thermal: khadas-mcu-fan: Add fan config from platform data Add regulator support

Introduce platform name, control register and duty-cycle
levels per variant.
VIM4 uses a different register and level set (0-100)
 declared as a list (0, 30, 40, 55, 75, 100) compared
 to previous boards (0-3).

MAX_LEVEL is kept and bumped from 3 to 5 to make
the speed change more gradual with the newer MCUs.

The cooling device's state is stored as an index into levels[],
and khadas_mcu_fan_set_level() writes levels[state] to fan_reg,
rather than writing the raw state value as before.

Optionally acquire and enable a "fan" regulator supply
at probe time and on resume,
so boards that gate fan power through a regulator are handled.
The regulator is released via a devm_add_action_or_reset()
callback.

Signed-off-by: Ronald Claveau <linux-kernel-dev@aliel.fr>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Acked-by: Daniel Lezcano <daniel.lezcano@oss.qualcomm.com>
Link: https://patch.msgid.link/20260917-add-mcu-fan-khadas-vim4-v12-4-497cd543a148@aliel.fr
Signed-off-by: Lee Jones <lee@kernel.org>

0 files changed, 0 insertions, 0 deletions