why platform bus is called as virtual bus.

why platform bus is called as virtual bus.

[Madhu K]

Hi All,

I am kernel newbie, I have couple of doubts regarding platform bus.

1) In arm platform bus means which bus?
2) why platform bus is called virtual bus.?

Regards,
Madhu
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why platform bus is called as virtual bus.

[Chen-Yu Tsai]

On Thu, Nov 30, 2017 at 5:53 PM, Madhu K <madhu.sk89@gmail.com> wrote:
> Hi All,
>
> I have couple of doubts regarding platform bus.
>
> 1) In arm architecture, which bus we call it as platform bus?
> 2) Why platform bus is called as virtual bus?

The platform bus is a catch-all for devices that don't have a
real bus type, like PCI, I2C, SPI, etc., associated with it.

It is a construct within Linux, and unlike PCI which is a real
hardware bus, hence being called a "virtual" bus.

ChenYu

>
> can anybody please explain the above things.
>
> Thanks,
> Madhu
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

why platform bus is called as virtual bus.

[Madhu K]

Hi All,

I have couple of doubts regarding platform bus.

1) In arm architecture, which bus we call it as platform bus?
2) Why platform bus is called as virtual bus?

can anybody please explain the above things.

Thanks,
Madhu