUgxh51GByPv9ACeqj31GXW7+XSg0zzxiJaf1AkLfQ6JvoebQ RUpZyVQJM6kV/rIbvXFyMp3faHIgucOmV8C0SQm0TRwIIQPnriv7ZX0l6MIPdCKnkONUr2wRNtpe+ GJT3nLIN7h5nPL/r4PJ1wGkHgtnVHwpGVfiMt1eufw6jEnPgL6vG5JeeoDJztUPzXkemC38nO/jZQ Bk0+Xkxc8fEknD+7Zna2nbE6q275L2xlG6LLmWF+JWeOb7o2oI2GIntJ+OaGZM1N4WyIHdkIgV/Xy bbW1u1tHO0fAeq1tV51A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZrCO-000000093zQ-2PMq; Tue, 13 Feb 2024 11:43:40 +0000 Received: from mail11.truemail.it ([2001:4b7e:0:8::81]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rZrCI-000000093yK-3Olm for linux-arm-kernel@lists.infradead.org; Tue, 13 Feb 2024 11:43:36 +0000 Received: from francesco-nb (unknown [5.170.16.17]) by mail11.truemail.it (Postfix) with ESMTPA id 7B8B220A65; Tue, 13 Feb 2024 12:43:32 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=dolcini.it; s=default; t=1707824613; bh=Bp7pG2CUWQYmkgoE1nLhEi74JHI4RrXDPmnEHpNrJ3k=; h=From:To:Subject; b=sI3SJIhgbHDwl3u5ptprAx4mv/QomLlV1UL3bGxsM+Uc+ijsQqz6A5hASQcWFCKAS FLHprtLXCKKEJKEKWRqKUFLJFEh//GWc6yXBgJ25pb9QdevosIZCUgTCFp2cQKvwwo m/YwfJzpg4wTj6MPSNmxUDajdFuJk4mcTwSgFi8d0jB4VK9Oc5NtWMOykHEh5SvYLD yPMhJRWrTw7vXQxm2KtkUtuTTc34KJvg6C/uw6tsyYQvzXPxLIFDUPe0Iv4FIvUDjx bdxV3F33fYc+d8Xf7+KHCMcaM5N6jEQ7IdnFdV33sYBuu1gst+uW3HNJMeOkv2LYRz CoKaCcwa6Gb9Q== Date: Tue, 13 Feb 2024 12:43:28 +0100 From: Francesco Dolcini To: Andrejs Cainikovs Cc: Nishanth Menon , Vignesh Raghavendra , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Aswath Govindraju , Sjoerd Simons , Andrejs Cainikovs , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1] arm64: dts: ti: k3-am62-main: disable usb lpm Message-ID: <20240213114328.GA6727@francesco-nb> References: <20240209130213.38908-1-andrejs.cainikovs@gmail.com> MIME-Version: 1.0 Content-Disposition: inline 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-20240213_034335_029795_8820ED91 X-CRM114-Status: GOOD ( 12.04 ) 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 Fri, Feb 09, 2024 at 02:02:12PM +0100, 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: Francesco Dolcini Francesco _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel