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power: zynqmp: Add power domain driver for ZynqMP

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Driver should be enabled by CONFIG_POWER_DOMAIN=y and
CONFIG_ZYNQMP_POWER_DOMAIN=y. Power domain driver doesn't have own DT node
but it uses zynqmp firmware DT node that's why there is a need to bind
driver when firmware node is found.

Driver itself is simple. It is sending pmufw config object overlay for
enabling access to device which is done in ...domain_request().
In ...domain_on() capabilities are passed and node is requested.
This should be bare minimum of required to get power domain driver working.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Link: https://lore.kernel.org/r/f4b9433b91c0b18c375b061c7a4e29d428f70547.1644226055.git.michal.simek@xilinx.com
This commit is contained in:
Michal Simek
2022-02-07 10:27:37 +01:00
parent 2f9dd4bfc7
commit e0283cbdfd
6 changed files with 151 additions and 0 deletions
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@@ -634,6 +634,7 @@ F: drivers/mtd/nand/raw/zynq_nand.c
F: drivers/net/phy/xilinx_phy.c
F: drivers/net/zynq_gem.c
F: drivers/phy/phy-zynqmp.c
F: drivers/power/domain/zynqmp-power-domain.c
F: drivers/serial/serial_zynq.c
F: drivers/reset/reset-zynqmp.c
F: drivers/rtc/zynqmp_rtc.c