Re: [PATCH] cpufreq: scmi: Fix OPP addition failure with a dummy clock provider

[Viresh Kumar <viresh.kumar@linaro.org>]

On 10-11-20, 11:10, Sudeep Holla wrote:
> Commit dd461cd9183f ("opp: Allow dev_pm_opp_get_opp_table() to return
> -EPROBE_DEFER") handles -EPROBE_DEFER for the clock/interconnects within
> _allocate_opp_table() which is called from dev_pm_opp_add and it
> now propagates the error back to the caller.
> 
> SCMI performance domain re-used clock bindings to keep it simple. However
> with the above mentioned change, if clock property is present in a device
> node, opps fails to get added with below errors until clk_get succeeds.
> 
>  cpu0: failed to add opp 450000000Hz
>  cpu0: failed to add opps to the device
>  ....(errors on cpu1-cpu4)
>  cpu5: failed to add opp 450000000Hz
>  cpu5: failed to add opps to the device
> 
> So, in order to fix the issue, we need to register dummy clock provider.
> With the dummy clock provider, clk_get returns NULL(no errors!), then opp
> core proceeds to add OPPs for the CPUs.
> 
> Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
> Cc: Viresh Kumar <viresh.kumar@linaro.org>
> Fixes: dd461cd9183f ("opp: Allow dev_pm_opp_get_opp_table() to return -EPROBE_DEFER")
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> ---
>  drivers/cpufreq/scmi-cpufreq.c | 6 ++++++
>  1 file changed, 6 insertions(+)

Applied. Thanks.

-- 
viresh