[PATCH] arm64: zynqmp: Add label to pmu fwnode

[Michal Simek]

On 2/27/24 09:40, lukas.funke-oss at weidmueller.com wrote:
> From: Lukas Funke <lukas.funke at weidmueller.com>
> 
> Some zynqmp SoCs (the cg series) only have two cpus. Thus, for some
> cases the cpu-affinity has to adapted, because cpu3 and cpu4 are

interrupt-affinity right?


> missing. By adding a label to the pmu fwnode the cpu affinity can
> be adapted in a device specific dt.

Why do you need to do it? What problem do you have if you don't change it?
It shouldn't be different compare to max_cpus=2 right?

> 
> Signed-off-by: Lukas Funke <lukas.funke at weidmueller.com>
> ---
>   arch/arm/dts/zynqmp.dtsi | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/dts/zynqmp.dtsi b/arch/arm/dts/zynqmp.dtsi
> index b50b83b772..457f8e394f 100644
> --- a/arch/arm/dts/zynqmp.dtsi
> +++ b/arch/arm/dts/zynqmp.dtsi
> @@ -168,7 +168,7 @@
>   		bootph-all;
>   	};
>   
> -	pmu {
> +	pmu: pmu {
>   		compatible = "arm,armv8-pmuv3";
>   		interrupt-parent = <&gic>;
>   		interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>,

And I actually prefer to have labels for all nodes to be able to reference it.
That's why patch itself is good.

Thanks,
Michal