[PATCH 4/6] arm64: Add DTS support for FSL's LS2085A SoC

Catalin Marinas catalin.marinas at arm.com
Fri Aug 15 06:10:26 PDT 2014


On Fri, Aug 15, 2014 at 01:53:13PM +0100, Stuart Yoder wrote:
> > On Fri, Aug 15, 2014 at 10:49:13AM +0100, Bhupesh Sharma wrote:
> > > +	cpus {
> > > +		#address-cells = <2>;
> > > +		#size-cells = <0>;
> > > +
> > > +		/* We have 4 clusters having 2 Cortex-A57 cores each */
> > > +		cpu at 0 {
> > > +			device_type = "cpu";
> > > +			compatible = "arm,cortex-a57";
> > > +			reg = <0x0 0x0>;
> > > +			enable-method = "spin-table";
> > > +			cpu-release-addr = <0x0 0x8000fff8>;
> > > +		};
> > 
> > Why not PSCI?
> 
> It simply is where we are today-- we don't have functioning PSCI yet
> but plan to get there over time.

Thanks for clarification.

> All the existing device trees
> in arch/arm64 use "spin-table", so it seems that other platforms are
> in the same situation:
>    apm-storm.dtsi

Not possible because there is no EL3 mode on the CPU implementation.

>    foundation-v8.dts
>    rtsm_ve-aemv8a.dts

These work with the latest boot wrapper (which overrides the DT nodes
and passes the PSCI information).

-- 
Catalin



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