On Wed, Aug 07, 2013 at 02:45:36AM +0100, Will Deacon wrote: > On Mon, Aug 05, 2013 at 12:37:40PM +0100, Punit Agrawal wrote: > > On 23/07/13 10:19, Punit Agrawal wrote: > > > The CCI PMU can profile bus transactions at the master and slave > > > interfaces of the CCI. The PMU can be used to observe an aggregated view > > > of the bus traffic between the various components connected to the CCI. > > > > > > Extend the existing CCI driver to support the PMU by registering a perf > > > backend for it. > > > > > > Document the device tree binding to describe the CCI PMU. > > > > > > Cc: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > > > Cc: Nicolas Pitre <nico@xxxxxxxxxx> > > > Cc: Dave Martin <dave.martin@xxxxxxxxxx> > > > Cc: Rob Herring <rob.herring@xxxxxxxxxxx> > > > Cc: Will Deacon <will.deacon@xxxxxxx> > > > Signed-off-by: Punit Agrawal <punit.agrawal@xxxxxxx> > > > Reviewed-by: Will Deacon <will.deacon@xxxxxxx> > > > --- > > > Documentation/devicetree/bindings/arm/cci.txt | 38 ++ > > > drivers/bus/arm-cci.c | 642 +++++++++++++++++++++++++ > > > 2 files changed, 680 insertions(+) > > > > > > > It's been 2 rc's since this patch was posted. If there are no objections > > would you be ok to take this patch via your tree? > > Sure. I'm currently travelling at the moment, so I'll try and get this done > as soon as I'm back. So, I just tried to test this patch but I'm getting issues when enabling CCI with mainline: ARM Versatile Express Boot Monitor Version: V5.1.5 Build Date: Jul 24 2012 Daughterboard Site 1: V2P-CA15 Cortex A15 Daughterboard Site 2: V2P-CA15_A7 Cortex A15 Running boot script from flash - BOOTSCRIPT Loaded kernel - linuxtc2 Booting kernel @ 0x80008000 Command line 'ip=dhcp root=/dev/nfs nfsroot=10.1.203.36:/exports/linaro-13.06,tcp rw console=ttyAMA0,38400 mem=2G loglevel=9 user_debug=31 earlyprintk debug' ATAGs @ 0x80000100 Fatal Error: Unhandled Exception - Undefined We're exploding *really* early, and I have no idea why. If I remove CCI from the equation (either in the kernel or the device-tree), then I can boot as per usual. Any ideas? Do I need to enable something in the TC2 board firmware? Will -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
