[PATCH 7/7] dts: calxeda: add ARM PSCI binding

[Mark Rutland]

On Sun, Jul 28, 2013 at 10:56:38PM +0100, Rob Herring wrote:
> From: Rob Herring <rob.herring at calxeda.com>
> 
> Add the PSCI binding for Calxeda SOCs. The PSCI function numbers are
> different from the DT binding example because the numbering changed in
> revisions of the PSCI spec and are already fixed in highbank firmware.
> Since the numbering is transparent to the kernel, this difference is not
> significant.
> 
> Signed-off-by: Rob Herring <rob.herring at calxeda.com>
> ---
>  arch/arm/boot/dts/ecx-common.dtsi | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/ecx-common.dtsi b/arch/arm/boot/dts/ecx-common.dtsi
> index e8559b7..f1dfc09 100644
> --- a/arch/arm/boot/dts/ecx-common.dtsi
> +++ b/arch/arm/boot/dts/ecx-common.dtsi
> @@ -19,6 +19,16 @@
>  		bootargs = "console=ttyAMA0";
>  	};
>  
> +	psci {
> +		compatible	= "arm,psci";
> +		method		= "smc";
> +		cpu_suspend	= <0x84000002>;
> +		cpu_off		= <0x84000004>;
> +		cpu_on		= <0x84000006>;
> +		system_off	= <0x84000100>;
> +		system_reset	= <0x84000101>;
> +	};
> +

I see this is somewhat beyond the original PSCI, given the addition of
SYSTEM_OFF and SYSTEM_RESET, but not quite PSCI 0.2 as you don't have
PSCI_VERSION.

It would be nice it the compatible string were more specific here to
deal with this and any implementation-specific power_state ID values.
Something like "calxeda,highbank-psci", "arm,psci" ?

Thanks,
Mark.