[RFC] powerpc/fsl-pci: Document the "fsl, has-isa" property for Freescale PCI

[Kumar Gala]

On Apr 1, 2012, at 1:56 AM, Jia Hongtao wrote:

> If PCI is primary bus we should set isa_io/mem_base when parsing PCI bridge
> resources from device tree. The previous way to check the primary bus based
> on a hard-coded address named primary_phb_addr. Now we add a property named
> "fsl,has-isa" into device tree. In kernel we use this property to find out
> the bus is primary or not. This way is more flexible.
> 
> Signed-off-by: Jia Hongtao <B38951 at freescale.com>
> Signed-off-by: Li Yang <leoli at freescale.com>
> ---
> .../devicetree/bindings/powerpc/fsl/pci.txt        |   36 ++++++++++++++++++++
> 1 files changed, 36 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/powerpc/fsl/pci.txt

This isn't freescale specific, its linux specific.  If anything the property should be linux,has-isa.

But in general I dont think this is a good idea.  In truth one could search the device tree for:

	device_type = "isa";

to try and set this dynamically.

- k