[PATCH] arm64: tegra: Add CPU and PSCI nodes for NVIDIA Tegra210 platforms

[Sudeep Holla]

On 28/03/17 12:48, Jon Hunter wrote:
> Add the CPU and PSCI nodes for the NVIDIA Tegra210 platforms so that
> all CPUs can be enabled on boot. This assumes that the PSCI firmware
> has been loaded during the initial bootstrap on the device before the
> kernel starts (which is typically the case for these platforms). The
> PSCI firmware version is set to v0.2 which aligns with the current
> shipping version for Tegra.
> 
> Reported-by: Martin Michlmayr <tbm at cyrius.com>
> Signed-off-by: Jon Hunter <jonathanh at nvidia.com>
> ---
>  arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 23 +++++++++++++++++++++++
>  arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi | 24 ++++++++++++++++++++++++
>  2 files changed, 47 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
> index 906fb836d241..de1696c28140 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi
> @@ -296,6 +296,29 @@
>  		};
>  	};
>  
> +	cpus {
> +		cpu at 0 {
> +			enable-method = "psci";

Is some firmware expected to populate other required properties ?

If yes, why not populate everything in the firmware ?

If no, how does it even boot secondaries without the "reg" property
that usually contains MPIDR.

-- 
Regards,
Sudeep