[PATCH v3 1/4] dt/bindings: Introduce the FSL QorIQ DPAA BMan

[Scott Wood]

On Fri, 2014-11-07 at 03:38 -0600, Emil Medve wrote:
> Hello Scott,
> 
> 
> On 11/07/2014 02:19 AM, Scott Wood wrote:
> > On Fri, 2014-11-07 at 02:14 -0600, Emil Medve wrote:
> >> Hello Scott,
> >>
> >>
> >> On 11/07/2014 01:34 AM, Scott Wood wrote:
> >>> On Fri, 2014-11-07 at 01:31 -0600, Emil Medve wrote:
> >>>> Hello Scott,
> >>>>
> >>>>
> >>>> On 11/06/2014 03:49 PM, Scott Wood wrote:
> >>>>> On Wed, 2014-11-05 at 09:18 -0600, Emil Medve wrote:
> >>>>>> +Devices connected to a BMan instance via Direct Connect Portals (DCP) must link
> >>>>>> +to the respective BMan instance
> >>>>>> +
> >>>>>> +- fsl,bman
> >>>>>> +	Usage:		Required
> >>>>>> +	Value type:	<prop-encoded-array>
> >>>>>> +	Description:	List of phandle and DCP index pairs, to the BMan instance
> >>>>>> +			to which this device is connected via the DCP
> >>>>>
> >>>>> Does software need the DCP index (though for QMan there do seem to be a
> >>>>> few registers associated with each DCP)?  Where can I find that info in
> >>>>> the manual?
> >>>>
> >>>> The DCP index helps describe the topology of the devices connected to
> >>>> the B/QMan. One might be tempted to use some address to reference said
> >>>> DCP, unfortunately the pertinent registers/bits for said DCP(s) are not
> >>>> into a compact region. Look at the CCSR memory map for B/QMan
> >>>>
> >>>> In the QMan case things are marginally better. For each hardware portal
> >>>> there are a handful of (vaguely named *DCx*, *DCPx* or *DCP*) registers
> >>>> (configuration, performance monitoring and debugging). However, still
> >>>> registers and bits spread here and there
> >>>>
> >>>> In the BMan case things are a bit worse as the registers names are less
> >>>> friendly and still spread around
> >>>>
> >>>> Do you need specific names/offsets?
> >>>
> >>> My question about the manual wasn't rhetorical -- I tried to find this
> >>> information and couldn't.
> >>
> >> I get that. As I said, the registers/bits are spread around in the CCSR
> >> space of each block and not named excessively friendly. As such I hinted
> >> for some search patterns to make it easier to find them. In order to
> >> progress the review I'm willing to prepare a list. Just let me know
> > 
> > Could you point me to the section of the manual where this information
> > is -- friendly or otherwise?  I saw the QMan direct connect portal
> > registers.  I didn't see how to tell which <i> in DCPi_xxx goes with
> > which device.
> 
> For QMan look into section '6.3.10 Direct Connect Portals (DCPs)'. The
> BMan DCP assignment is the same

Thanks, I'm not sure how I missed that.

-Scott