PSB C0 HW Support ================= We're still waiting for C0 HW. We were able to borrow a few cycles on another team's C0 platform to test our basic enabling patches. We needed a slight modification to the HD Audio patch to (see http://www.moblin.org/repos/?p=projects/kernel-mid.git;a=commitdiff;h=a1 cac708cdd1220165d35cd7eac8d8c5a4e4b4be) work around silicon issue that will be fixed in the next stepping. There are reports that our SDIO patches may have some issues on C0 HW and we will need to confirm and fix when we receive the new HW. We're also planning to do more power and performance analysis/tuning on C0 HW.
SDIO ==== Moblin kernel now contains patches for both Pierre Ossman's and MSS SDIO stacks. Pierre's new SDIO stack has been accepted into the upstream 2.6.24 development kernel and includes a couple of fixes from us. Our patch is slightly behind with Pierre's latest code and plan to re-sync in the coming week. We've also ported & include Marvell's GPL'd sd8686 driver for both SDIO stacks. We're carrying the MSS stack for now to limit disruptions, but now that Pierre's code is in the 2.6.24 kernel MSS support will be limited. MSS will be dropped from our tree in the short-term. Dabney Thermal patches ====================== The Alpha release of the Dabney Thermal patches have been applied to the Moblin kernel just this week. We've only just now received the test cases to verify that the functionality behaves as expected to finish out the integration. Once we've ran the test cases we'll be able to complete the integration. The older versions of these patches have been removed USB Client Drivers ================== We're still waiting for the C0 release of the USB Client drivers. At which we will integrate it into the Moblin kernel. PSB Gfx & Video Drivers ======================= We've integrated the Beta1 release of the PSB Gfx 2-D X and kernel (psb.ko & drm.ko) drivers on moblin.org. One issue we're still trying to resolve is that PSB Gfx driver requires EXA 2.2 where as Gutsy is on 2.1. There is a patch to move to 2.2 that we still need to apply on Moblin.org. Power and Performance Testing/Optimization ========================================== We've been doing some basic power and performance benchmarking to find out our trouble spots. PowerTOP is showing over 140 interrupts/second for several kernel drivers. This is our biggest issue at the moment preventing the processor from taking advantage of deeper C states and consuming less power. By process of elimination we tracked the issue down to the PSB Gfx kernel driver (psb.ko). The other issue that PowerTOP is showing is when hyperthreading and/or the Local APIC Timer is enabled, an external interrupt is being generated 60+ times a seconds. When we get the C0 HW we will try to debug and root cause this issue. +=+=+ Rob Rhoads mailto:[EMAIL PROTECTED] Software Architect Open Source Technology Center Office: 503-712-6675 Software Solutions Group mobile: 971-533-2451 Intel Corporation Hillsboro, Oregon USA -- Ubuntu-mobile mailing list Ubuntu-mobile@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-mobile
