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 68BCAC77B7C for ; Fri, 5 May 2023 10:59:54 +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=wm1AorP5+YUbFeSvR6vCibzBJtJAf7RwUZG6EudCN9o=; b=guJg0d8cwnRwEk l0gp58kuzLgck216qtdVGjWkpLKBiMYZjGrPexbKIMi07pXeY/TRIZmsbeMHQwgpic9ZLQ3fT3yB8 zSdWAYG6AMJDDp4HgFA2zUSX5UNKnj3jQJekATTbXvdRzhLBpBPVEh2PfdiCKmZN0oqFPxdZk5MfA v9/Y+BA4EUNay61JHeWnKTTsM2iLOMACsNm6pvoo4b2DS8c8t9NYUoyFYV+r87/M7E2tkC7zI+rul vnVbZwzWVu8j8xmdJgMD9cIhDkg3KsaL+ew4qLXtsO1m3leiAgF4yyWMYDAroWMSf6Z7BJEmuG8mv 4YzPJKJlqATy4B+iY8xQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1put9S-00AZSK-30; Fri, 05 May 2023 10:59:02 +0000 Received: from mail11.truemail.it ([2001:4b7e:0:8::81]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1put9P-00AZKt-0d for linux-arm-kernel@lists.infradead.org; Fri, 05 May 2023 10:59:01 +0000 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-Disposition: inline In-Reply-To: <20230505112351.1c79f6b2@booty> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230505_035859_416695_B8A9103D X-CRM114-Status: GOOD ( 19.37 ) 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, 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel