Re: [Xen-devel] [PATCH 1/2] xen/arm: Initial support for PSCI-0.2

[Suravee Suthikulpanit <Suravee.Suthikulpanit@xxxxxxx>]

On 10/02/2014 09:19 AM, Ian Campbell wrote:
> > > +int __init psci_init(void)
> > > > >+{
> > > > >+    const struct dt_device_node *psci;
> > > > >+
> > > > >+    psci = dt_find_compatible_node(NULL, NULL, "arm,psci");
> > > > >+    if ( psci )
> > > > >+        return psci_init_0_1(psci);
> > > > >+
> > > > >+    psci = dt_find_compatible_node(NULL, NULL, "arm,psci-0.2");
> > > > >+    if ( psci )
> > > > >+        return psci_init_0_2(psci);
> > > > >+
> > >
> > >I think we need to prefer PSCI 0.2 if the platform supports the both
> > >version of PSCI.
> Yes, please.
>
> This may require also falling back to 0.1 if psci_init_0_2 fails?
Good point. I just realized that DT could have:

   compatible = "arm,psci-0.2", "arm,psci"

Suravee

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