pmdomain: imx: Make IMX8M/IMX9 BLK_CTRL tristate

Browse source

Convert IMX8M_BLK_CTRL and IMX9_BLK_CTRL from bool to tristate
to allow building as loadable modules.

This change is required to support Android devices using Generic Kernel
Image (GKI) kernels, where SoC-specific drivers must be built as loadable
modules rather than built into the core kernel image.

For i.MX8M and i.MX9 devices running Android with GKI kernels, the
BLK_CTRL drivers therefore need to be loadable. Without tristate
support, power domains cannot be initialized correctly, making these
systems non-functional under GKI.

Add prompt strings to make these options visible and configurable
in menuconfig, keeping them enabled by default on appropriate platforms.

Also remove the IMX_GPCV2_PM_DOMAINS dependency from IMX9_BLK_CTRL.
This dependency was incorrect from the beginning because i.MX93 uses a
different power domain architecture compared to i.MX8M series:

- i.MX8M uses GPCv2 (General Power Controller v2) for power domain
  management, hence IMX8M_BLK_CTRL correctly depends on it.

- i.MX93 uses BLK_CTRL directly without GPCv2. The hardware doesn't
  have GPCv2 at all.

Signed-off-by: Zhipeng Wang <zhipeng.wang_1@nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Ulf Hansson <ulfh@kernel.org>

...

This commit is contained in:

Zhipeng Wang 2026-04-20 11:22:54 +09:00 • committed by Ulf Hansson

parent 9956ad2afd

commit ce2bf98370

1 changed files with 7 additions and 4 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

11

drivers/pmdomain/imx/Kconfig

View file