Message ID | 1420014219-915-2-git-send-email-Ying.Liu@freescale.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <dri-devel-bounces@lists.freedesktop.org> X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 39E179F344 for <patchwork-dri-devel@patchwork.kernel.org>; Wed, 31 Dec 2014 08:19:33 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7AB2C20131 for <patchwork-dri-devel@patchwork.kernel.org>; Wed, 31 Dec 2014 08:19:32 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 55186201C0 for <patchwork-dri-devel@patchwork.kernel.org>; Wed, 31 Dec 2014 08:19:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B630A6E20C; Wed, 31 Dec 2014 00:19:30 -0800 (PST) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from na01-bl2-obe.outbound.protection.outlook.com (mail-bl2on0142.outbound.protection.outlook.com [65.55.169.142]) by gabe.freedesktop.org (Postfix) with ESMTP id E237B6E20C for <dri-devel@lists.freedesktop.org>; Wed, 31 Dec 2014 00:19:29 -0800 (PST) Received: from BY2PR03CA074.namprd03.prod.outlook.com (10.141.249.47) by CY1PR0301MB0635.namprd03.prod.outlook.com (25.160.158.141) with Microsoft SMTP Server (TLS) id 15.1.49.12; Wed, 31 Dec 2014 08:19:27 +0000 Received: from BN1BFFO11FD015.protection.gbl (2a01:111:f400:7c10::1:150) by BY2PR03CA074.outlook.office365.com (2a01:111:e400:2c5d::47) with Microsoft SMTP Server (TLS) id 15.1.49.12 via Frontend Transport; Wed, 31 Dec 2014 08:19:26 +0000 Received: from az84smr01.freescale.net (192.88.158.2) by BN1BFFO11FD015.mail.protection.outlook.com (10.58.144.78) with Microsoft SMTP Server (TLS) id 15.1.49.13 via Frontend Transport; Wed, 31 Dec 2014 08:19:26 +0000 Received: from victor.ap.freescale.net (victor.ap.freescale.net [10.192.241.62]) by az84smr01.freescale.net (8.14.3/8.14.0) with ESMTP id sBV8JDg9014725; Wed, 31 Dec 2014 01:19:21 -0700 From: Liu Ying <Ying.Liu@freescale.com> To: <dri-devel@lists.freedesktop.org> Subject: [PATCH RFC v8 01/21] clk: divider: Correct parent clk round rate if no bestdiv is normally found Date: Wed, 31 Dec 2014 16:23:19 +0800 Message-ID: <1420014219-915-2-git-send-email-Ying.Liu@freescale.com> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1420014219-915-1-git-send-email-Ying.Liu@freescale.com> References: <1420014219-915-1-git-send-email-Ying.Liu@freescale.com> X-EOPAttributedMessage: 0 Received-SPF: Fail (protection.outlook.com: domain of freescale.com does not designate 192.88.158.2 as permitted sender) receiver=protection.outlook.com; client-ip=192.88.158.2; helo=az84smr01.freescale.net; Authentication-Results: spf=fail (sender IP is 192.88.158.2) smtp.mailfrom=Ying.Liu@freescale.com; X-Forefront-Antispam-Report: CIP:192.88.158.2; CTRY:US; IPV:NLI; EFV:NLI; SFV:NSPM; SFS:(10019020)(6009001)(339900001)(189002)(199003)(87936001)(6806004)(77096005)(62966003)(36756003)(69596002)(84676001)(50986999)(77156002)(89996001)(76176999)(2950100001)(68736005)(85426001)(31966008)(64706001)(50226001)(4396001)(229853001)(97736003)(104016003)(92566001)(46102003)(2351001)(575784001)(81156004)(86362001)(20776003)(120916001)(48376002)(50466002)(110136001)(106466001)(47776003)(19580405001)(19580395003)(21056001)(99396003)(107046002)(217873001); DIR:OUT; SFP:1102; SCL:1; SRVR:CY1PR0301MB0635; H:az84smr01.freescale.net; FPR:; SPF:Fail; MLV:sfv; PTR:InfoDomainNonexistent; MX:1; A:1; LANG:en; MIME-Version: 1.0 X-Microsoft-Antispam: UriScan:; X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:;SRVR:CY1PR0301MB0635; X-Exchange-Antispam-Report-Test: UriScan:; X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:(601004); SRVR:CY1PR0301MB0635; X-Forefront-PRVS: 0442E569BC X-Exchange-Antispam-Report-CFA-Test: BCL:0; PCL:0; RULEID:; SRVR:CY1PR0301MB0635; X-OriginatorOrg: freescale.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 31 Dec 2014 08:19:26.0142 (UTC) X-MS-Exchange-CrossTenant-Id: 710a03f5-10f6-4d38-9ff4-a80b81da590d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=710a03f5-10f6-4d38-9ff4-a80b81da590d; Ip=[192.88.158.2] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY1PR0301MB0635 Cc: stefan.wahren@i2se.com, devicetree@vger.kernel.org, linux@arm.linux.org.uk, kernel@pengutronix.de, linux-kernel@vger.kernel.org, a.hajda@samsung.com, mturquette@linaro.org, linux-arm-kernel@lists.infradead.org, andyshrk@gmail.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development <dri-devel.lists.freedesktop.org> List-Unsubscribe: <http://lists.freedesktop.org/mailman/options/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=unsubscribe> List-Archive: <http://lists.freedesktop.org/archives/dri-devel> List-Post: <mailto:dri-devel@lists.freedesktop.org> List-Help: <mailto:dri-devel-request@lists.freedesktop.org?subject=help> List-Subscribe: <http://lists.freedesktop.org/mailman/listinfo/dri-devel>, <mailto:dri-devel-request@lists.freedesktop.org?subject=subscribe> Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" <dri-devel-bounces@lists.freedesktop.org> X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, 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 |
diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c index c0a842b..f641d4b 100644 --- a/drivers/clk/clk-divider.c +++ b/drivers/clk/clk-divider.c @@ -311,7 +311,8 @@ static int clk_divider_bestdiv(struct clk_hw *hw, unsigned long rate, if (!bestdiv) { bestdiv = _get_maxdiv(divider); - *best_parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), 1); + *best_parent_rate = __clk_round_rate(__clk_get_parent(hw->clk), + MULT_ROUND_UP(rate, bestdiv)); } return bestdiv;
If no best divider is normally found, we will try to use the maximum divider. We should not set the parent clock rate to be 1Hz by force for being rounded. Instead, we should take the maximum divider as a base and calculate a correct parent clock rate for being rounded. Signed-off-by: Liu Ying <Ying.Liu@freescale.com> --- v7->v8: * None. v6->v7: * None. v5->v6: * None. v4->v5: * None. v3->v4: * None. v2->v3: * None. v1->v2: * None. drivers/clk/clk-divider.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)