tree 0c83af2dc1b8dcb55052f380797dd1b4548263bb
parent 93d1d8b114ccad1681d72e2c560047bea14602ef
author Marek Vasut <marex@denx.de> 1649803371 +0200
committer Stefano Babic <sbabic@denx.de> 1650537863 +0200

imx: power-domain: Get rid of SMCCC dependency

This driver is the only SMCCC dependency in iMX8M U-Boot port. Rework
the driver based on Linux GPCv2 driver to directly control the GPCv2
block instead of using SMCCC calls. This way, U-Boot can operate the
i.MX8M power domains without depending on anything else.

This is losely based on Linux GPCv2 driver. The GPU, VPU, MIPI power
domains are not supported to save space, since they are not useful in
the bootloader. The only domains kept are ones for HSIO, PCIe, USB.

Tested-By: Tim Harvey <tharvey@gateworks.com> #imx8mp-venice-defconfig
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>