soc: ti: Add ti_sci_pm_domains driver

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Introduce a ti_sci_pm_domains driver to act as a generic pm domain
provider to allow each device to attach and associate it's ti-sci-id so
that it can be controlled through the TI SCI protocol.

This driver implements a simple genpd where each device node has a
phandle to the power domain node and also must provide an index which
represents the ID to be passed with TI SCI representing the device using
a single phandle cell. The driver manually parses the phandle to get the
cell value. Through this interface the genpd dev_ops start and stop
hooks will use TI SCI to turn on and off each device as determined by
pm_runtime usage.

Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Keerthy <j-keerthy@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Signed-off-by: Santosh Shilimkar <ssantosh@kernel.org>

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Dave Gerlach 2017-04-04 08:59:27 -07:00 • committed by Santosh Shilimkar

parent 7cc119f29b

commit 52835d59fc

5 changed files with 217 additions and 0 deletions

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MAINTAINERS

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arch/arm/mach-keystone/Kconfig

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drivers/soc/ti/Kconfig

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drivers/soc/ti/Makefile

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drivers/soc/ti/ti_sci_pm_domains.c

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