Date: Wed, 31 Oct 2012 12:35:28 -0700 From: Bakul Shah <bakul@bitblocks.com> To: Tim Kientzle <tim@kientzle.com> Cc: "freebsd-arm@freebsd.org" <freebsd-arm@freebsd.org>, Alie Tan <alie@affle.com> Subject: Re: BeagleBone questions (was Re: Towards an ARM system-building script) Message-ID: <20121031193528.387C3B827@mail.bitblocks.com> In-Reply-To: Your message of "Tue, 30 Oct 2012 23:01:12 PDT." <E0E2DB38-0F51-4E9E-822B-F03022676FD1@kientzle.com> References: <CANuCnH-Y_Bixer7s5EEU4sJVjRC7s3QQbpJeevdXTpxS2K0OqA@mail.gmail.com> <2E208EEB-B2CF-4AC6-B420-03FB4CF08041@freebsd.org> <1351522908.1123.356.camel@revolution.hippie.lan> <CANuCnH9KcRvp2yKeKg6Tp%2Ba2tZLc7RdhRzQiQ9C2VDcHZwAEEg@mail.gmail.com> <CAJ-VmokQmJbr0P4xp9PHHXC5_q0Fte18atvQu28QX%2B2oZiYmrw@mail.gmail.com> <1351550400.1123.364.camel@revolution.hippie.lan> <CANuCnH_Dc1XWUmhHmmpOHTGy%2Bjh5AjuVrOzVKE-QA=3zjfTDRA@mail.gmail.com> <CAJ-Vmom3oPr_e4BrR6-qV0bwLL9S39RJo-hUxo3XYfni71dn8g@mail.gmail.com> <CAJ-Vmont=W5fsF_rw0VBQ1V9Ki0GzXtmmaJUgfPbQWUTHbrOXA@mail.gmail.com> <E0E2DB38-0F51-4E9E-822B-F03022676FD1@kientzle.com>
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On Tue, 30 Oct 2012 23:01:12 PDT Tim Kientzle <tim@kientzle.com> wrote: > > On Oct 30, 2012, at 9:20 AM, Adrian Chadd wrote: > > > .. ah. armv5 has no sleep "halt" function, so it's just spinning. > > Chances are that's a good candidate for why things are running too > > warm. > > RaspberryPi uses a Broadcom BCM2835 with an ARM1176JZF-S core (ARMv6). > > BeagleBone uses a TI Sitara AM3358 with an ARM Cortex-A8 core (ARMv7). See http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.faqs/ka13332.html The method outlined here puts Rpi in low power standby mode, waiting for an interrupt to wake it up. Haven't measured actual power us in this mode.
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