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 aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9E406C433EF for ; Wed, 12 Jan 2022 21:45:21 +0000 (UTC) Received: from mail.savoirfairelinux.com (mail.savoirfairelinux.com [208.88.110.44]) by mx.groups.io with SMTP id smtpd.web08.69.1642023920485857149 for ; Wed, 12 Jan 2022 13:45:21 -0800 Authentication-Results: mx.groups.io; dkim=missing; spf=pass (domain: savoirfairelinux.com, ip: 208.88.110.44, mailfrom: jerome.oufella@savoirfairelinux.com) Received: from localhost (localhost [127.0.0.1]) by mail.savoirfairelinux.com (Postfix) with ESMTP id 5BCB59C0307; Wed, 12 Jan 2022 16:45:18 -0500 (EST) Received: from mail.savoirfairelinux.com ([127.0.0.1]) by localhost (mail.savoirfairelinux.com [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id EoIv07W-OjUM; Wed, 12 Jan 2022 16:45:18 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by mail.savoirfairelinux.com (Postfix) with ESMTP id 0A67F9C0308; Wed, 12 Jan 2022 16:45:18 -0500 (EST) X-Virus-Scanned: amavisd-new at mail.savoirfairelinux.com Received: from mail.savoirfairelinux.com ([127.0.0.1]) by localhost (mail.savoirfairelinux.com [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id 4JInJPmEpzLQ; Wed, 12 Jan 2022 16:45:17 -0500 (EST) Received: from mail.savoirfairelinux.com (mail.savoirfairelinux.com [192.168.48.237]) by mail.savoirfairelinux.com (Postfix) with ESMTP id E17E59C0307; Wed, 12 Jan 2022 16:45:17 -0500 (EST) Date: Wed, 12 Jan 2022 16:45:17 -0500 (EST) From: Jerome Oufella To: Jean-Philippe Lebel Cc: yocto@lists.yoctoproject.org Message-ID: <847433617.77075.1642023917723.JavaMail.zimbra@savoirfairelinux.com> In-Reply-To: References: Subject: Re: [yocto] [meta-raspberrypi] Problem with RPI_USE_U_BOOT with RaspberryPi4 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Mailer: Zimbra 8.8.15_GA_4180 (ZimbraWebClient - GC97 (Mac)/8.8.15_GA_4177) Thread-Topic: Problem with RPI_USE_U_BOOT with RaspberryPi4 Thread-Index: 68KGNAmchOUkzHUE9HtV4hOYd5Yvwg== List-Id: X-Webhook-Received: from li982-79.members.linode.com [45.33.32.79] by aws-us-west-2-korg-lkml-1.web.codeaurora.org with HTTPS for ; Wed, 12 Jan 2022 21:45:21 -0000 X-Groupsio-URL: https://lists.yoctoproject.org/g/yocto/message/55820 On Jan 12, 2022, at 3:37 PM, Jean-Philippe Lebel wrote: > For a reason I can't quite understand, everything stated working when I added > ENABLE_UART = "1" > > Does anyone understand the relation between ENABLE_UART = "1" and RPI_USE_U_BOOT > = "1" ? > > Thanks > > ------------- > Jean-Philippe The documentation mentions a relationship between enable_uart and (lower) core frequency on some hardware variants - could there be a side-effect (if yes, maybe gpu_freq/arm_freq could play a factor) ? Jerome