From patchwork Thu Jul 23 11:07:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 11680621 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7AE21913 for ; Thu, 23 Jul 2020 11:08:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61FDC22B47 for ; Thu, 23 Jul 2020 11:08:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="OfxOU1nX" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728531AbgGWLH7 (ORCPT ); Thu, 23 Jul 2020 07:07:59 -0400 Received: from mx07-00178001.pphosted.com ([62.209.51.94]:49370 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728515AbgGWLH6 (ORCPT ); Thu, 23 Jul 2020 07:07:58 -0400 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06NB7eMT021070; Thu, 23 Jul 2020 13:07:40 +0200 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=0vmigRJKSKCaaUgNfAUdO/lMA3zem7APyAy+GcZjtNk=; b=OfxOU1nXwxafRPK1I1CeoWexuLiwfeVd0E6lEUHtqXjpA/WAq0IPWDNIFOKEkuMac8jm X3LkXRG3jY2Ic55tKOuqnQbvpMX67iF/Yi0sGkdk+X+qpkqR12tqoy5pksMn7yWQ46ph gwChLb/p0ogDsDZe/p4nFa8OH/YNH/aYFwWTU34D2LmbcB1bxqDku7wWHAMRFh5z5Igk mtP0g03VdKtQhfWd87IQ7i4gFuAcnaXYUqrU+AOQiTwTuFlDgtYEVvvIa3ONv3rnG60G dRJSZsRJUIksnUWqOqoCvPWaSUI9o0kK7vmYIARwbUae3F3PYQnIaobldQJB7VmEEGsf /A== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 32bsfpt7rf-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 23 Jul 2020 13:07:40 +0200 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 5BCDD100038; Thu, 23 Jul 2020 13:07:34 +0200 (CEST) Received: from Webmail-eu.st.com (sfhdag3node2.st.com [10.75.127.8]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 4D9F32AD9F6; Thu, 23 Jul 2020 13:07:34 +0200 (CEST) Received: from localhost (10.75.127.47) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Thu, 23 Jul 2020 13:07:34 +0200 From: Amelie Delaunay To: Minas Harutyunyan , Felipe Balbi , Greg Kroah-Hartman , Rob Herring , Maxime Coquelin , Alexandre Torgue CC: , , , , , Fabrice Gasnier , Amelie Delaunay , Martin Blumenstingl Subject: [PATCH v2 3/3] usb: dwc2: don't use ID/Vbus detection if usb-role-switch on STM32MP15 SoCs Date: Thu, 23 Jul 2020 13:07:17 +0200 Message-ID: <20200723110717.18699-4-amelie.delaunay@st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200723110717.18699-1-amelie.delaunay@st.com> References: <20200723110717.18699-1-amelie.delaunay@st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.47] X-ClientProxiedBy: SFHDAG1NODE3.st.com (10.75.127.3) To SFHDAG3NODE2.st.com (10.75.127.8) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-23_03:2020-07-23,2020-07-23 signatures=0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org If usb-role-switch is present in the device tree, it means that ID and Vbus signals are not connected to the OTG controller but to an external component (GPIOs, Type-C controller). In this configuration, usb role switch is used to force valid sessions on STM32MP15 SoCs. Acked-by: Minas Harutyunyan Signed-off-by: Amelie Delaunay --- No changes in v2. --- drivers/usb/dwc2/params.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index ce736d67c7c3..d6690ee7af01 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -183,9 +183,11 @@ static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg) static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg) { struct dwc2_core_params *p = &hsotg->params; + struct device_node *np = hsotg->dev->of_node; p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; - p->activate_stm_id_vb_detection = true; + p->activate_stm_id_vb_detection = + !of_property_read_bool(np, "usb-role-switch"); p->host_rx_fifo_size = 440; p->host_nperio_tx_fifo_size = 256; p->host_perio_tx_fifo_size = 256;