ppc_sys.c with platform device model or create opb bus?
Grant Likely
glikely at gmail.com
Sun Jul 24 03:03:45 EST 2005
On 7/17/05, Yasushi SHOJI <yashi at atmark-techno.com> wrote:
> I feel that the ppc_sys_spec is for SoC, which doesn't dynamically
> change the peripherals it has. otoh, fpga based platform can have
> arbitrary number of devices if you configured so.
>
> I usually implement a device with PLB or OPB. for those bus, should I
> use platform device model or create new buses for each?
ppc_sys is just a convenient wrapper around the platform device model.
You can safely ignore ppc_sys if your board setup code calls
platform_device_register() for all of your devices directly.
Besides, as ppc moves to the flattened device tree for initializing
the platform bus, the whole ppc_sys stuff will be going away and the
device tree parsing code will call platform_device_* directly.
Cheers,
g.
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