From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EFEEC43331 for ; Fri, 6 Sep 2019 17:20:51 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0D14720838 for ; Fri, 6 Sep 2019 17:20:51 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="LZ2ag5Kx"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="CYozECqV" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0D14720838 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:From:To: References:In-Reply-To:MIME-Version:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=q+H+ybiSc3UzbxwTSgF21IfW55k63fJsAc+aogkxb7Y=; b=LZ2ag5KxV80saV twXgHvMsBP3n5031H9eBuqyS7RYk11qWqJ0qO0yHLZJBOhx7ylqYowm/zWds5VegnXgyWPDCduaHi ZzUPdHBLTBzdkYkcfYXpEtNdB/lfhZ1g5dwPD4h4KkzXqpqVzB9/4YeDHz6LUyfyxcFMr8B5Xa1ov s5uZXiufpQD2e/6Kj4i7VwdcSQktpTQCcSZDf6f1+mWui6GwrS4xB72b3FjPpYXOoH59IwJwSdiP0 cfiMyiA5fF3Z1e2QVharcFe+XPAoZTJ0OXXhE7XDi9gCrxpgYmDTKhTZ1UxyL4dAbB2BLr+XjvkhF lvoK5m6LKb+jOeE6MfOQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i6Huh-0007yQ-QZ; Fri, 06 Sep 2019 17:20:47 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i6Huf-0007xG-84 for linux-arm-kernel@lists.infradead.org; Fri, 06 Sep 2019 17:20:46 +0000 Received: from kernel.org (unknown [104.132.0.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id B99FB20838; Fri, 6 Sep 2019 17:20:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1567790444; bh=MqN/EtBkVnxG8eZiColGzmDCTwXUPyPh5+LpIVe0YG4=; h=In-Reply-To:References:To:From:Cc:Subject:Date:From; b=CYozECqVpRrFJH2xvk6dZ4mN6OY4KecJUOzK1vGdSGMnbIKxRA8qh/Kc+LdHjTEx5 PUZXjE89eK7y1b+ifK4UXKqZC6DrG2/yezn1PYX7R3f5S+sw3IiAvYj3lL3oy5GVCa FqYmivqaXH8/EfZQDELvYwg6vU0Xnas34hkqips0= MIME-Version: 1.0 In-Reply-To: <1566936978-28519-1-git-send-email-peng.fan@nxp.com> References: <1566936978-28519-1-git-send-email-peng.fan@nxp.com> To: "festevam@gmail.com" , "mturquette@baylibre.com" , "s.hauer@pengutronix.de" , "shawnguo@kernel.org" , Aisheng Dong , Peng Fan From: Stephen Boyd Subject: Re: [PATCH] clk: imx: lpcg: write twice when writing lpcg regs User-Agent: alot/0.8.1 Date: Fri, 06 Sep 2019 10:20:43 -0700 Message-Id: <20190906172044.B99FB20838@mail.kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190906_102045_305601_9C5503CE X-CRM114-Status: UNSURE ( 7.68 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peng Fan , Abel Vesa , Anson Huang , "linux-kernel@vger.kernel.org" , dl-linux-imx , "kernel@pengutronix.de" , "linux-clk@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , Jacky Bai Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Quoting Peng Fan (2019-08-27 01:17:50) > From: Peng Fan > > There is hardware issue that: > The output clock the LPCG cell will not turn back on as expected, > even though a read of the IPG registers in the LPCG indicates that > the clock should be enabled. > > The software workaround is to write twice to enable the LPCG clock > output. > > Signed-off-by: Peng Fan Does this need a Fixes tag? _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel