Re: [Phishing Risk] [External] Re: [PATCH 0/3] Add a host power device

[Philippe Mathieu-Daudé]

On 20/9/22 17:17, Zhang Jian wrote:
> Hi Philippe,
>
> Thanks for your reply.
>
> On Tue, Sep 20, 2022 at 7:09 AM Philippe Mathieu-Daudé <f4bug@amsat.org> wrote:
> > Hi Jian,
> >
> > On 19/9/22 19:21, Jian Zhang wrote:
> > > This patchset adds a host power device and added it into the g220a
> > > mahcine. The BMC have a important is to control the power of the host,
> > > usually it is nessary in a hardware platform.
> > >
> > > The BMC(soc) usually had a output pin to control the power of the host,
> > > and a input pin to get the power status of the host.
> > >
> > > The host power device is a generic device to simulate the host power,
> > > accept the power control command from the BMC and report the power
> > > status.
> > >
> > > Test on the g220a machine, the host power control command can be simply
> > > work.
> > >
> > > Jian Zhang (3):
> > >     hw/gpio/aspeed_gpio: Add gpios in/out init
> > >     hw/misc/host_power: Add a simple host power device
> > >     hw/arm/aspeed: g220a: Add host-power device
> >
> > "power-good" is just a TYPE_LED object, but it doesn't seem you are
> > really interested in using it.
> yeah, i'd like to just send an irq when the `switch` status changed.

You can do that using feeding the switch latch output to a 2-lines
TYPE_SPLIT_IRQ object, then wire 1 line to the SoC input, and the
other one to the TYPE_LED input.