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 Cheers, -- 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
