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Rajendra Nayak c016baf7dc PM: domains: Add support for 'required-opps' to set default perf state
Some devices within power domains with performance states do not
support DVFS, but still need to vote on a default/static state
while they are active. They can express this using the 'required-opps'
property in device tree, which points to the phandle of the OPP
supported by the corresponding power-domains.

Add support to parse this information from DT and then set the
specified performance state during attach and drop it on detach.
runtime suspend/resume callbacks already have logic to drop/set
the vote as needed and should take care of dropping the default
perf state vote on runtime suspend and restore it back on runtime
resume.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2021-08-16 18:45:29 +02:00
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drivers PM: domains: Add support for 'required-opps' to set default perf state 2021-08-16 18:45:29 +02:00
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include PM: domains: Add support for 'required-opps' to set default perf state 2021-08-16 18:45:29 +02:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
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