[PATCH v9 4/6] thermal: khadas-mcu-fan: Add fan config from platform data Add regulator support
Daniel Lezcano
daniel.lezcano at oss.qualcomm.com
Thu Aug 6 19:34:11 PDT 2026
On 8/5/26 10:06, Ronald Claveau via B4 Relay wrote:
> From: Ronald Claveau <linux-kernel-dev at aliel.fr>
>
> Replace the hardcoded MAX_LEVEL constant and fan register
> with values read from platform_data (fan_reg, levels[] and nlevels),
> as new MCUs need different values.
>
> 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.
>
> Reviewed-by: Neil Armstrong <neil.armstrong at linaro.org>
> Signed-off-by: Ronald Claveau <linux-kernel-dev at aliel.fr>
> ---
* Through which tree this patch should go ? (assuming there is a
dependency on other patches)
* How this will behave with 100 levels with the step wise governor ?
For a 100ms passive delay and 100 states, it will take 10s before
reaching the full speed
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