From mboxrd@z Thu Jan 1 00:00:00 1970 From: Amit Kucheria Subject: Few enhancement ideas Date: Wed, 13 Jul 2005 20:52:55 +0300 Message-ID: <1121277175.6338.105.camel@localhost> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============67122976026261516==" Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-pm-bounces@lists.osdl.org Errors-To: linux-pm-bounces@lists.osdl.org To: linux-pm@lists.osdl.org Cc: Igor Stoppa , Sampsa Fabritius List-Id: linux-pm@vger.kernel.org --===============67122976026261516== Content-Type: text/plain Content-Transfer-Encoding: 7bit Hi, Being our first post to this list, I would like to introduce ourselves as part of the team behind the Nokia 770 (www.nokia.com/770). We have been preoccupied with the product launch, but now we will be able to participate, starting with the Ottawa Linux Symposium. Team contributions ================== The Nokia 770 Linux team has made many contributions to the Linux-OMAP port, some of the PM-specific ones being: - Dynamic tick patch by Tony Lindgren (http://www.muru.com/linux/dyntick/): Initially for the OMAP architecture followed by the recent x86 port - Clock framework for the OMAP architecture - Thanks to Tuukka Tikkanen - PM-enabling various drivers in the mach-omap tree The Product =========== Nokia 770 is powered by an OMAP1710 on a custom board. The device will ship with a 1500mAh battery which will give a continuous browsing use-time (WLAN or Bluetooth) of 3hrs. The device needed to be instant-ON, so we have used run-time power management. This gives us an official 'standby-time' of 7 days. All the drivers make extensive use of the clock framework and release clocks when peripheral is not in use. Interests ========= Here are a few ideas that we are planning to investigate in order to address shortcomings in the current PM model with respect to system-wide PM: - Regulator framework: similar to clock framework HAL - Generic framework for system-wide constraints: to handle constraints outside bus control - PM framework: Enhance PM framework to allow flexible policy control. Like DPM? - User space API: Requires study Are these ideas of interest to the PM community or Nokia-specific? Contacts ======== We will be in Ottawa 16.07.05 - 24.07.05. It would be nice to meet others on this list to discuss these ideas further. Have a good day. Regards, Amit -- Amit Kucheria Nokia --===============67122976026261516== Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Disposition: inline --===============67122976026261516==--