From patchwork Mon Feb 24 02:20:59 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peter Chen X-Patchwork-Id: 3705881 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 69FF9BF13A for ; Mon, 24 Feb 2014 04:21:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8B10A2015D for ; Mon, 24 Feb 2014 04:21:00 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4305E2013D for ; Mon, 24 Feb 2014 04:20:59 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WHm5H-0006FX-OZ; 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Mon, 24 Feb 2014 03:16:25 +0000 (UTC) Received: from VA3EHSMHS020.bigfish.com (unknown [10.7.14.240]) by mail99-va3.bigfish.com (Postfix) with ESMTP id 0BF221E0253; Mon, 24 Feb 2014 03:16:25 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by VA3EHSMHS020.bigfish.com (10.7.99.30) with Microsoft SMTP Server (TLS) id 14.16.227.3; Mon, 24 Feb 2014 03:16:24 +0000 Received: from az84smr01.freescale.net (10.64.34.197) by 039-SN1MMR1-004.039d.mgd.msft.net (10.84.1.14) with Microsoft SMTP Server (TLS) id 14.3.158.2; Mon, 24 Feb 2014 03:16:22 +0000 Received: from shlinux1.ap.freescale.net (shlinux1.ap.freescale.net [10.192.225.216]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id s1O3FeOZ003011; Sun, 23 Feb 2014 20:16:19 -0700 From: Peter Chen To: , , , , , Subject: [PATCH v11 07/15] usb: phy-mxs: Enable IC fixes for related SoCs Date: Mon, 24 Feb 2014 10:20:59 +0800 Message-ID: <1393208467-6355-8-git-send-email-peter.chen@freescale.com> X-Mailer: git-send-email 1.7.8 In-Reply-To: <1393208467-6355-1-git-send-email-peter.chen@freescale.com> References: <1393208467-6355-1-git-send-email-peter.chen@freescale.com> MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-FOPE-CONNECTOR: Id%0$Dn%FREESCALE.MAIL.ONMICROSOFT.COM$RO%1$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140223_221654_528219_3E0E11E5 X-CRM114-Status: GOOD ( 12.78 ) X-Spam-Score: -1.3 (-) Cc: marex@denx.de, devicetree@vger.kernel.org, m.grzeschik@pengutronix.de, frank.li@freescale.com, linux-doc@vger.kernel.org, gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, peter.chen@freescale.com, kernel@pengutronix.de, festevam@gmail.com, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-3.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY, UNRESOLVED_TEMPLATE autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Two PHY bugs are fixed by IC logic, but these bits are not enabled by default, so we enable them at driver. The two bugs are: MXS_PHY_ABNORMAL_IN_SUSPEND and MXS_PHY_SENDING_SOF_TOO_FAST which are described at code. Signed-off-by: Peter Chen --- drivers/usb/phy/phy-mxs-usb.c | 23 +++++++++++++++++++++-- 1 files changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c index 1663a66..cb71135 100644 --- a/drivers/usb/phy/phy-mxs-usb.c +++ b/drivers/usb/phy/phy-mxs-usb.c @@ -31,6 +31,10 @@ #define HW_USBPHY_CTRL_SET 0x34 #define HW_USBPHY_CTRL_CLR 0x38 +#define HW_USBPHY_IP 0x90 +#define HW_USBPHY_IP_SET 0x94 +#define HW_USBPHY_IP_CLR 0x98 + #define BM_USBPHY_CTRL_SFTRST BIT(31) #define BM_USBPHY_CTRL_CLKGATE BIT(30) #define BM_USBPHY_CTRL_ENAUTOSET_USBCLKS BIT(26) @@ -42,6 +46,8 @@ #define BM_USBPHY_CTRL_ENUTMILEVEL2 BIT(14) #define BM_USBPHY_CTRL_ENHOSTDISCONDETECT BIT(1) +#define BM_USBPHY_IP_FIX (BIT(17) | BIT(18)) + #define to_mxs_phy(p) container_of((p), struct mxs_phy, phy) /* Do disconnection between PHY and controller without vbus */ @@ -60,6 +66,14 @@ */ #define MXS_PHY_SENDING_SOF_TOO_FAST BIT(2) +/* + * IC has bug fixes logic, they include + * MXS_PHY_ABNORMAL_IN_SUSPEND and MXS_PHY_SENDING_SOF_TOO_FAST + * which are described at above flags, the RTL will handle it + * according to different versions. + */ +#define MXS_PHY_NEED_IP_FIX BIT(3) + struct mxs_phy_data { unsigned int flags; }; @@ -70,11 +84,13 @@ static const struct mxs_phy_data imx23_phy_data = { static const struct mxs_phy_data imx6q_phy_data = { .flags = MXS_PHY_SENDING_SOF_TOO_FAST | - MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, + MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | + MXS_PHY_NEED_IP_FIX, }; static const struct mxs_phy_data imx6sl_phy_data = { - .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS, + .flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS | + MXS_PHY_NEED_IP_FIX, }; static const struct of_device_id mxs_phy_dt_ids[] = { @@ -118,6 +134,9 @@ static int mxs_phy_hw_init(struct mxs_phy *mxs_phy) BM_USBPHY_CTRL_ENUTMILEVEL3, base + HW_USBPHY_CTRL_SET); + if (mxs_phy->data->flags & MXS_PHY_NEED_IP_FIX) + writel(BM_USBPHY_IP_FIX, base + HW_USBPHY_IP_SET); + return 0; }