soc: ti: Add ti_sci_pm_domains driver
authorDave Gerlach <d-gerlach@ti.com>
Tue, 4 Apr 2017 15:59:27 +0000 (08:59 -0700)
committerSantosh Shilimkar <ssantosh@kernel.org>
Tue, 4 Apr 2017 15:59:27 +0000 (08:59 -0700)
commit52835d59fc6cc7f3c3cfdb4a194ddc9ebd6c0c31
tree2572634093aab583da779d681f4eccff0d3c50c4
parent7cc119f29b197f967161ca94c9d5cb5073b4b52b
soc: ti: Add ti_sci_pm_domains driver

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>
MAINTAINERS
arch/arm/mach-keystone/Kconfig
drivers/soc/ti/Kconfig
drivers/soc/ti/Makefile
drivers/soc/ti/ti_sci_pm_domains.c [new file with mode: 0644]