Re: [PATCH v3] cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs

Mike Tipton
2025-05-06T06:22:06Z

On Mon, Apr 28, 2025 at 07:47:28AM -0700, Mike Tipton wrote:
> Currently, all SCMI devices with performance domains attempt to register
> a cpufreq driver, even if their performance domains aren't used to
> control the CPUs. The cpufreq framework only supports registering a
> single driver, so only the first device will succeed. And if that device
> isn't used for the CPUs, then cpufreq will scale the wrong domains.
>
> To avoid this, return early from scmi_cpufreq_probe() if the probing
> SCMI device isn't referenced by the CPU device phandles.
>
> This keeps the existing assumption that all CPUs are controlled by a
> single SCMI device.
>
> Signed-off-by: Mike Tipton <quic_mdtipton@quicinc.com>
> Reviewed-by: Peng Fan <peng.fan@nxp.com>
> ---

Hi Sudeep / Viresh,

Any thoughts on this?

Thanks,
Mike