From patchwork Wed Jan 22 19:04:19 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Fritz X-Patchwork-Id: 3524631 Return-Path: X-Original-To: patchwork-linux-omap@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 28EE4C02DC for ; Wed, 22 Jan 2014 19:04:59 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 52AFA20154 for ; Wed, 22 Jan 2014 19:04:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3089120172 for ; Wed, 22 Jan 2014 19:04:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755992AbaAVTEz (ORCPT ); Wed, 22 Jan 2014 14:04:55 -0500 Received: from mail-lb0-f170.google.com ([209.85.217.170]:61607 "EHLO mail-lb0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752408AbaAVTEx (ORCPT ); Wed, 22 Jan 2014 14:04:53 -0500 Received: by mail-lb0-f170.google.com with SMTP id u14so682698lbd.1 for ; Wed, 22 Jan 2014 11:04:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=googlemail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=/G9RtxRvF9LB6epgiVrHk9P35QdLA+Z7mxJ4KNMe+Wk=; b=Om/zM2wY+oDFl3Iaxob1P9Cx15aqDfY1MVybm28WLOVoXVkVAesoj8MSif3j5o7nhr ccheycbVvapmGTtIG9/VXtAQOJSAq7Lmit0gnKEDH29U6l31okV1epVkc5PEalwxoERY 8mpNcpc941+vZmPlEMBCyCwXflh3fS3V39/gU1j3Yd3U40HCRHIW0poaV3HO6qnaYGYY E4xKuttuSL5mqSy3WibckvuUrIJpPi5z1VRw2gpP1WylBWZDVSJBLiAFolc9AF1QgIru 8WKiPChenjo+LZ63uxagEsAtYooW208ta9R327ay9TnLZlXMzD3b4dV65fskFoBfdO5A SHIw== X-Received: by 10.152.197.67 with SMTP id is3mr1156030lac.61.1390417491374; Wed, 22 Jan 2014 11:04:51 -0800 (PST) Received: from mars.ipredator.se ([46.246.44.225]) by mx.google.com with ESMTPSA id np10sm8512422lbb.7.2014.01.22.11.04.48 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 22 Jan 2014 11:04:50 -0800 (PST) From: Christoph Fritz To: Nishanth Menon , Javier Martinez Canillas , Ulf Hansson , Mark Rutland , Ian Campbell , Tony Lindgren , Tomi Valkeinen , Archit Taneja , bcousson@baylibre.com, "Hans J. Koch" , Daniel Mack Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org Subject: [PATCH v2 4/5] ARM: OMAP2+: Add pdata quirk for sys_clkout2 for omap3 DBB056 Date: Wed, 22 Jan 2014 20:04:19 +0100 Message-Id: <1390417460-3134-5-git-send-email-chf.fritz@googlemail.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1390417460-3134-1-git-send-email-chf.fritz@googlemail.com> References: <1390417460-3134-1-git-send-email-chf.fritz@googlemail.com> Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.4 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_DKIM_INVALID, UNPARSEABLE_RELAY autolearn=ham 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 Full device tree support for clock control is not yet accomplished. Until then, configure the 24Mhz of sys_clkout2 to feed an USB-Hub here. Signed-off-by: Christoph Fritz --- arch/arm/mach-omap2/pdata-quirks.c | 37 ++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index a58590f..9ef7ca8 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -171,6 +171,43 @@ static void __init am3517_evm_legacy_init(void) } static void __init omap3_dbb056_legacy_init(void) { + struct clk *clkout2; + struct clk *cm96fck; + + /* Reparent clkout2 to 96M_FCK */ + pr_info("a83x-quirk: Late Reparent clkout2 to 96M_FCK\n"); + clkout2 = clk_get(NULL, "clkout2_src_ck"); + if(clkout2 < 0) { + pr_err("a83x-quirk: couldn't get clkout2_src_ck\n"); + return; + } + cm96fck = clk_get(NULL, "cm_96m_fck"); + if(cm96fck < 0) { + pr_err("a83x-quirk: couldn't get cm_96m_fck\n"); + return; + } + if(clk_set_parent(clkout2, cm96fck) < 0) { + pr_err("a83x-quirk: couldn't reparent clkout2_src_ck\n"); + return; + } + + /* Set clkout2 to 24MHz for internal usb hub*/ + pr_info("a83x-quirk: Set clkout2 to 24MHz for internal usb hub\n"); + clkout2 = clk_get(NULL, "sys_clkout2"); + if(clkout2 < 0) { + pr_err("a83x-quirk: couldn't get sys_clkout2\n"); + return; + } + if(clk_set_rate(clkout2, 24000000) < 0) { + printk(KERN_ERR "board-omap3evm: couldn't set sys_clkout2 rate\n"); + return; + } + if(clk_prepare_enable(clkout2) < 0) { + pr_err("a83x-quirk: couldn't enable sys_clkout2\n"); + return; + } + + /* Initialize display */ omap3_dbb056_display_init_of(); } #endif /* CONFIG_ARCH_OMAP3 */