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=-2.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 940DFC433E0 for ; Fri, 8 Jan 2021 13:46:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 59D8A239FF for ; Fri, 8 Jan 2021 13:46:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727811AbhAHNqi (ORCPT ); Fri, 8 Jan 2021 08:46:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48146 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727130AbhAHNqg (ORCPT ); Fri, 8 Jan 2021 08:46:36 -0500 Received: from mail-il1-x12e.google.com (mail-il1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9373BC0612F4; Fri, 8 Jan 2021 05:45:56 -0800 (PST) Received: by mail-il1-x12e.google.com with SMTP id u12so10275285ilv.3; Fri, 08 Jan 2021 05:45:56 -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=cKHeUR1zK43NQMUQKMTc/nRz+XRhb8es7I3o2+Po5OM=; b=QUE6Q4+lt/2IpN5/4MWXoP7r0zJ6gpUbj1DYEZl5QziVOJF8mGuSPZ4J+rL14IiCDW 5m78yFYf0V/P5spwFvv2o9vWhc8AVD/UXQQNy4yaR50rIwb87ufnDX6VsgU1SwDX17xo F6MFJBs+ENedFrk3eZMLEzRT6yAlvdM0BhRN/cn75uGqyWtoXsOcuZff7G/4I7OXoPzt DxQ4L9VUR8B2dmmuKGGX6Z/ZijmawRDUESWOR+dT4DnAcv+q8YL5P+oZYErPsHAP/Pe/ pNN28cP7WYRNIgrSQtWwtgbjOc0q8QqiGsXZFNG4v3POd+VlM9L0mLIoFR7GiLQLUhy2 bPSg== 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=cKHeUR1zK43NQMUQKMTc/nRz+XRhb8es7I3o2+Po5OM=; b=n8Q/41A0FWZDscct4DFtarxeZ1yiU/cZTQKGU8Lko4jI7u+ENVFijdcIaQ/HuhA+Cj CCfJ6j8jlwHU7mTkG4VIPMMz5SsobJQph1bEfknYb94ELhHyyVRWn1Yd9YAvs+Uw9Tfv 9guOabVQ7wWxzQpBTnBkGp+6UGXGVrim4EPGUkjPy0jcbxROkSF4JEBsw3zdLKaxASCX 42b3BU+4ynQ6bW1ik/Z9PD3hpfprHXQ+UvFaLOdEyj3Mbxuw3/BydQijC1OjBIa+eNpm sEdzj7H1W+HsvNcySM31U5cTHFdeP4hoYz7Afu2exUgUzS803hiOZ7WHgrNkV/d1U7f2 w77A== X-Gm-Message-State: AOAM533XUXx0h8Mm6tkm+/7M61JZWxsJugoMPdhxHqydZ+CLz2yMSGQf 80H37zePRwtlVfgAq0lJNTNaesDmO27eh4zfeGM= X-Google-Smtp-Source: ABdhPJxCDlsxvVBHcnRxKe76pie+vUEs4FqREROSJT+0vN+DUoNM18G/O5julpRlaHGXvzKU3rmH0/vttv0j61jeuFw= X-Received: by 2002:a92:c561:: with SMTP id b1mr3896749ilj.65.1610113555882; Fri, 08 Jan 2021 05:45:55 -0800 (PST) MIME-Version: 1.0 References: <20201230084338.19410-1-tony@atomide.com> <7C9106E0-FC75-4056-AD5F-16CCFA9C24E5@goldelico.com> In-Reply-To: From: Adam Ford Date: Fri, 8 Jan 2021 07:45:44 -0600 Message-ID: Subject: Re: [PATCH 1/3] thermal: ti-soc-thermal: Fix stuck sensor with continuous mode for 4430 To: Tony Lindgren Cc: "H. Nikolaus Schaller" , Amit Kucheria , Daniel Lezcano , Zhang Rui , Eduardo Valentin , Keerthy , linux-pm@vger.kernel.org, Linux Kernel Mailing List , Linux-OMAP , Carl Philipp Klemm , Merlijn Wajer , Pavel Machek , Peter Ujfalusi , Sebastian Reichel , Andreas Kemnade Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 8, 2021 at 1:22 AM Tony Lindgren wrote: > > * H. Nikolaus Schaller [201230 13:29]: > > > Am 30.12.2020 um 13:55 schrieb Adam Ford : > > > On Wed, Dec 30, 2020 at 2:43 AM Tony Lindgren wrote: > > >> > > >> At least for 4430, trying to use the single conversion mode eventually > > >> hangs the thermal sensor. This can be quite easily seen with errors: > > >> > > >> thermal thermal_zone0: failed to read out thermal zone (-5) > ... > > > > I don't have an OMAP4, but if you want, I can test a DM3730. > > > > Indeed I remember a similar discussion from the DM3730 [1]. temp values were > > always those from the last measurement. E.g. the first one was done > > during (cold) boot and the first request after 10 minutes did show a > > quite cold system... The next one did show a hot system independent > > of what had been between (suspend or high activity). > > > > It seems as if it was even reproducible with a very old kernel on a BeagleBoard. > > So it is quite fundamental. > > > > We tried to fix it but did not come to a solution [2]. So we opened an issue > > in our tracker [3] and decided to stay with continuous conversion although this > > raises idle mode processor load. > > Hmm so maybe eocz high always times out in single mode since it also > triggers at least on dra7? > > Yes it would be great if you guys can the $subject patch a try at > least on your omap36xx and omap5 boards and see if you see eocz > time out warnings in dmesg. I should be able to try it on the dm3730 logicpd-torpedo kit this weekend. adam > > Regards, > > Tony