Re: [PATCH] dt-bindings: arm: cpus: Deprecate Qualcomm generic compatibles

From: Konrad Dybcio

Date: Thu Jan 15 2026 - 05:19:52 EST


On 1/15/26 9:35 AM, Krzysztof Kozlowski wrote:
> Move four compatibles for Qualcomm Krait, Kryo, Oryon and Scorpion
> custom CPU cores out of the enum into separate one with deprecated: true
> annotation, because these are too generic names.
>
> These are names of the families and there are significant differences
> within individual processors, e.g. Kryo6xx can based on architectures
> from Cortex-X2, A710, A510 to A78 and probably more.
>
> Just like other vendor processors are differentiated, also Qualcomm CPUs
> should come with specific compatibles.
>
> Cc: Bjorn Andersson <andersson@xxxxxxxxxx>
> Cc: Konrad Dybcio <konradybcio@xxxxxxxxxx>
> Cc: linux-arm-msm@xxxxxxxxxxxxxxx
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxxxxxxxx>
> ---

[...]

> - - arm,armv8 # Only for s/w models

I'm still bitter about this one existing

$ rg '"arm,armv8"' arch -l | sort

arch/arm64/boot/dts/arm/foundation-v8.dtsi

This makes some sense (see [1])

arch/arm64/boot/dts/arm/fvp-base-revc.dts
arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts

These seem to be spawned with a specific virtualized Cortex type

arch/arm64/boot/dts/nvidia/tegra264.dtsi

:(

[1] https://developer.arm.com/documentation/100961/1130/Foundation-Platform-introduction/Platform-overview/Processor-models-in-the-Foundation-Platform?lang=en

Konrad