On 2017-03-28, 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@xxxxxxxxxx>
> Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
Tested on a jetson-tx1; all CPUs were recognized.
Tested-By: Vagrant Cascadian <vagrant@xxxxxxxxxx>
> ---
> 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@0 {
> + enable-method = "psci";
> + };
> +
> + cpu@1 {
> + enable-method = "psci";
> + };
> +
> + cpu@2 {
> + enable-method = "psci";
> + };
> +
> + cpu@3 {
> + enable-method = "psci";
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
> +
> regulators {
> vdd_gpu: regulator@100 {
> compatible = "pwm-regulator";
> diff --git a/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi b/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
> index 0ec92578cacb..67cb039965fd 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra210-p2530.dtsi
> @@ -51,4 +51,28 @@
> clock-frequency = <32768>;
> };
> };
> +
> + cpus {
> + cpu@0 {
> + enable-method = "psci";
> + };
> +
> + cpu@1 {
> + enable-method = "psci";
> + };
> +
> + cpu@2 {
> + enable-method = "psci";
> + };
> +
> + cpu@3 {
> + enable-method = "psci";
> + };
> + };
> +
> + psci {
> + compatible = "arm,psci-0.2";
> + method = "smc";
> + };
> +
> };
> --
> 2.7.4
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