From owner-freebsd-arm@FreeBSD.ORG Thu Apr 10 03:06:17 2014 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 0B23983B; Thu, 10 Apr 2014 03:06:17 +0000 (UTC) Received: from mail-ee0-x235.google.com (mail-ee0-x235.google.com [IPv6:2a00:1450:4013:c00::235]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 690771624; Thu, 10 Apr 2014 03:06:16 +0000 (UTC) Received: by mail-ee0-f53.google.com with SMTP id b57so2443257eek.26 for ; Wed, 09 Apr 2014 20:06:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; bh=FLsUfaDiACULGueYWTYYN9fNUn/HRh6U9FuCPUxYa1w=; b=hqUI0KFFapD1FFEDJeijqOJ8PZD4bTfLyNx9gJmVoMcHznl6+zhRdil3DA71oB5Avg 1/UqUxEkErEDljoQ7TjdrFJToyrxgUxXiSD2+QLtYd1fBzHjpx0ipfh9fU5sXtK/NlbF SJYyodNyBe5A72YO4JIvu1hUg1BSXm8sRY+gV0Cvr8SHRxlU2lKjlwtIo9uhNYbsjlfA QG/HaG9hqA6kV78F/RzfJQJF+fWmaZ3fyWAISEHRSWxDbvjibxWBRMutyjtxY7yncrUC rDzsptnq3tqJbgM0LQ315RihiCGUMD7I2SylwQvYiEq5VN1kytBM3tN0Gw8MRkebyMg2 YxJw== X-Received: by 10.15.43.77 with SMTP id w53mr17008335eev.10.1397099174644; Wed, 09 Apr 2014 20:06:14 -0700 (PDT) Received: from ketas-laptop.mydomain (ketas-laptop6.si.pri.ee. [2001:ad0:91f:0:21a:6bff:fe66:2ad3]) by mx.google.com with ESMTPSA id q41sm6535956eez.7.2014.04.09.20.05.20 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 09 Apr 2014 20:06:13 -0700 (PDT) Sender: Sulev-Madis Silber Message-ID: <53460A6A.5080502@hot.ee> Date: Thu, 10 Apr 2014 06:05:14 +0300 From: "Sulev-Madis Silber (ketas)" User-Agent: Mozilla/5.0 (X11; FreeBSD i386; rv:15.0) Gecko/20120912 Thunderbird/15.0.1 MIME-Version: 1.0 To: Ian Lepore Subject: Re: BeagleBone Black: Increase CPU frequency from 800MHz to 1GHz References: <533CA68E.1020602@gmail.com> <1396487123.81853.274.camel@revolution.hippie.lan> In-Reply-To: <1396487123.81853.274.camel@revolution.hippie.lan> X-TagToolbar-Keys: D20140410060514305 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Cc: freebsd-arm@FreeBSD.org, Xuebing Wang X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.17 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 10 Apr 2014 03:06:17 -0000 On 2014-04-03 04:05, Ian Lepore wrote: > On Thu, 2014-04-03 at 08:08 +0800, Xuebing Wang wrote: >> Hi community, >> >> I am working on a small project to increase AM335x Cortex-A8 MPU >> frequency from 800MHz to 1GHz. >> >> Would you please point to me which tree should I base my work on? Is it >> current? >> >> I did notice that there is "projects/armv6", svn log under sys/arm/ti >> shows the latest commit is "2012-08-15" >> > > Definitely use -current. That projects branch was where the initial > armv6 work was done long ago, but that was all merged to 10 and has now > evolved into 11-current. > > I think very many Beaglebone users will be interested in your work, > including me! > > -- Ian I worry that I might need heatsink on SoC when running 1GHz... I hope this thing has proper thermal downscaling or other means of protection. At 500MHz and under load, it's already too warm... the thing was sitting on table with SoC side up. The original idea of running it inside enclosed box doesn't seem so good anymore...