Message ID | 1501647705-11636-1-git-send-email-yoshihiro.shimoda.uh@renesas.com (mailing list archive) |
---|---|
State | Accepted |
Delegated to: | Geert Uytterhoeven |
Headers | show
Return-Path: <linux-renesas-soc-owner@kernel.org> Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1329B6037D for <patchwork-linux-renesas-soc@patchwork.kernel.org>; Wed, 2 Aug 2017 04:25:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 04F1E286FF for <patchwork-linux-renesas-soc@patchwork.kernel.org>; Wed, 2 Aug 2017 04:25:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id EDBFA28705; Wed, 2 Aug 2017 04:25:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B7BCB28731 for <patchwork-linux-renesas-soc@patchwork.kernel.org>; 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02 Aug 2017 13:24:52 +0900 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=renesasgroup.onmicrosoft.com; s=selector1-renesas-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version; bh=tO5vnxLYxxISkapV/W3eZZ2pXj3gR89KyEc/Q7tB9ys=; b=PTpte74uOTqZtrsuvNDTidVkpS5mIbD+Z5LtRpFrNY/dvTV/8dGnMKDGe3/HZUDeNQOwgwVNbqyJbdOD57DDV86r+cihmwnmdg0TVHlHz++JqgbngAE71g5lZ2Q9TYAonSeD99dKdGbeMMrkX/fQ8qlNRKVIpn3sxboFzDA++Lk= Received: from localhost.localdomain (211.11.155.138) by SG2PR06MB0983.apcprd06.prod.outlook.com (2a01:111:e400:5213::25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1304.22; Wed, 2 Aug 2017 04:24:49 +0000 From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> To: balbi@kernel.org Cc: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, linux-renesas-soc@vger.kernel.org, stable@vger.kernel.org, Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Subject: [PATCH] usb: renesas_usbhs: Fix UGCTRL2 value for R-Car Gen3 Date: Wed, 2 Aug 2017 13:21:45 +0900 Message-Id: <1501647705-11636-1-git-send-email-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [211.11.155.138] X-ClientProxiedBy: TY1PR01CA0157.jpnprd01.prod.outlook.com (2603:1096:402:1::33) To SG2PR06MB0983.apcprd06.prod.outlook.com (2a01:111:e400:5213::25) X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 4fe1aa36-c9ab-4d5d-2555-08d4d95e6aaa X-MS-Office365-Filtering-HT: Tenant X-Microsoft-Antispam: UriScan:; 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diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index d544b33..02b67ab 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -20,9 +20,13 @@ /* Low Power Status register (LPSTS) */ #define LPSTS_SUSPM 0x4000 -/* USB General control register 2 (UGCTRL2), bit[31:6] should be 0 */ +/* + * USB General control register 2 (UGCTRL2) + * Remarks: bit[31:11] and bit[9:6] should be 0 + */ #define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */ #define UGCTRL2_USB0SEL_OTG 0x00000030 +#define UGCTRL2_VBUSSEL 0x00000400 static void usbhs_write32(struct usbhs_priv *priv, u32 reg, u32 data) { @@ -34,7 +38,8 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, { struct usbhs_priv *priv = usbhs_pdev_to_priv(pdev); - usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG); + usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG | + UGCTRL2_VBUSSEL); if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM);
The latest HW manual (Rev.0.55) shows us this UGCTRL2.VBUSSEL bit. If the bit sets to 1, the VBUS drive is controlled by phy related registers (called "UCOM Registers" on the manual). Since R-Car Gen3 environment will control VBUS by phy-rcar-gen3-usb2 driver, the UGCTRL2.VBUSSEL bit should be set to 1. So, this patch fixes the register's value. Otherwise, even if the ID pin indicates to peripheral, the R-Car will output USBn_PWEN to 1 when a host driver is running. Fixes: de18757e272d ("usb: renesas_usbhs: add R-Car Gen3 power control" Cc: <stable@vger.kernel.org> # v4.6+ Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> --- This patch is based on the latest Felipe's usb.git / testing/fixes branch (the commit id = 0539cab2ed9e52a57182a909e02db545e8fb1a38). drivers/usb/renesas_usbhs/rcar3.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)