Kernel PPS processing

Gary E. Miller gem at
Mon Jul 4 23:19:18 UTC 2016

Yo Achim!

On Mon, 4 Jul 2016 08:43:40 +0000 (UTC)
Achim Gratz <Stromeko at NexGo.DE> wrote:

> Gary E. Miller <gem <at>> writes:
> > > The BCM SoC actually is a media processor with an ARM subsystem
> > > and not the other way around as typically found elsewhere.  The
> > > timestamp counter and all I/O is provided by the VC4.  
> > 
> > Got a citation for that?  
> hardware/raspberrypi/bcm2835/BCM2835-ARM-Peripherals.pdf

Good stuff, but I find no mention of GPIO timestamping..

> hardware/raspberrypi/bcm2836/QA7_rev3.4.pdf

Nothing at all about GPIO or timestamping.

> videocore/VideoCoreIV-AG100-R.pdf

Nothing at all about GPIO or timestamping.

Did I miss something?

> There seems to be nothing up yet for the BCM2837 (Pi3), but it's
> basically just replacing the A7 cluster in the BCM2836 with an A8
> cluster.

Yeah, I'm wondering why the dealy in Linux kernel for 64 bit A8?

Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at  Tel:+1 541 382 8588
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