From patchwork Mon Nov 23 09:01:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 11924617 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,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 85309C64E69 for ; Mon, 23 Nov 2020 09:02:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2EED220888 for ; Mon, 23 Nov 2020 09:02:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="AAWcjokk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726996AbgKWJCc (ORCPT ); Mon, 23 Nov 2020 04:02:32 -0500 Received: from mx07-00178001.pphosted.com ([185.132.182.106]:50966 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727948AbgKWJCV (ORCPT ); Mon, 23 Nov 2020 04:02:21 -0500 Received: from pps.filterd (m0046037.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 0AN91lRi022168; Mon, 23 Nov 2020 10:02:11 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=STMicroelectronics; bh=urZWggzuIM/HzomXlAhlMtATZKXhBngJV7lZxpM9LLo=; b=AAWcjokkJJteNl+v3CKyu3eLPpbeD4ILeeHRWxLudP51mUbgtVTvIzVAOFI9x703VjuZ EfQv+deCS0Au2eXlczPukBnhiStNT9AaaKImZSyh3c3KInIhSfIL8/oljkJ5DSg24z0F ddDD6foHl2GcQFD820gkU63fDnU69ujI34nZyw+V5qSyldT0412wHTsN9fixFcGwJ1vj CnnBApxxgvk3pvokQu4linB5OBbH9peoEwcIlCAK1c2d5+ARoln2FD0SlBKD9+mFuUep cmPE/6zukq24Qby49sxj6aO/g/uTvFPIdEUjniBJl+2PMx5nHVF1WHD4iLbwI/zOjzjB rA== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 34y01c86eg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 23 Nov 2020 10:02:11 +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 5909910003B; Mon, 23 Nov 2020 10:02:10 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 45D24231F85; Mon, 23 Nov 2020 10:02:10 +0100 (CET) Received: from localhost (10.75.127.47) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 23 Nov 2020 10:01:21 +0100 From: Amelie Delaunay To: Minas Harutyunyan , Felipe Balbi , Greg Kroah-Hartman CC: , , , Fabrice Gasnier , Amelie Delaunay Subject: [PATCH 3/3] usb: dwc2: disable Link Power Management on STM32MP15 HS OTG Date: Mon, 23 Nov 2020 10:01:14 +0100 Message-ID: <20201123090114.12641-4-amelie.delaunay@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201123090114.12641-1-amelie.delaunay@st.com> References: <20201123090114.12641-1-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG2NODE2.st.com (10.75.127.5) To SFHDAG3NODE2.st.com (10.75.127.8) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.312,18.0.737 definitions=2020-11-23_02:2020-11-20,2020-11-23 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[] = {