From patchwork Tue Jan 5 09:48:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 11998507 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9DEE5C433E9 for ; Tue, 5 Jan 2021 09:50:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7584622482 for ; Tue, 5 Jan 2021 09:50:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728848AbhAEJuI (ORCPT ); Tue, 5 Jan 2021 04:50:08 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:18136 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728690AbhAEJt4 (ORCPT ); Tue, 5 Jan 2021 04:49:56 -0500 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 1059ls3e009604; Tue, 5 Jan 2021 10:49:09 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=8VQVjuIjAWhXRhZPWLiv4kmSLHbtYSuNMmvdHOu/vt8=; b=dXmPafP5UVX55pY94Oa6bB/lcOsdpyIRAkK7HR4bRhQG4nBRCQP5j6X+pZli/Ls4sbyr EXnA5xN7780XRo9c7eD6+RQZSpkdrpn+JySS+yVDRGZ1XCz2fGbyvpLJ/0qvMDyVdZYw n4LvlWhsugY/vmivRxfnfEwxqgoX59rZeD5ILWVtPdE9OEbLEfZr+Zor/bLARrGhiI/M YUd2oYy8KPC8cU+sAQFD6XBhfh9QOv7o2OCIN/pEsz2W6X+PJXuCmDtDF3W15LW6o/cJ /5TYEOn37uMbaAw6pBPEbyffN5syp9qWJ+qFzjVhwpmEtHncrgpDc2qgQKEt3RZhvPdG /Q== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 35teuv07p1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 05 Jan 2021 10:49:09 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 0906110002A; Tue, 5 Jan 2021 10:49:09 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id EBBF123051B; Tue, 5 Jan 2021 10:49:08 +0100 (CET) Received: from localhost (10.75.127.47) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 5 Jan 2021 10:49:08 +0100 From: Amelie Delaunay To: Minas Harutyunyan , Felipe Balbi , Greg Kroah-Hartman CC: , , , Fabrice Gasnier , Amelie Delaunay Subject: [PATCH v2 3/3] usb: dwc2: disable Link Power Management on STM32MP15 HS OTG Date: Tue, 5 Jan 2021 10:48:55 +0100 Message-ID: <20210105094855.30763-4-amelie.delaunay@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210105094855.30763-1-amelie.delaunay@foss.st.com> References: <20210105094855.30763-1-amelie.delaunay@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG3NODE3.st.com (10.75.127.9) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.343,18.0.737 definitions=2021-01-05_01:2021-01-05,2021-01-05 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org Link Power Management (LPM) on STM32MP15 OTG HS encounters instabilities with some Host controllers. OTG core fails to exit L1 state in 200us: "dwc2 49000000.usb-otg: Failed to exit L1 sleep state in 200us." Then the device is still not enumerated. To avoid this issue, disable Link Power Management on STM32MP15 HS OTG. Signed-off-by: Amelie Delaunay Acked-by: Minas Harutyunyan --- drivers/usb/dwc2/params.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 9e5dd7f3f2f6..92df3d620f7d 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -194,6 +194,10 @@ static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg) p->host_perio_tx_fifo_size = 256; p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; p->power_down = DWC2_POWER_DOWN_PARAM_NONE; + p->lpm = false; + p->lpm_clock_gating = false; + p->besl = false; + p->hird_threshold_en = false; } const struct of_device_id dwc2_of_match_table[] = {