[Skiboot] [RFC PATCH 00/11] Device tree updates

Vasant Hegde hegdevasant at linux.vnet.ibm.com
Thu Sep 29 15:05:46 AEST 2016

On 09/29/2016 02:29 AM, Benjamin Herrenschmidt wrote:
> On Wed, 2016-09-28 at 20:46 +0530, Vasant Hegde wrote:
>> Today on P8 system, we have few nodes/properties specific to service processor .
>> Ex:  on FSP based system we have /fsps node and on BMC based system we have /bmc
>> node.
>> On P9, since we are building DT, I was thinking of renaming it /sp. This may
>> require some changes
>> in OPAL. (Not sure about kernel side, haven't looked into it).
>> Is it fine to rename DT nodes/properties between processor releases -OR- Do we
>> want to continue
>> with existing properties (like /fsp on fsp based system). ?
> Is there *anything* in Linux that makes assumptions about these
> nodes ? If yes, then we shouldn't change them.


I don't think we are using these properties in Linux.

> FSPs and BMCs are fairly different anyway, I'm not so sure how
> interesting it is to put them under the same name like this.

Yeah. That's true.. May be we can detect service processor type while creating 
DT and
continue to create SP specific DT nodes. What you say?


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