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SubjectRe: [PATCH 06/14] arm64: dts: sparx5: Add basic cpu support
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On 2020-05-15 16:09, Lars Povlsen wrote:
[...]
>>> + cpu0: cpu@0 {
>>> + compatible = "arm,cortex-a53", "arm,armv8";

Side note: only one compatible string for the real CPU please, running a
DT bindings check should complain about that.

>>> + device_type = "cpu";
>>> + reg = <0x0 0x0>;
>>> + enable-method = "spin-table";
>>
>> Really? This is 2020, not 2012 any more. Surely a new platform
>> boots using PSCI, and not *this*.
>>
>
> We don't currently support PSCI. The platform does not have TrustZone,
> hence we don't use ATF.
AIUI, part of the purpose of ATF is to provide a nice standardised
platform interface regardless of whether you care about Secure software
or not. It shouldn't take much to knock up a trivial ATF port that just
uses an internal spin-table for its PSCI backend - in fact I suspect
that's probably just a copy-paste from the RPi3 port ;)

Robin.

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