On 30.04.21 04:35, along li wrote:
> PCI devices can be partitioned into cells, as we all know.
> But  some arm board  don't have PCI  bus.  The devices is  designed 
> into SOC. 
>
> can none-PCI devices  be partitioned into cells? 
> for example  network card in raspberry pi 4,    Can it be partitioned
> into cells?
>
> Any  demo or sugessition is wellcome!

Yes, you can also factor out non-PCI devices and assign them to non-root
cells. Platform devices generally have MMIO (-> memory region) and IRQs
(-> irqchip) as resources. Identify and add them to the non-root cell
config.

The only challenge can be managing clock control or pin muxing for such
devices. The control knobs can be located in devices that are hard or
impossible to partition.

Jan

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