From patchwork Tue Dec 24 19:21:27 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anson Huang X-Patchwork-Id: 3401041 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 A2ABFC0D4A for ; Tue, 24 Dec 2013 07:24:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id D533B20614 for ; Tue, 24 Dec 2013 07:24:08 +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 ACD01205F4 for ; Tue, 24 Dec 2013 07:24:07 +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 1VvMLR-00024M-HS; Tue, 24 Dec 2013 07:24:01 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1VvMLP-0008UB-4q; Tue, 24 Dec 2013 07:23:59 +0000 Received: from mail-db9lp0249.outbound.messaging.microsoft.com ([213.199.154.249] helo=db9outboundpool.messaging.microsoft.com) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1VvMLM-0008Td-RZ for linux-arm-kernel@lists.infradead.org; Tue, 24 Dec 2013 07:23:57 +0000 Received: from mail91-db9-R.bigfish.com (10.174.16.240) by DB9EHSOBE003.bigfish.com (10.174.14.66) with Microsoft SMTP Server id 14.1.225.22; Tue, 24 Dec 2013 07:23:34 +0000 Received: from mail91-db9 (localhost [127.0.0.1]) by mail91-db9-R.bigfish.com (Postfix) with ESMTP id BE3AE800BD; Tue, 24 Dec 2013 07:23:34 +0000 (UTC) X-Forefront-Antispam-Report: CIP:70.37.183.190; KIP:(null); UIP:(null); IPV:NLI; H:mail.freescale.net; RD:none; EFVD:NLI X-SpamScore: 3 X-BigFish: VS3(zzzz1f42h2148h208ch1ee6h1de0h1fdah2073h2146h1202h1e76h2189h1d1ah1d2ah1fc6h1082kzz1de098h8275bh1de097hz2dh2a8h839hd24he5bhf0ah1288h12a5h12a9h12bdh12e5h137ah139eh13b6h1441h1504h1537h162dh1631h1758h1898h18e1h1946h19b5h1ad9h1b0ah1b2fh2222h224fh1fb3h1d0ch1d2eh1d3fh1dc1h1dfeh1dffh1e23h1fe8h1ff5h2218h2216h226dh22d0h2327h2336h1155h) Received: from mail91-db9 (localhost.localdomain [127.0.0.1]) by mail91-db9 (MessageSwitch) id 1387869813154848_2161; Tue, 24 Dec 2013 07:23:33 +0000 (UTC) Received: from DB9EHSMHS013.bigfish.com (unknown [10.174.16.253]) by mail91-db9.bigfish.com (Postfix) with ESMTP id 205D4A0047; Tue, 24 Dec 2013 07:23:33 +0000 (UTC) Received: from mail.freescale.net (70.37.183.190) by DB9EHSMHS013.bigfish.com (10.174.14.23) with Microsoft SMTP Server (TLS) id 14.16.227.3; Tue, 24 Dec 2013 07:23:32 +0000 Received: from tx30smr01.am.freescale.net (10.81.153.31) by 039-SN1MMR1-005.039d.mgd.msft.net (10.84.1.17) with Microsoft SMTP Server (TLS) id 14.3.158.2; Tue, 24 Dec 2013 07:23:28 +0000 Received: from ubuntu.ap.freescale.net (ubuntu-010192242118.ap.freescale.net [10.192.242.118]) by tx30smr01.am.freescale.net (8.14.3/8.14.0) with ESMTP id rBO7NPxb025990; Tue, 24 Dec 2013 00:23:26 -0700 From: Anson Huang To: , Subject: [PATCH] ARM: imx: improve status check of clock gate Date: Tue, 24 Dec 2013 14:21:27 -0500 Message-ID: <1387912887-6402-1-git-send-email-b20788@freescale.com> X-Mailer: git-send-email 1.7.9.5 MIME-Version: 1.0 X-OriginatorOrg: freescale.com X-FOPE-CONNECTOR: Id%0$Dn%*$RO%0$TLS%0$FQDN%$TlsDn% X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20131224_022356_989964_1DC0F2D8 X-CRM114-Status: UNSURE ( 9.40 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.0 (/) Cc: linux-kernel@vger.kernel.org, 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=-2.8 required=5.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, RCVD_IN_DNSWL_MED, 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 For ccm clock gate, both 2b'11 and 2b'01 should be treated as clock enabled, see below description in CCM, whenver CPU trys to check clock gate's status, system will be in run mode. 2b'00: clock is off during all modes; 2b'01: clock is on in run mode, but off in wait and stop mode; 2b'10: Not applicable; 2b'11: clock is on during all modes, except stop mode. Signed-off-by: Anson Huang --- arch/arm/mach-imx/clk-gate2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mach-imx/clk-gate2.c b/arch/arm/mach-imx/clk-gate2.c index a63e415..a2ecc00 100644 --- a/arch/arm/mach-imx/clk-gate2.c +++ b/arch/arm/mach-imx/clk-gate2.c @@ -72,7 +72,7 @@ static int clk_gate2_is_enabled(struct clk_hw *hw) reg = readl(gate->reg); - if (((reg >> gate->bit_idx) & 3) == 3) + if (((reg >> gate->bit_idx) & 1) == 1) return 1; return 0;