From patchwork Fri Nov 21 13:35:47 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vivek Gautam X-Patchwork-Id: 5354971 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 6B8F39F2F1 for ; Fri, 21 Nov 2014 13:47:43 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 5583D20176 for ; Fri, 21 Nov 2014 13:47:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B72892016C for ; Fri, 21 Nov 2014 13:47:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758667AbaKUNrZ (ORCPT ); Fri, 21 Nov 2014 08:47:25 -0500 Received: from mailout1.samsung.com ([203.254.224.24]:21124 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758640AbaKUNrX (ORCPT ); Fri, 21 Nov 2014 08:47:23 -0500 Received: from epcpsbgr4.samsung.com (u144.gpu120.samsung.co.kr [203.254.230.144]) by mailout1.samsung.com (Oracle Communications Messaging Server 7u4-24.01 (7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0NFE00G7H6AWL010@mailout1.samsung.com>; Fri, 21 Nov 2014 22:47:21 +0900 (KST) Received: from epcpsbgm1.samsung.com ( [172.20.52.126]) by epcpsbgr4.samsung.com (EPCPMTA) with SMTP id B6.F7.18167.8624F645; Fri, 21 Nov 2014 22:47:20 +0900 (KST) X-AuditID: cbfee690-f79ab6d0000046f7-c2-546f42688a52 Received: from epmmp2 ( [203.254.227.17]) by epcpsbgm1.samsung.com (EPCPMTA) with SMTP id FF.57.20081.8624F645; Fri, 21 Nov 2014 22:47:20 +0900 (KST) Received: from chromebld-server.sisodomain.com ([107.108.73.106]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0NFE0066D61YU010@mmp2.samsung.com>; Fri, 21 Nov 2014 22:47:20 +0900 (KST) From: Vivek Gautam To: linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, balbi@ti.com, kishon@ti.com Cc: linux-omap@vger.kernel.org, gregkh@linuxfoundation.org, tomasz.figa@gmail.com, s.nawrocki@samsung.com, robh+dt@kernel.org, stern@rowland.harvard.edu, kgene.kim@samsung.com, Vivek Gautam Subject: [PATCH 04/11] dwc3: exynos: Add provision for AXI UpScaler clock on exynos7 Date: Fri, 21 Nov 2014 19:05:47 +0530 Message-id: <1416576954-11997-5-git-send-email-gautam.vivek@samsung.com> X-Mailer: git-send-email 1.7.9.5 In-reply-to: <1416576954-11997-1-git-send-email-gautam.vivek@samsung.com> References: <1416576954-11997-1-git-send-email-gautam.vivek@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFmpjkeLIzCtJLcpLzFFi42JZI2JSp5vhlB9i8OO6icXB+/UW84+cY7Vo u3KQ3aJ58Xo2i94FV9ksLjztYbO4vGsOm8XsJf0sFjPO72OyWLSsldmide8RdovDb9pZLSb8 vsBmsWrXH0YHPo+ds+6ye2xa1cnmsX/uGnaP2Xd/MHr0bVnF6HH8xnYmj8+b5ALYo7hsUlJz MstSi/TtErgy9vwuK1gjU7Fo0n3GBsaT4l2MnBwSAiYSd+cfZ4OwxSQu3FsPZHNxCAksZZRY +OAwI0zRuwdzWSAS0xkl5jxrg3ImMEnMWb6fHaSKTUBXountLrAOEYHZjBJtB4VAipgF7jFK fH7/HaiDg0NYIEzi5hRjkBoWAVWJqfuWsoLYvAIeEqdeH2IEKZEQUJCYM8kGJMwp4CnRsv4y E4gtBFSyZtduRpCREgL32CVebmpigpgjIPFt8iEWiF5ZiU0HmCGOlpQ4uOIGywRG4QWMDKsY RVMLkguKk9KLTPSKE3OLS/PS9ZLzczcxAqPn9L9nE3Yw3jtgfYhRgINRiYf3w/S8ECHWxLLi ytxDjKZAGyYyS4km5wNjNK8k3tDYzMjC1MTU2Mjc0kxJnPe11M9gIYH0xJLU7NTUgtSi+KLS nNTiQ4xMHJxSDYwKM7gixH9PSN42JeDAw8uTjjn97EnvTbq8+Wd//+yqo4ovAi5ouU3L4dtu ZeV/R3f5993nTWaXf251Fjv6bPX80xIKMv4//xZ5lE08cOaMysGDsUZiknOCE+dq/j5sf+OU D3Pvn4VhT5+lzZyfFbTvcIqqrUaqXupKtuxj1UdzKhy+n517TnG1EktxRqKhFnNRcSIA22QK kJkCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrAIsWRmVeSWpSXmKPExsVy+t9jQd0Mp/wQg84rWhYH79dbzD9yjtWi 7cpBdovmxevZLHoXXGWzuPC0h83i8q45bBazl/SzWMw4v4/JYtGyVmaL1r1H2C0Ov2lntZjw +wKbxapdfxgd+Dx2zrrL7rFpVSebx/65a9g9Zt/9wejRt2UVo8fxG9uZPD5vkgtgj2pgtMlI TUxJLVJIzUvOT8nMS7dV8g6Od443NTMw1DW0tDBXUshLzE21VXLxCdB1y8wBullJoSwxpxQo FJBYXKykb4dpQmiIm64FTGOErm9IEFyPkQEaSFjDmLHnd1nBGpmKRZPuMzYwnhTvYuTkkBAw kXj3YC4LhC0mceHeerYuRi4OIYHpjBJznrWxQDgTmCTmLN/PDlLFJqAr0fR2FyOILSIwm1Gi 7aAQSBGzwD1Gic/vvwN1cHAIC4RJ3JxiDFLDIqAqMXXfUlYQm1fAQ+LU60OMICUSAgoScybZ gIQ5BTwlWtZfZgKxhYBK1uzazTiBkXcBI8MqRtHUguSC4qT0XEO94sTc4tK8dL3k/NxNjODY fCa1g3Flg8UhRgEORiUe3g/T80KEWBPLiitzDzFKcDArifCWC+eHCPGmJFZWpRblxxeV5qQW H2I0BTpqIrOUaHI+MG3klcQbGpuYmxqbWppYmJhZKonz3riZGyIkkJ5YkpqdmlqQWgTTx8TB KdXA6HHPmLu6VfaH8cMg3gkBL9bPPhZY9rnaLHNZ0Wz3jiVfeauWTkn5ZfSi/ptblXfiSmU+ I5k55sWrLVoFPErdZhnLrJGcfToz51JDJZNB3cQ5tQwzIyquaPPo/53xwnvD7tzXOs5Vd63X NksafVm+5XDmQ9OLx34fOM3Iov+e+26sXlZoj+ZSJZbijERDLeai4kQAzVV+N+MCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY 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 DWC3 controller on Exynos7 SoC has separate control for AXI UpScaler which connects DWC3 DRD controller to AXI bus. Get the gate clock for the same to control it across power cycles. Suggested-by: Anton Tikhomirov Signed-off-by: Vivek Gautam --- Documentation/devicetree/bindings/usb/exynos-usb.txt | 6 ++++-- drivers/usb/dwc3/dwc3-exynos.c | 17 +++++++++++++++++ 2 files changed, 21 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/usb/exynos-usb.txt b/Documentation/devicetree/bindings/usb/exynos-usb.txt index a3b5990..9b4dbe3 100644 --- a/Documentation/devicetree/bindings/usb/exynos-usb.txt +++ b/Documentation/devicetree/bindings/usb/exynos-usb.txt @@ -82,8 +82,10 @@ Example: DWC3 Required properties: - - compatible: should be "samsung,exynos5250-dwusb3" for USB 3.0 DWC3 - controller. + - compatible: should be one of the following - + "samsung,exynos5250-dwusb3": for USB 3.0 DWC3 controller on + Exynos5250/5420. + "samsung,exynos7-dwusb3": for USB 3.0 DWC3 controller on Exynos7. - #address-cells, #size-cells : should be '1' if the device has sub-nodes with 'reg' property. - ranges: allows valid 1:1 translation between child's address space and diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index af15ab3..6ae8fe5 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -36,6 +36,7 @@ struct dwc3_exynos { struct clk *clk; struct clk *susp_clk; + struct clk *axius_clk; struct regulator *vdd33; struct regulator *vdd10; @@ -150,6 +151,17 @@ static int dwc3_exynos_probe(struct platform_device *pdev) } clk_prepare_enable(exynos->susp_clk); + if (of_device_is_compatible(node, "samsung,exynos7-dwusb3")) { + exynos->axius_clk = devm_clk_get(dev, "usbdrd30_axius_clk"); + if (IS_ERR(exynos->axius_clk)) { + dev_err(dev, "no AXI UpScaler clk specified\n"); + return -ENODEV; + } + clk_prepare_enable(exynos->axius_clk); + } else { + exynos->axius_clk = NULL; + } + exynos->vdd33 = devm_regulator_get(dev, "vdd33"); if (IS_ERR(exynos->vdd33)) { ret = PTR_ERR(exynos->vdd33); @@ -191,6 +203,7 @@ err4: err3: regulator_disable(exynos->vdd33); err2: + clk_disable_unprepare(exynos->axius_clk); clk_disable_unprepare(exynos->susp_clk); clk_disable_unprepare(exynos->clk); return ret; @@ -204,6 +217,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev) platform_device_unregister(exynos->usb2_phy); platform_device_unregister(exynos->usb3_phy); + clk_disable_unprepare(exynos->axius_clk); clk_disable_unprepare(exynos->susp_clk); clk_disable_unprepare(exynos->clk); @@ -216,6 +230,7 @@ static int dwc3_exynos_remove(struct platform_device *pdev) #ifdef CONFIG_OF static const struct of_device_id exynos_dwc3_match[] = { { .compatible = "samsung,exynos5250-dwusb3" }, + { .compatible = "samsung,exynos7-dwusb3" }, {}, }; MODULE_DEVICE_TABLE(of, exynos_dwc3_match); @@ -226,6 +241,7 @@ static int dwc3_exynos_suspend(struct device *dev) { struct dwc3_exynos *exynos = dev_get_drvdata(dev); + clk_disable(exynos->axius_clk); clk_disable(exynos->clk); regulator_disable(exynos->vdd33); @@ -251,6 +267,7 @@ static int dwc3_exynos_resume(struct device *dev) } clk_enable(exynos->clk); + clk_enable(exynos->axius_clk); /* runtime set active to reflect active state. */ pm_runtime_disable(dev);