[PATCH 2/10] sbc8560: Add v1 device tree source for Wind River SBC8560 board

Kumar Gala galak at kernel.crashing.org
Wed Feb 6 02:44:23 EST 2008


On Feb 4, 2008, at 8:40 PM, David Gibson wrote:

> On Fri, Feb 01, 2008 at 08:46:32AM -0600, Kumar Gala wrote:
>>
>> On Feb 1, 2008, at 1:54 AM, David Gibson wrote:
>>
>>> On Thu, Jan 24, 2008 at 06:41:24PM -0500, Paul Gortmaker wrote:
> [snip]
>>>> +		epld at 5,0 {
>>>
>>> I'm not entirely convinced on this two-level representation.  I  
>>> think
>>> the FSL people need to get together and define a binding (or set of
>>> bindings) for their various chipselect style external bus bridges.
>>
>> It seems reasonable if you had a FPGA off of the localbus to have a
>> two level representation.  One for the localbus controller on the FSL
>> part and the child to describe the FPGA.
>>
>> What are you expecting beyond what we have today?  I guess I'm asking
>> what's missing from the localbus nodes we have?
>
> Sorry, I was probably misleading.  All I really meant is that I don't
> know enough about these FSL bus bridge arrangements to assess if this
> representation is the most sensible one.  I'm presuming that this
> chipselect bridge unit is a more-or-less standard ASIC appearing on
> lots of the FSL chips, so it would be nice to have a standard binding
> for them, as we do for the roughly-equivalent EBC bridge on 4xx.

Is there a writeup for EBC?  I'll take a look at it and see if it  
makes senses for the freescale 'localbus'.

- k



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