From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f53.google.com (mail-lf1-f53.google.com [209.85.167.53]) by mx.groups.io with SMTP id smtpd.web12.10743.1614256361710713193 for ; Thu, 25 Feb 2021 04:32:42 -0800 Authentication-Results: mx.groups.io; dkim=pass header.i=@gmail.com header.s=20161025 header.b=u6Efijo2; spf=pass (domain: gmail.com, ip: 209.85.167.53, mailfrom: andrey.z@gmail.com) Received: by mail-lf1-f53.google.com with SMTP id d24so8290611lfs.8 for ; Thu, 25 Feb 2021 04:32:41 -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:content-transfer-encoding; bh=+me5iamOVBnykuGbt09dkEQDnah/gz+Diejh5BVDBcU=; b=u6Efijo2GmWlUd6hPisLMLd1rSWrCqK+5beA+AdIh/pHn5QlbKD88TpWEQ+6WbBg7j Kakeb35AdnYRp2NMYNBD39bBfukS4wHLM63iEZoAwE4W/YQHvorXRTF+jP0xQ8CoNUcR 3IKhrk/Eug1mZTuvqwwAIH+DmWlHgR6OcLCqg99HpgsFdApi9L0uecBdL5Ri4Ek3hfwP 4hfdjgmjHY+qQUTYvDB6bf4yEdtLds5/E+Xwz6qJz5qS/gmCo8OolE4NEWJXzVyn2Gbh eyIyPappFVN6rAiixcW/yQb/f96olHT50T/breIouUSBj6qs7oJgjUwHXeDEC6EoufqG 9w3A== 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:content-transfer-encoding; bh=+me5iamOVBnykuGbt09dkEQDnah/gz+Diejh5BVDBcU=; b=BRiBWFOBNd+fivf7/nDTXCkkawb5mmM/j2wWKks2zqMe9W2rGYePcbWY/a3FhnfCPe FAA8FgMZMOFlTsQ1TcdQWRKUXdF3jNi3p+smszQcOuWL2gf+cRJcyr73uxhXqFcNZbis lqoztDpO6NUSf6c7a9Y27qxaS10WuXBfoBdg7WcpVTtCY9XEvwGsCegNOlguBJYbd3wy /2MNOIaCQaL+oFBVgOvOpF5wm9ZMq++GcVT7ut5lYWvIeeKg7GBhyEVwvLd4NFsH+mFi zV3OIRR5iPFXPuQI7WgCVGNp3bnlXxbxhSYn1z0DNq5cVhi/nR8cyMg22volBz4s6Cjs aSeQ== X-Gm-Message-State: AOAM531oKleIJtCpipjgqneLOEHaUOdCxbSTSR+JOQY00ulRIs46r0in Als5kaqmsJpngx7M3M4tIqXFI1D/y2RIzsJI7hM= X-Google-Smtp-Source: ABdhPJyxA3CKIV1CvsnwxWUlIbzykAOFM/VBs9VcloSJ2BvhbTlqpWmuUd5p+2Co1b7rQmcxlW2RG89qHR6+bXjE9mk= X-Received: by 2002:ac2:58c4:: with SMTP id u4mr1919011lfo.138.1614256359769; Thu, 25 Feb 2021 04:32:39 -0800 (PST) MIME-Version: 1.0 References: <12bb83d9-625a-f967-ed15-9602fc4cd46b@faresoftware.it> <910eca81-bcb4-c4b2-d591-9a853026f184@beam.ltd.uk> <9d621536-e38e-c8ee-4d5e-dc3f24fb09f1@beam.ltd.uk> <30d6ff10b73bd117198a8e2dd3e47388@basmevissen.nl> In-Reply-To: <30d6ff10b73bd117198a8e2dd3e47388@basmevissen.nl> From: "Andrey Zhizhikin" Date: Thu, 25 Feb 2021 13:32:28 +0100 Message-ID: Subject: Re: [meta-freescale] imx6dl dunfell and kernel: linux-fslc or linux-fslc-imx? To: Bas Mevissen Cc: Otavio Salvador , Terry Barnaby , meta-freescale@lists.yoctoproject.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello Bas, On Thu, Feb 25, 2021 at 1:18 PM Bas Mevissen wrote: > > On 2021-02-25 12:21, Otavio Salvador wrote: > > Em qui., 25 de fev. de 2021 =C3=A0s 06:53, Terry Barnaby > > escreveu: > >> From what I am seeing I will have to use a NXP fsl-* based > >> distribution > >> to support the imx hardware video processing features. I have built > >> such > >> a distro with both linux-fslc-imx and limux-imx kernels (I think!) for > >> the Wandboard, which boots and runs but the HDMI display was not > >> functional. I will persevere looking at that. > > > > No, you don't. You can use linux-fslc (mainline) and fslc-* distros as > > i.MX6 has full mainline support. At O.S. Systems we have been using > > Linux mainline with many customers with great success. > > > > Wouldn't make sense to first evaluate the performance of the platform > (as Terry plans to do) first on an NXP fsl-* distro? In that case one > can get direct support from NXP if required. After that, derive your own > distro from fslc-*. This might not be quite indicative, as the NXP kernel might have some "shortcuts" to boost performance in certain areas, sacrificing conformance of the source code. You might experience the situation that video performs quite well, but then after opting for NXP kernel - you might find that some other areas are not working as expected (some other domains). This would put you in a situation that you've already committed to choose and deploy the NXP-based BSP and would leave you to solve the issues in those domains on your own efforts. This is my pure speculation here, so take it with a grain of salt though. := ) IMHO, this should be considered and before the final product receives commitment to use either of BSP flavors - all areas should be validated, not only the performance aspects of Multimedia domain. > > BTW Would kernel.org stable kernel work as well on i.MX6 if you need > graphics and video? I used it successfully for headless IOT > applications. As Fabio already indicated - this is possible. > > Bas. > -- Regards, Andrey.