From patchwork Mon Nov 23 09:01:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie DELAUNAY X-Patchwork-Id: 331867 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=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 ADBD3C63777 for ; Mon, 23 Nov 2020 09:02:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2A24120738 for ; Mon, 23 Nov 2020 09:02:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=st.com header.i=@st.com header.b="fCnOyjvh" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727966AbgKWJCV (ORCPT ); Mon, 23 Nov 2020 04:02:21 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:32632 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727927AbgKWJCU (ORCPT ); Mon, 23 Nov 2020 04:02:20 -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 0AN8vb9P024874; Mon, 23 Nov 2020 10:02:13 +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=bY3Gi76L0pJYGKWD/yORpPP0H2/iyGpFzjwdkCphzbQ=; b=fCnOyjvhrKCTM9dLel3EgXc8BVIrhDrk1bMB0gu0U758FpX8I+g6yh8Ew7bs8t+QOMK7 OGtH9awWPJummUfDqs7blPQ5ZN1y/Iq6FTPPnI3JFQCAEpJwpCm857Oa9Inw5NZRAuDd +VaDGxZzsjdmJ/g3JpljOV/pv8LJHaHPwtLf2+MECZw3ZJiXhL1VAlN9vhDZYhg4mazr HUN8DnDBEvfQWerLmLdom0J02bB0/Jhuktr6zW4qofA0inm6tfP7CoyfqpXsuYufO/KG may3HmcnSM1apdOkNNbaRUq6SOTyrofNemDPjpTCFOmGqE1L2id9VJeJduZv5h/iojLD 1w== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 34y0hj15a8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 23 Nov 2020 10:02:13 +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 4E88C10003A; 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 3ABAB231F82; Mon, 23 Nov 2020 10:02:10 +0100 (CET) Received: from localhost (10.75.127.44) by SFHDAG3NODE2.st.com (10.75.127.8) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 23 Nov 2020 10:01:20 +0100 From: Amelie Delaunay To: Minas Harutyunyan , Felipe Balbi , Greg Kroah-Hartman CC: , , , Fabrice Gasnier , Amelie Delaunay Subject: [PATCH 2/3] usb: dwc2: enable FS/LS PHY clock select on STM32MP15 FS OTG Date: Mon, 23 Nov 2020 10:01:13 +0100 Message-ID: <20201123090114.12641-3-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: [10.75.127.44] X-ClientProxiedBy: SFHDAG3NODE3.st.com (10.75.127.9) 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 When the core is in FS host mode, using the FS transceiver, and a Low-Speed device is connected, transceiver clock is 6Mhz. So, to support Low-Speed devices, enable support of FS/LS Low Power mode, so that the PHY supplies a 6 MHz clock during Low-Speed mode. Signed-off-by: Amelie Delaunay Acked-by: Minas Harutyunyan --- drivers/usb/dwc2/params.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 0df693319f0a..9e5dd7f3f2f6 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -179,6 +179,8 @@ static void dwc2_set_stm32mp15_fsotg_params(struct dwc2_hsotg *hsotg) p->activate_stm_id_vb_detection = true; p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; p->power_down = DWC2_POWER_DOWN_PARAM_NONE; + p->host_support_fs_ls_low_power = true; + p->host_ls_low_power_phy_clk = true; } static void dwc2_set_stm32mp15_hsotg_params(struct dwc2_hsotg *hsotg)