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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B9D0C433EF for ; Wed, 20 Oct 2021 17:53:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 13A4B61130 for ; Wed, 20 Oct 2021 17:53:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229941AbhJTRzR (ORCPT ); Wed, 20 Oct 2021 13:55:17 -0400 Received: from 49-237-179-185.static.tentacle.fi ([185.179.237.49]:56704 "EHLO bitmer.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230073AbhJTRzR (ORCPT ); Wed, 20 Oct 2021 13:55:17 -0400 Received: from 88-114-184-125.elisa-laajakaista.fi ([88.114.184.125] helo=[192.168.1.42]) by bitmer.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.89) (envelope-from ) id 1mdFlt-0002id-3o; Wed, 20 Oct 2021 20:53:01 +0300 Subject: Re: Regression with e428e250fde6 on BeagleBoard Rev C2 To: Tony Lindgren Cc: linux-omap@vger.kernel.org, Laurent Pinchart References: <3f6924a7-1934-b94e-2441-4781fe737f32@bitmer.com> <5de5382b-9f11-c99b-5b9b-c90ae023e10b@bitmer.com> From: Jarkko Nikula Message-ID: <2e85559a-52fe-f887-51b5-4e7505ebda1e@bitmer.com> Date: Wed, 20 Oct 2021 20:52:56 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.14.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org Hi On 9/21/21 10:00 AM, Tony Lindgren wrote: > * Jarkko Nikula [210920 16:35]: >> On 9/20/21 4:34 PM, Tony Lindgren wrote: >>> The patch below should take us back to the earlier configuration, >>> can you please give it a try? >>> >> I double checked and unfortunate it doesn't boot at all or give any >> output when patch is applied: > > Hmm I tested it with copying the beagle timer configuration to omap3.dtsi > and things worked for me. If you can, please try adding > CONFIG_SERIAL_EARLYCON=y and then also add "debug earlyprintk" to kernel > command line. It might show something that I'm not able to reproduce. > Maybe there is a bootloader dependency or something like that. > As discussed offline recently I triple checked your first patch in this thread on top of v5.15-rc6 and using omap2plus_defconfig (has CONFIG_SERIAL_EARLYCON=y) and still I'm not able to get any output with earlyprintk. My kernel command line included "console=ttyO2,115200n8 debug earlyprintk=ttyO2,115200n8". Plain v5.15-rc6 boots. Could it be possible the "secure_32k_fck" clock has some system hanging issue on my beagle? How I understand from e428e250fde6 ("ARM: dts: Configure system timers for omap3") that "secure_32k_fck" is not referenced explicitly but your patch here does. Jarkko