== Manjunath GK <manjugk> ==
=== Highlights ===
* Alignment for DT-HWMOD hook at linaro-connect
- Temparory solution to have DT-HWMOD hook is aligned and changes
are tested successfully at linaro-connect
* DT adaptation for OMAP i2c driver
- With DT-HWMOD hook, i2c-omap driver is converted to use DT
* RFC patches posted to mailing lists with DT-HWMOD changes
- Discussion is in progress in the mailing lists
=== Plans ===
* Followup review comments in the mailing lists and align on further
changes/proposals.
* Convert remaining i2c controller and it's child devices to dt model
* Add dt support for panda board
-Manjunath
== Jason Liu <jasnliu> ==
== Highlights ==
* MX53 NAND driver support, done, patches send out to mtd ML
* MX53 EVK NAND support, done, patches send out linux-arm ML, but it
more likely be postponed due to DT support for i.MX
* Linaro i.mx u-boot bug analysis and fix.
== Plan ==
* 11.11 task
* uboot upstream
* kernel upstream
Best Regards,
Jason Liu
== Thomas Abraham <thomas-ab> ==
=== Highlights ===
* Submitted patches to move uart irq handling from platform code to
uart driver for Samsung platforms. This was required to simplify
adding device tree support to uart driver.
* Submitted another proposal for adding device tree support for Exynos
GPIO and PinMux modules. (Most of the Exynos4 drivers perform gpio and
pinmux setup in the probe function by calling a platform specific
callback function listed in the platform data of the driver. So until
the dt support for gpio and pinctrl are finalized, I will continue
adding dt support to drivers utilizing the auxdata feature to populate
the platform data with callback for gpio and pinmux setup).
* Started looking into dt support for dma driver.
=== Plans ===
* Submit dt support patches for dma driver.
=== Misc ===
* Will be on leave on 17th, 18th and 19th August.
=== Device Tree ===
* Repost "alias" support patch to get both flat-tree and prom-tree
supported, so that it will not break SPARC architecture.
* Had seen another two custom pinmux bindings for Tegra and Exynos,
and the common register-value pair binding will probably make less
sense, so will keep purchasing iomuxc binding I have proposed.
* Per request from Freescale Landing team, published a imx51/53 DT
support tree on git.linaro.org, so that they can starting playing
more DT support on drivers.
=== Misc ===
* Posted a patch series to clean up imx (mxc & mxs) mach/gpio.h to
empty headers, and wait for a global removal from asm/gpio.h.
This is one step to single-image.
* Ran a i.mx53 quick start demo on APM (ARM Parter Meeting?)
* Flight back from UK
--
Regards,
Shawn
=== Highlights ===
* Merged basic Origen enablement patch into the linaro+android tree
* Worked with Mathieu Poirier to get familiar with my new Origen board
and managed to get a working defconfig for the Origen board committed to
the linaro+android tree (serial console functionality, only).
* Did a very rough first draft on Kconfig Fragments talk for LPC
* Got Linaro Connect expenses submitted
* Merged a number of RTC fixes from lkml into my dev tree and submitted
them for 3.1
* Did a major rework of the Alarm Timers internal code to address
comments from the Android developers. Submitted some smaller fixes for
3.1 and queued the rest of the rework for 3.2
* Made the omap3, omap4 and origen android defconfigs consistent.
* Merged fixes for beagle xm revC usb bug from 3.1-rc1 (bug #825343).
Big thanks to Jassi for pointing out the fix!
* Updated the Linaro+Android tree, and made the initial pre-release for
11.08
* Worked with Paul Sokolovsky to push the Linaro+Android tree through
gerrit. There are still some kinks to work out, but its getting there.
=== Plans ===
* Lots more focus on Kconfig presentation. I'm likely going to try to
put the boards away and avoid doing anything else.
=== Issues ===
* N/A
== Dave Martin <dmart> ==
=== Activity Summary ===
* Linaro Connect and ARM Partner Meeting consumed much of the last two weeks
* Main output from Linaro Connect was some progress on vexpress
device tree support (with much help from Lorenzo Pieralisi and Grant
Likely). I have a kernel _building_ now, but I still need to test it,
and write the Makefile rules properly.
* Alignment fault fixup mode patches now merged by Russell for the
3.2 window. If these are included in linux-linaro we will be able to
find and resolve outstanding problems by booting with e.g. alignment=5
on the kernel command-line.
* Posted patches to fix multiplatform kernels for Thumb-2 userspace.
This issue can affect any single kernel image which contains both v6
and v7 support, when running Thumb-2 userspace containing VFP
instructions (i.e., Linaro filesystems fail with a torrent of
SIGILLs). Some rework is needed, but no major objections received so
far.
* Posted a suggestion on the binutils list about a more generic way
to save/restore the assembler state during assembly. Some positive
feedback received; I will draft a more detailed proposal for review.
For now it's just an RFC, and I haven't committed to spending real
time on it.
=== Plans ===
* Test new vexpress devicetree patches, rework and post.
* Rework and repost multiplatform Thumb-2 undef handling patches.
* Write up brief advice for Thumb-2 kernel migration.
* Write up detailed proposal for assembler state save/restore.
* Check whether the new kernel trees work in Thumb-2 on mx51evk and
follow up with Freescale landing team.
* Suggest we disable aligment fixups for linaro images, since
gtk-sharp2 is now the only thing known to be affected, once my
alignment fixup patchas have been posted for review.
=== Work Items ===
no status change
=== Absences ===
probable absence of ~3 days around the start of September
=== Highlights ===
* Posted "Remove define CONSISTENT_DMA_SIZE" patch series to
linux-arm-kernel for review. This was part of the 'single zImage' work
done at Linaro Connect in the previous week.
* As part of the work for blueprint "Investigate block allocation in FS"
wrote program to issue writes to SD in various sequences to try and
get a handle on algorithms used by SD cards. (Seems to be not as
simple as we assume.)
* Spent time on tasks in preparation for officially starting work at
Linaro in September.
=== Plans ===
* Modify flash simulation program to match real SD cards performance (or
give up trying to match 'difficult' algorithms.)
* Run flash media use cases with different ext4 options.
(I'm using my new Linaro email address to post this weeks summary to see
if I've managed to subvert GMail's broken handling of mailing lists, see
http://mail.google.com/support/bin/answer.py?answer=6588)
== Linus Walleij linusw ==
=== Highlights ===
* Rebased the gpio.h cleanups from Linaro connect on top of
Russells gpio.h cleanup patchset and mailed it out:
http://marc.info/?l=linux-arm-kernel&m=131297866928334&w=2
* Submitted an update of the DBx500 PRCMU drivers
carved out from the internal ST-Ericsson 3.0-based git:
http://marc.info/?l=linux-kernel&m=131313768415616&w=2
* RealView PB11MPCore, TCM support and TCM fixes
merged for 3.1
http://marc.info/?l=linux-arm-kernel&m=130944303522448&w=2http://marc.info/?l=linux-arm-kernel&m=130944291922298&w=2http://marc.info/?l=linux-arm-kernel&m=130944294622342&w=2
* I now have a working Integrator AP setup, also sent two
patches for it:
http://marc.info/?l=linux-arm-kernel&m=131037711822519&w=2http://marc.info/?l=linux-arm-kernel&m=131189136402449&w=2
First patch merged for v3.1-rc1 through Arnds tree
* DMA40 patches merged for 3.1
http://marc.info/?l=linux-kernel&m=130916853306730&w=2
* Fix to RMI4 staging driver merged for 3.1
http://marc.info/?l=linux-kernel&m=130941558024742&w=2
* Fixed a PL022 bug reported by Russell King, merged for 3.1.
* Reviewed David Browns patches for moving and refactoring
the qualcomm GPIO drivers.
* Various upstreamed patches for AB8500, STMPE, MMCI...
* Reviewed Viresh Kumar's patches to the PL08x DMA
driver.
* Reviewed Samsungs patches to the PL08x DMA driver.
* Discussed pinmux/pinctrl subsystem at Linaro Connect,
not much to say about it, input was that the number space
for each pinmux controller need to be local to the controller
and we should avoid a global numberspace.
=== Plans ===
* New iteration of the pinctrl + pinmux subsystem
* Finalize the gpio.h cleanups
* Drive generalization of U300 and Nomadik GPIO
* Get into struct clk generalization and movement of clk
drivers into drivers/clk - handover from Jeremy Kerr.
We will do this in Cambridge or something like that.
=== Issues ===
* GPIO pincontrol aspects stalled on the mailing list,
who cares, directing my attention elsewhere FTM.
* Shanghaiied for some internal conflict resolution
at ST-Ericsson. Not too much though.
Thanks,
Linus Walleij
Hi all,
I wanted to provide an update of what the kernel team accomplished at
Linaro Connect last week for those who were unable to attend.
The team was split into two main groups, the first being led by Grant
Likely and focusing on continuing the work on enabling Device Tree
support on ARM platforms. In addition to Linaro members, David Brown
and Nicolas Ferre also worked on DT support for their platforms
and all together the team got much accomplished in 5 days there
with a number of patches ready for the 3.2 merge windows:
* Several device drivers for the Freescale iMX were converted
to use DT-base discovery.
* Code was written to bridge between the Device Tree model and
TI OMAP's HWMOD.
* Initial support for DT was added to the Samsung Exynos, Qualcomm MSM86,
and Atmel AT91 by Nicolas Ferre
* DT skeleton code was written for the ARM Versatile and ST-E platforms.
The rest of the team primarilly focused on code cleanup and development
to work towards a multi-SOC zImage. Nicolas posted and original
email with info at http://bit.ly/oVQRQm and folks took individual
bits to work on. Russel King was also in attendance and there was
good discussion around some of these topics. What we discovered
is that many of these issues are multi-layered and as we start
cleaning up one bit of code, we need to fix other areas to make
them work consistently. The areas we looked into were:
* Replacing low level IO accessor macros with runtime selected functions
based on platform type.
* Replacing the global NR_IRQS constant with per-board information
* Removing duplicated low-level serial output functions. Currently the
code to print "Uncompressing kernel..." and the code for low-level
in-kernel serial output are completely different but could be made
to be the same. At the end of the day, the method we're looking
at using is providing a special node in the DT that contains the
physical mapping of the debug serial registers in place.
* Removing CLOCK_TICK_RATE from the kernel
* Replace CONSISTENT_DMA_SIZE with a runtime variable
* Removing arch_idle() and moving to using the run time
selected pm_idle hooks. Similar work to be done with
arch_reset()
* Getting rid of VMALLOC_END. Russel and Nicolas agreed
that we'll just use a static VMALLOC_END for everyone
and insert static I/O mappings in there.
In addition the the above work, KWG members also were involved in
discussions about continuous integration and testing of the upstream
kernels on ARM platforms, kernel development process at Linaro and
how to better stay in sync with upstream, -stable patches for ARM
platforms, Android development, and flash storage roadmap to name a few.
Overall, the team had an extremely productive week of hacking on existing
projects and on coming up with more detailed plans on what other items
on which we need to focus.
I want to thank everone on the team for their hard work last week
and also the non-Linaro developers David Brown, Will Deacon, Nicolas
Ferre, and Marc Zyngier for taking time to join us in hacking and planning.
All together connect was a great technically focused event and I highly
encourage folks to join us in Orlando in November. You can register now
at http://connect.linaro.org/events/event/linaro-connect-q411/.
Thanks,
~Deepak
== Per Forlin <perfor> ==
=== Highlights ===
* Sent out patches to improve performance in usb gadget mass storage
* https://lkml.org/lkml/2011/8/8/107
* https://lkml.org/lkml/2011/8/8/411
* It's not necessary to make any further optimizations in the usb
gadget buffer pipeline form a throughput point of view.
=== Completed work items ===
* https://blueprints.edge.launchpad.net/linux-linaro/+spec/usb-gadget-mass-st…
* Run tests and analysis to identify performance issues in usb
gadget mass storage: DONE
* Implementation will be broken down and added here when the design
decision is made: DONE
* Make the number of gadget pipeline buffers variable: DONE
=== Plans ===
* Leaving for vacation today (Aug 10) back again Aug 17.
* Update design and status on my storage BPs.
