reset: spacemit: Add SpacemiT K3 reset driver

Add support for the SpacemiT K3 SoC reset controller. The K3 reset
driver reuses the common reset controller code and provides K3-specific
reset data fo

reset: spacemit: Add SpacemiT K3 reset driver

Add support for the SpacemiT K3 SoC reset controller. The K3 reset
driver reuses the common reset controller code and provides K3-specific
reset data for devices managed by the following units:

- MPMU (Main Power Management Unit)
- APBC (APB clock unit)
- APMU (Application Subsystem Power Management Unit)
- DCIU (DMA Control and Interface Unit)

Acked-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://lore.kernel.org/spacemit/20260114092742-GYC7933267@gentoo.org/ [1]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

show more ...

reset: spacemit: Extract common K1 reset code

Extract the common reset controller code from the K1 driver into
separate reset-spacemit-common.{c,h} files to prepare for additional
SpacemiT SoCs that

reset: spacemit: Extract common K1 reset code

Extract the common reset controller code from the K1 driver into
separate reset-spacemit-common.{c,h} files to prepare for additional
SpacemiT SoCs that share the same reset controller architecture.

The common code includes handlers for reset assert and deassert
operations and probing for auxiliary bus devices.

Changes during extraction:
- Module ownership: Use dev->driver->owner instead of THIS_MODULE in
spacemit_reset_controller_register() to correctly reference the
calling driver's module.
- Rename spacemit_reset_ids to spacemit_k1_reset_ids.
- Define new namespace "RESET_SPACEMIT" for the exported common
functions (spacemit_reset_probe) and update K1 driver to import it.

This prepares for additional SpacemiT SoCs (K3) that share the same reset
controller architecture.

Reviewed-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://lore.kernel.org/spacemit/20260114092742-GYC7933267@gentoo.org/ [1]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

show more ...

reset: Create subdirectory for SpacemiT drivers

Create a dedicated subdirectory for SpacemiT reset drivers to allow
for better organization as support for more SoCs is added.

Move the existing K1 r

reset: Create subdirectory for SpacemiT drivers

Create a dedicated subdirectory for SpacemiT reset drivers to allow
for better organization as support for more SoCs is added.

Move the existing K1 reset driver into this new directory and rename
it to reset-spacemit-k1.c.

Rename the Kconfig symbol to RESET_SPACEMIT_K1 and update its default
from ARCH_SPACEMIT to SPACEMIT_K1_CCU. The reset driver depends on the
clock driver to register reset devices as an auxiliary device, so the
default should reflect this dependency.

Also sort the drivers/reset/Kconfig entries alphabetically.

Reviewed-by: Alex Elder <elder@riscstar.com>
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Reviewed-by: Yixun Lan <dlan@kernel.org>
Link: https://lore.kernel.org/spacemit/20260114092742-GYC7933267@gentoo.org/ [1]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

show more ...