[Skiboot] [PATCH v9 22/22] doc: PCI slot

Daniel Axtens dja at axtens.net
Fri Nov 20 15:34:29 AEDT 2015

Gavin Shan <gwshan at linux.vnet.ibm.com> writes:

The documentation makes a lot of sense :)

I just had one question, which really relates to an earlier patch but
which is documented here:

> +For Apollo and Firenze platform, following PCI slot properties are exported through
> +PCI device tree node except those generic properties (as above):
> +
> +ibm,slot-location-code		System location code string for the slot connector
> +ibm,slot-label			Slot label, part of "ibm,slot-location-code"

As I understand it, the slot-label property is used to name the
directories in /sys/bus/pci/slots. This is then read by lscpi and used
to generate the location output. There was some discussion on an
internal bugzilla about making slot-label the location code to match the
behaviour of pHyp.

I understand you particuarly want to make slot-label just the part of
the location code that is unique to the slot. I agree that the short
part makes more sense, but I wonder if pHyp compatiblity is a worthwhile
goal here?


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