Re: [PATCH v4] cpufreq: scmi: Skip SCMI devices that aren't used by the CPUs
From: Viresh Kumar
Date: Mon May 19 2025 - 06:40:26 EST
On 14-05-25, 20:53, 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@xxxxxxxxxxx>
> Reviewed-by: Peng Fan <peng.fan@xxxxxxx>
> Reviewed-by: Cristian Marussi <cristian.marussi@xxxxxxx>
> Reviewed-by: Sudeep Holla <sudeep.holla@xxxxxxx>
> Tested-by: Cristian Marussi <cristian.marussi@xxxxxxx>
Applied. Thanks.
--
viresh