Feature request: make Pi5 fan's cooling map customizable

[by]

Describe the bug

It would be great to be able to customize the cooling map of the Raspberry Pi5's fan (e.g., https://forums.raspberrypi.com/viewtopic.php?t=362528) as it is possible for the PoE HAT's fan for the Pi4.

Steps to reproduce the behaviour

N/A

Device (s)

Other

System

N/A

Logs

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Additional context

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[pelwell]

It's already on the to-do list.

[by]

Thank you!

[pelwell]

PR #5822 adds some controls:

        fan_temp0               Temperature threshold (in millicelcius) for
                                1st cooling level (default 50000). Pi5 only.
        fan_temp0_hyst          Temperature hysteresis (in millicelcius) for
                                1st cooling level (default 5000). Pi5 only.
        fan_temp0_speed         Fan PWM setting for 1st cooling level (0-255,
                                default 75). Pi5 only.
        fan_temp1               Temperature threshold (in millicelcius) for
                                2nd cooling level (default 60000). Pi5 only.
        fan_temp1_hyst          Temperature hysteresis (in millicelcius) for
                                2nd cooling level (default 5000). Pi5 only.
        fan_temp1_speed         Fan PWM setting for 2nd cooling level (0-255,
                                default 125). Pi5 only.
        fan_temp2               Temperature threshold (in millicelcius) for
                                3rd cooling level (default 67500). Pi5 only.
        fan_temp2_hyst          Temperature hysteresis (in millicelcius) for
                                3rd cooling level (default 5000). Pi5 only.
        fan_temp2_speed         Fan PWM setting for 3rd cooling level (0-255,
                                default 175). Pi5 only.
        fan_temp3               Temperature threshold (in millicelcius) for
                                4th cooling level (default 75000). Pi5 only.
        fan_temp3_hyst          Temperature hysteresis (in millicelcius) for
                                4th cooling level (default 5000). Pi5 only.
        fan_temp3_speed         Fan PWM setting for 4th cooling level (0-255,
                                default 250). Pi5 only.

If you wait about 45 minutes you'll be able to install a trial kernel (although it's really just the Pi 5 dtb and README that has changed) using sudo rpi-update pulls/5822.