From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id C2872487 for ; Fri, 24 Jul 2015 04:40:06 +0000 (UTC) Received: from mail-qg0-f43.google.com (mail-qg0-f43.google.com [209.85.192.43]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id EF6F6176 for ; Fri, 24 Jul 2015 04:40:05 +0000 (UTC) Received: by qgii95 with SMTP id i95so6027120qgi.2 for ; Thu, 23 Jul 2015 21:40:05 -0700 (PDT) MIME-Version: 1.0 Sender: kyungmin78@gmail.com In-Reply-To: References: <20150723105726.GC30929@amd> <20150723121441.GB29747@amd> Date: Fri, 24 Jul 2015 13:40:05 +0900 Message-ID: From: Kyungmin Park To: Krzysztof Kozlowski Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Cc: HeungJun Kim , Bjorn Andersson , John Stultz , "ksummit-discuss@lists.linuxfoundation.org" , Pavel Machek Subject: Re: [Ksummit-discuss] [CORE TOPIC] Mainline kernel on a cellphone List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Jul 23, 2015 at 10:23 PM, Krzysztof Kozlowski wrote: > 2015-07-23 21:14 GMT+09:00 Pavel Machek : >> On Thu 2015-07-23 13:21:19, Linus Walleij wrote: >>> On Thu, Jul 23, 2015 at 12:57 PM, Pavel Machek wrote: >>> >>> > Significant percentage of phones run Linux kernel today, but geting >>> > mainline kernel to work on a phone is very hard to do. (So hard, that >>> > newest device that is close to working on recent mainline was made in >>> > 2009.) There are multiple obstacles, including huge patches from >>> > silicon vendors, missing GNU/Linux userspace support that makes kerne= l >>> > testing hard, interfaces unsuitable for phones and power management >>> > problems. >>> > >>> > Interested people: >>> > >>> > Sebastian Reichel >>> > Pali Roh=C3=A1r >>> >>> I'm adding Bj=C3=B6rn Andersson to thi= s list. >>> >>> Bj=C3=B6rn has as of yesterday booted a mainline kernel on the SONY >>> Xperia Z3 and his company has demonstrated strong interest in >>> getting the mainline kernel to run on their handsets. >>> https://plus.google.com/102276447148493441479/posts/amRvpE8piSw >> >> Yes. Plus, there seems to be group at Samsung. Trats is a cellphone iirc= . >> >> http://lists.infradead.org/pipermail/linux-arm-kernel/2011-December/0784= 28.html >> >> Signed-off-by: HeungJun, Kim >> Signed-off-by: Kyungmin Park Already Krzysztof mentioned. Our team tried to support mainline kernel for product and it's still on-going. see gear 2 support with exysno3250. I'm interested in this topic. Moreover KS is held at Korea. so It's good chance to attend and discuss this topic. Thank you, Kyungmin Park > > Interesting topic also for me. We were (and still are) spending > significant effort so Trats (~Galaxy S 2 for Tizen) and Trats2 devices > (Galaxy S III released for Tizen) would be fully supported by > mainline. The same we did more recently for Gear 2 smartwatch. > Although it is not a cellphone but fits to a mobile device category. > > Standard Debian works fine on them. With a mobile operating system - > like Tizen - it gets more difficult. > > Most of the drivers are there but few important SoC components are > missing (for example camera for Gear 2). One of the obstacles here was > lack of public firmware which prevented mainlining some of the drivers > (e.g. FIMC - the camera). > > Best regards, > Krzysztof > _______________________________________________ > Ksummit-discuss mailing list > Ksummit-discuss@lists.linuxfoundation.org > https://lists.linuxfoundation.org/mailman/listinfo/ksummit-discuss