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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEF5DC77B75 for ; Fri, 5 May 2023 10:58:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231406AbjEEK66 (ORCPT ); Fri, 5 May 2023 06:58:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231365AbjEEK65 (ORCPT ); Fri, 5 May 2023 06:58:57 -0400 X-Greylist: delayed 65310 seconds by postgrey-1.37 at lindbergh.monkeyblade.net; Fri, 05 May 2023 03:58:54 PDT Received: from mail11.truemail.it (mail11.truemail.it [217.194.8.81]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1F52111629; Fri, 5 May 2023 03:58:54 -0700 (PDT) Received: from francesco-nb.int.toradex.com (93-49-2-63.ip317.fastwebnet.it [93.49.2.63]) by mail11.truemail.it (Postfix) with ESMTPA id BF79C20B74; Fri, 5 May 2023 12:58:49 +0200 (CEST) Date: Fri, 5 May 2023 12:58:45 +0200 From: Francesco Dolcini To: Luca Ceresoli Cc: Francesco Dolcini , devicetree@vger.kernel.org, festevam@gmail.com, gregkh@linuxfoundation.org, jun.li@nxp.com, kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org, peter.chen@nxp.com, robh+dt@kernel.org, s.hauer@pengutronix.de, shawnguo@kernel.org, Krzysztof Kozlowski , francesco.dolcini@toradex.com Subject: Re: [PATCH v2 2/3] usb: chipidea: imx: support disabling runtime-pm Message-ID: References: <23672d66d229d3be4cc854ddf1462c3507f1c2fc.camel@toradex.com> <20230504162312.1506763-1-luca.ceresoli@bootlin.com> <20230505112351.1c79f6b2@booty> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20230505112351.1c79f6b2@booty> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Fri, May 05, 2023 at 11:23:51AM +0200, Luca Ceresoli wrote: > On Thu, 4 May 2023 18:50:14 +0200 > Francesco Dolcini wrote: > > > Hello Luca, > > I guess your mail to Philippe bounced, let me try to answer since I am aware > > of the issue here. > > > > On Thu, May 04, 2023 at 06:23:12PM +0200, Luca Ceresoli wrote: > > > I found this thread after several hours spent in debugging why USB host is > > > not detecting new devices on a custom board using the iMX6ULL Colibri > > > SoM. > > > > > > My best workaround at the moment is: > > We have the same workaround in our BSP since quite some time, see > > https://git.toradex.com/cgit/meta-toradex-bsp-common.git/tree/recipes-kernel/linux/linux-toradex-mainline-git/0002-drivers-chipidea-disable-runtime-pm-for-imx6ul.patch > > > > > I haven't found any follow-up patches from you, so I'm wondering whether > > > you have made any progress on this issue. > > You can find the latest discussion on that regard here > > https://lore.kernel.org/all/Y1vLpaxpc5WBCuGD@francesco-nb.int.toradex.com/ > > Thanks for this pointer! I have read the discussion and it was a bit > confusing, especially about whether the hardware can work at all. It can work. Hardware wise is just fine, software wise I tried to explain how in my previous answer to you. Worst case we would have to describe the hardware in a different way in the DTS, but I do not expect this to be required. > Are you planning to continue on that work? Hopefully NXP / Li Jun will be able to help. Francesco