I was simply trying to point out that you *could* make sysfs work. Even in some high speed situations. I do not necessarily disagree with you at all however.
Anyway, I think we have hijacked Charles' post enough. On Mon, Jan 27, 2014 at 10:59 PM, John Syn <[email protected]> wrote: > > > From: William Hermans <[email protected]> > Reply-To: <[email protected]> > Date: Monday, January 27, 2014 at 9:43 PM > > To: <[email protected]> > Subject: Re: [beagleboard] RFC: Universal Device Tree > > John, > > Without sounding like I am trying to argue too much, there are cases in > electronics where you could easily overwhelm a 1Ghz processor. > > Imagine one very "simple" use case. A computer controlled switch mode > power supply where power switching could happen from 400Khz to 2Mhz > changeable on the fly based on readings taken from 1 or more ADCs reading > 2msps. I seriously doubt a BBB could handle this alone. Now add in > networking, web UI, security, and countless other aspects to the device and > . . . yeah it would never happen without external devices. > > Agreed, but what I was proposing was to use the full capability of the > existing hardware. Using sysfs doesn't begin to harness the capabilities of > the BBB I/O hardware. > > > After quickly the Wikipedia page for Netlink, I do however find it very > interesting, and in fact is IPC between user / kernel mode processes. Among > other things. > > > On Mon, Jan 27, 2014 at 10:36 PM, William Hermans <[email protected]>wrote: > >> Ok, this is what I was thinking was the case, but at the same time I was >> hoping it was for 3.12.x . . . >> >> Did i read your original post correctly in that you plan on documenting >> this fully ( eventually ) ? >> >> >> On Mon, Jan 27, 2014 at 10:30 PM, Charles Steinkuehler < >> [email protected]> wrote: >> >>> On 1/27/2014 9:30 PM, William Hermans wrote: >>> > Hi Charles, >>> > >>> > Sorry if this is an incredibly dense question. But which kernel >>> version is >>> > this for? >>> >>> It's for the 3.8 kernel, unless someone's gotten device tree overlays >>> working with the 3.12 kernels while I wasn't looking. :) >>> >>> It should work with any 3.8 kernel (regular or Xenomai), but if you >>> don't have the patch to gpio-of-helper to allow exporting GPIO pins with >>> changeable direction they'll all be stuck as inputs. >>> >>> -- >>> Charles Steinkuehler >>> [email protected] >>> >>> -- >>> For more options, visit http://beagleboard.org/discuss >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "BeagleBoard" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> For more options, visit https://groups.google.com/groups/opt_out. >>> >> >> > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to the Google Groups > "BeagleBoard" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/groups/opt_out. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
