Re: [PATCH v12 4/6] thermal: khadas-mcu-fan: Add fan config from platform data Add regulator support
From: Daniel Lezcano
Date: Fri Sep 18 2026 - 05:17:59 EST
On 9/17/26 09:59, Ronald Claveau via B4 Relay wrote:
From: Ronald Claveau <linux-kernel-dev@xxxxxxxx>Acked-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxxxxxxxx>
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.
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Ronald Claveau <linux-kernel-dev@xxxxxxxx>
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