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| author | Ulf Hansson <ulf.hansson@linaro.org> | 2023-09-19 14:16:05 +0200 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-09-21 17:35:14 +0200 |
| commit | 2af23ceb8624a419eaf40295c11fcb86ec9ee303 (patch) | |
| tree | 1635e3cccbd6ba74284223934b351a16e3bbb8b0 /drivers/firmware/arm_scmi | |
| parent | PM: domains: Allow genpd providers to manage OPP tables directly by its FW (diff) | |
| download | linux-2af23ceb8624a419eaf40295c11fcb86ec9ee303.tar.xz linux-2af23ceb8624a419eaf40295c11fcb86ec9ee303.zip | |
pmdomain: arm: Add the SCMI performance domain
To enable support for performance scaling (DVFS) for generic devices with
the SCMI performance protocol, let's add an SCMI performance domain. This
is being modelled as a genpd provider, with support for performance scaling
through genpd's ->set_performance_state() callback.
Note that, this adds the initial support that allows consumer drivers for
attached devices, to vote for a new performance state via calling the
dev_pm_genpd_set_performance_state(). However, this should be avoided as
it's in most cases preferred to use the OPP library to vote for a new OPP
instead. The support using the OPP library isn't part of this change, but
needs to be implemented from subsequent changes.
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20230919121605.7304-1-ulf.hansson@linaro.org
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'drivers/firmware/arm_scmi')
| -rw-r--r-- | drivers/firmware/arm_scmi/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/firmware/arm_scmi/Kconfig b/drivers/firmware/arm_scmi/Kconfig index ea0f5083ac47..706d1264d038 100644 --- a/drivers/firmware/arm_scmi/Kconfig +++ b/drivers/firmware/arm_scmi/Kconfig @@ -181,6 +181,18 @@ config ARM_SCMI_POWER_DOMAIN will be called scmi_pm_domain. Note this may needed early in boot before rootfs may be available. +config ARM_SCMI_PERF_DOMAIN + tristate "SCMI performance domain driver" + depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) + default y + select PM_GENERIC_DOMAINS if PM + help + This enables support for the SCMI performance domains which can be + enabled or disabled via the SCP firmware. + + This driver can also be built as a module. If so, the module will be + called scmi_perf_domain. + config ARM_SCMI_POWER_CONTROL tristate "SCMI system power control driver" depends on ARM_SCMI_PROTOCOL || (COMPILE_TEST && OF) |