From patchwork Tue May 14 14:55:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chris Brandt X-Patchwork-Id: 10943309 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E0063912 for ; Tue, 14 May 2019 15:15:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CF4C52844C for ; Tue, 14 May 2019 15:15:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C31B928736; Tue, 14 May 2019 15:15:56 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 601532844C for ; Tue, 14 May 2019 15:15:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725854AbfENPP4 (ORCPT ); Tue, 14 May 2019 11:15:56 -0400 Received: from pbmsgap01.intersil.com ([192.157.179.201]:51954 "EHLO pbmsgap01.intersil.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726098AbfENPPz (ORCPT ); Tue, 14 May 2019 11:15:55 -0400 Received: from pps.filterd (pbmsgap01.intersil.com [127.0.0.1]) by pbmsgap01.intersil.com (8.16.0.27/8.16.0.27) with SMTP id x4EEqbkf026036; Tue, 14 May 2019 10:57:03 -0400 Received: from pbmxdp02.intersil.corp (pbmxdp02.pb.intersil.com [132.158.200.223]) by pbmsgap01.intersil.com with ESMTP id 2sdswyjjqg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 14 May 2019 10:57:03 -0400 Received: from pbmxdp02.intersil.corp (132.158.200.223) by pbmxdp02.intersil.corp (132.158.200.223) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384_P384) id 15.1.1531.3; Tue, 14 May 2019 10:57:01 -0400 Received: from localhost.localdomain (132.158.202.108) by pbmxdp02.intersil.corp (132.158.200.223) with Microsoft SMTP Server id 15.1.1531.3 via Frontend Transport; Tue, 14 May 2019 10:57:01 -0400 From: Chris Brandt To: Rob Herring , Mark Rutland , Greg Kroah-Hartman , Simon Horman , Yoshihiro Shimoda CC: Geert Uytterhoeven , Sergei Shtylyov , Chunfeng Yun , , , , "Chris Brandt" Subject: [PATCH v3 03/15] phy: renesas: rcar-gen3-usb2: detect usb_x1 clock Date: Tue, 14 May 2019 09:55:53 -0500 Message-ID: <20190514145605.19112-4-chris.brandt@renesas.com> X-Mailer: git-send-email 2.16.1 In-Reply-To: <20190514145605.19112-1-chris.brandt@renesas.com> References: <20190514145605.19112-1-chris.brandt@renesas.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-05-14_09:,, signatures=0 X-Proofpoint-Spam-Details: rule=junk_notspam policy=junk score=0 suspectscore=2 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=925 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1905140106 X-Proofpoint-Spam-Reason: mlx Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The RZ/A2 has an optional dedicated 48MHz clock input for the PLL. If a clock node named 'usb_x1' exists and set to non-zero, then we can assume we want it use it. Signed-off-by: Chris Brandt Reviewed-by: Yoshihiro Shimoda Reviewed-by: Simon Horman --- v3: * avoid magic number * use devm_clk_get and clk_get_rate v2: * use 'usb_x1' clock node instead of 'renesas,uses_usb_x1' property --- drivers/phy/renesas/phy-rcar-gen3-usb2.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c index 1322185a00a2..06e0fc804226 100644 --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -34,6 +35,7 @@ #define USB2_VBCTRL 0x60c #define USB2_LINECTRL1 0x610 #define USB2_ADPCTRL 0x630 +#define USB2_PHYCLK_CTRL 0x644 /* INT_ENABLE */ #define USB2_INT_ENABLE_UCOM_INTEN BIT(3) @@ -75,6 +77,9 @@ #define USB2_ADPCTRL_IDPULLUP BIT(5) /* 1 = ID sampling is enabled */ #define USB2_ADPCTRL_DRVVBUS BIT(4) +/* PHYCLK_CTRL */ +#define PHYCLK_CTRL_UCLKSEL BIT(0) + #define NUM_OF_PHYS 4 enum rcar_gen3_phy_index { PHY_INDEX_BOTH_HC, @@ -110,6 +115,7 @@ struct rcar_gen3_chan { bool extcon_host; bool is_otg_channel; bool uses_otg_pins; + bool uses_usb_x1; }; /* @@ -391,6 +397,9 @@ static int rcar_gen3_phy_usb2_init(struct phy *p) void __iomem *usb2_base = channel->base; u32 val; + if (channel->uses_usb_x1) + writel(PHYCLK_CTRL_UCLKSEL, usb2_base + USB2_PHYCLK_CTRL); + /* Initialize USB2 part */ val = readl(usb2_base + USB2_INT_ENABLE); val |= USB2_INT_ENABLE_UCOM_INTEN | rphy->int_enable_bits; @@ -583,6 +592,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct rcar_gen3_chan *channel; struct phy_provider *provider; + struct clk *usb_x1_clk; struct resource *res; const struct phy_ops *phy_usb2_ops; int irq, ret = 0, i; @@ -630,6 +640,10 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) } } + usb_x1_clk = devm_clk_get(dev, "usb_x1"); + if (!IS_ERR(usb_x1_clk) && clk_get_rate(usb_x1_clk)) + channel->uses_usb_x1 = true; + /* * devm_phy_create() will call pm_runtime_enable(&phy->dev); * And then, phy-core will manage runtime pm for this device.