soc: renesas: rcar-sysc: Enable Clock Domain for I/O devices
authorGeert Uytterhoeven <geert+renesas@glider.be>
Wed, 20 Apr 2016 12:02:40 +0000 (14:02 +0200)
committerSimon Horman <horms+renesas@verge.net.au>
Mon, 25 Apr 2016 23:56:27 +0000 (09:56 +1000)
commit1c8c77f52d1037c61468539e1d68c44f9e710536
tree23b0bcd29bed16d2a25977bf2f8732733b3bd298
parent2f024cef5b064d5498fe466dfe9492d46b5b12a4
soc: renesas: rcar-sysc: Enable Clock Domain for I/O devices

On R-Car H3, some power areas (e.g. A3VP) contain I/O devices, which are
also part of the CPG/MSSR Clock Domain.
On all R-Car SoCs, devices in the "always-on" PM Domain are part of the
Clock Domain served by the CPG/MSSR or CPG/MSTP driver.

Hook up the CPG/MSTP or CPG/MSSR Clock Domain attach/detach callbacks to
enable power management using module clocks. Which callback to hook up
depends on the presence of device nodes compatible with
"renesas,cpg-mstp-clocks". This clears the path for a future migration
from the CPG/MSTP to the CPG/MSSR driver on R-Car H1 and
Gen2.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
drivers/soc/renesas/rcar-sysc.c