[PATCH] powerpc/85xx: clean up FPGA device tree nodes for Freecsale QorIQ boards

[Kumar Gala]

On Aug 30, 2011, at 10:01 PM, Tabi Timur-B04825 wrote:

> Kumar Gala wrote:
>> 
>> On Aug 30, 2011, at 9:51 PM, Tabi Timur-B04825 wrote:
>> 
>>> Kumar Gala wrote:
>>>> Do we really want the generic "fsl,fpga-cpld"&   "fsl,fpga-pixis"?  This seems to vague.
>>> 
>>> Yes, the PIXIS is generally register compatible across all boards.  There
>>> may be some minor differences, but the OCM driver can work with all PIXIS
>>> boards that have an PIXIS.
>> 
>> Is this true?  Don't we have pixis and ngpixis in u-boot?
> 
> I forgot about that.  Well, everything I said is true about the ngpixis, 
> so I guess I should use "ngpixis" instead of just "pixis" here.  I'll have 
> to check if the old pixis can be used this way.
> 
>> 
>>>> Also you need "pixis" on MPC8544DS, MPC8572DS, MPC8536DS.
>>> 
>>> Ok.
>>> 
>>>> Also fpga-cpld makes no sense if we keep this.  You are either a CPLD or FPGA not both.
>>> 
>>> Then I don't understand what the CPLD is.
>> 
>> http://en.wikipedia.org/wiki/Complex_programmable_logic_device
> 
> Ok, I get it now.  Is there a name for the CPLD we use on these chips? 
> I'm having a hard time getting proper documentation on the CPLD.  York 
> expressed similar frustration.
> 
> Perhaps these should be called board-control devices.  How about
> 
> 	fsl,boardcontrol-cpld
> 	fsl,boardcontrol-ngpixis
> 	fsl,boardcontrol-qixis

For the CPLD based boards I think:

<BOARDNAME>-cpld is best as there isn't really much consistent right now.

- k