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=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 7622DC04EB9 for ; Mon, 3 Dec 2018 11:42:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 34B1820834 for ; Mon, 3 Dec 2018 11:42:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="LcuIxjvR" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 34B1820834 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=gmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726365AbeLCLnH (ORCPT ); Mon, 3 Dec 2018 06:43:07 -0500 Received: from mail-ot1-f67.google.com ([209.85.210.67]:46537 "EHLO mail-ot1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726174AbeLCLnG (ORCPT ); Mon, 3 Dec 2018 06:43:06 -0500 Received: by mail-ot1-f67.google.com with SMTP id w25so11219052otm.13 for ; Mon, 03 Dec 2018 03:42:25 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=2WtzCc7AgTuIPm8d6x2VuZKjqnIwdGuXPFknWJoEers=; b=LcuIxjvRUiqwQejzTumi5yXTkKjn+SksN8B4AgCCeBMiUOc+U19co/6Ay0Hfvw/zt3 EgdwtwK7YqeyV0EUsHWR8/0SBxXZ0bWwU2PdGyk363v2stDcLK9F1L9L63SsZW5bE0j/ 8ftxhHJIAfRMGD+qGDkU9rYCbZOe+rWkzB9nWoMf1RnAbztROX54i58pijc224UFCwjV nbj0TELbuSeer0UW7Rb23BYY0zGp0v2PT77w1G7zkK43f1PY+kpPitRRDYJQ6DJPRyFN 8ev5sdgy0NB2XVseytyZBAytGBFL3XRc7J+3lxTDOiCvu7hX8Mxd9leEEoaArmrmHv/6 Hzlg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=2WtzCc7AgTuIPm8d6x2VuZKjqnIwdGuXPFknWJoEers=; b=tChgecfmL7wOjr+FGW0mBD9x9X6QemhELnecU/SenYsJNhFIq6CxSJ5Y7HFVNoOrhS d6XFZhwd7zDR6oRA0mgGJDmM7QDbzMqiDPWBfHVjxRVq9E8+ygnFFXOgkTsu1Mw5LQo9 huQTravpgkjmmoVYDjPlHU4Lb1Qdo98XEAzMkZvwNSAn16iIGg4EGu0mmEt0un56wjOg iQ/K2oIa3tZ04tHRkLlX8q16L42VJaJJFExW1AGqWAGAvOkwWgARk5mnSscDwD6b4p+i jJZqgwz4QbyTBw4JC7+ZPiEvrmeA+etMpBbBpuXUrB7U+WCQ8orzSBJEimbXHJm6yjIA WQVQ== X-Gm-Message-State: AA+aEWYm52ieA6jbAcqFL1i7o84HCyfs6ksLo907R68ktMVk/M5iSgII V5FCSTLPX/uQUG1oK+8xnqn72T18lhvwz5L9sN4= X-Google-Smtp-Source: AFSGD/UySL6cSKHhgQYnEHIwvmq+CKebPJXBJgM2FHMsaUvpc6PmX8oQLlm0qci7cezPGVd1EOd+3U9tqTf8gWmGKRQ= X-Received: by 2002:a9d:7285:: with SMTP id t5mr10360972otj.228.1543837344547; Mon, 03 Dec 2018 03:42:24 -0800 (PST) MIME-Version: 1.0 References: <1543804767-17650-1-git-send-email-Anson.Huang@nxp.com> In-Reply-To: <1543804767-17650-1-git-send-email-Anson.Huang@nxp.com> From: Fabio Estevam Date: Mon, 3 Dec 2018 09:42:26 -0200 Message-ID: Subject: Re: [PATCH] ARM: imx: update the cpu power up timing setting To: Yongcai Huang Cc: Shawn Guo , Sascha Hauer , Sascha Hauer , Fabio Estevam , Russell King - ARM Linux , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , linux-kernel , NXP Linux Team Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Dec 3, 2018 at 12:45 AM Anson Huang wrote: > > The sw2iso count should cover ARM LDO ramp-up time, > the MAX ARM LDO ramp-up time may be up to more than > 100us on some boards, this patch sets sw2iso to 0xf > (~384us) which is the reset value, and it is much > more safe to cover different boards, since we have > observed that some customer boards failed with current > setting of 0x2. > > Fixes: 05136f0897b5 ("ARM: imx: support arm power off in cpuidle for i.mx6sx") > Signed-off-by: Anson Huang Reviewed-by: Fabio Estevam