Received: by 2002:a25:c593:0:0:0:0:0 with SMTP id v141csp1986402ybe; Sat, 7 Sep 2019 06:48:14 -0700 (PDT) X-Google-Smtp-Source: APXvYqz1QmJk91QxvesI8OHF4L0syZIH8ZnKMuOU4zDkyum8l1bnEaPVmRGQ9/VUgmjnBGIBZOLl X-Received: by 2002:aa7:9190:: with SMTP id x16mr17162917pfa.132.1567864094040; Sat, 07 Sep 2019 06:48:14 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1567864094; cv=none; d=google.com; s=arc-20160816; b=sAmouOcrTG7o/UKxbBtKQ+roZRH+9ZRqgeh8jbLbk3sOJDgS3a6s1jNjuOreLRPwMV nLkrEqv34TtxiqUxRG2EuamjUKt9RU1O3f/yARzahf+RrHgIXAS9QQQAumU3ZoR650PK x3IILZ/N6ug0OQHWdcOOdDETkxNIsPBa8auzKNWGwrp/rVrAJ5siQGrJqolpIUPOWfnw hP5t/ViHz9MFaCW/Oh6RaPKPRdgy3Waqbc2XXPx1kfW8fMJS8cesH3N8OVfrjZa4uyd8 NkIZdsNQK5zX7lPdK7ndbDCr52MjTDSGWpxPe7REGGdA/aCLJ8jrnc9QaY7TtOaiABKo 9ccQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:user-agent:subject:cc :from:to:references:in-reply-to:content-transfer-encoding :mime-version:dkim-signature; bh=MqN/EtBkVnxG8eZiColGzmDCTwXUPyPh5+LpIVe0YG4=; b=La7aXHNwZVIB1J+eS8OgHNg+kHPJmD4mMjq5BS+nRVSta7Zm+lEEdfXK6E7e3udYdA Eqgc4y9FQEHso6SzNjK62bHFGuCXPl6a1G2UK0ypNleFq4ikXemaHrGS0CUmaK8LVgr1 WCQj4CWl9MDo2BWdbwzkfJYX+SJMznfD/AYGUbWeVRnLd8qT63qMlU5Y+szuWfmL29W0 80Wnvp/XDoZZT5DY57JJNtR1gkbhoVa/dOfWmUQ+56eTIuEbVQre6oiC1ndj8dpiz2y9 B8W1s4meZEqNBYgG2Tf2ggHnuf+IameBaVkehaWA3eLYYpO0boySvgJZL1TzcE9X1yER KH7g== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=CYozECqV; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id i12si8638244pfo.126.2019.09.07.06.47.58; Sat, 07 Sep 2019 06:48:14 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=default header.b=CYozECqV; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406047AbfIFRUp (ORCPT + 99 others); Fri, 6 Sep 2019 13:20:45 -0400 Received: from mail.kernel.org ([198.145.29.99]:35152 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729928AbfIFRUp (ORCPT ); Fri, 6 Sep 2019 13:20:45 -0400 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= Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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 Cc: "kernel@pengutronix.de" , dl-linux-imx , Anson Huang , Jacky Bai , Abel Vesa , "linux-clk@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" , Peng Fan 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> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Quoting Peng Fan (2019-08-27 01:17:50) > From: Peng Fan >=20 > 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. >=20 > The software workaround is to write twice to enable the LPCG clock > output. >=20 > Signed-off-by: Peng Fan Does this need a Fixes tag?