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| author | Naresh Solanki <[email protected]> | 2025-04-04 11:56:45 +0000 |
|---|---|---|
| committer | Guenter Roeck <[email protected]> | 2025-04-23 14:18:27 +0000 |
| commit | 6de6868df18728790eb4ffe764b49f356fea7397 (patch) | |
| tree | 6c0ac375e974ea9449890ab5926168fba803e640 /drivers/hwmon/pwm-fan.c | |
| parent | hwmon: (pmbus) Do not set regulators_node for single-channel chips (diff) | |
| download | kernel-6de6868df18728790eb4ffe764b49f356fea7397.tar.gz kernel-6de6868df18728790eb4ffe764b49f356fea7397.zip | |
hwmon: (max6639) Allow setting target RPM
Currently, during startup, the fan is set to its maximum RPM by default,
which may not be suitable for all use cases.
This patch introduces support for specifying a target RPM via the Device
Tree property "target-rpm".
Changes:
- Added `target_rpm` field to `max6639_data` structure to store the
target RPM for each fan channel.
- Modified `max6639_probe_child_from_dt()` to read the `"target-rpm"`
property from the Device Tree and set `target_rpm` accordingly.
- Updated `max6639_init_client()` to use `target_rpm` to compute the
initial PWM duty cycle instead of defaulting to full speed (120/120).
Behavior:
- If `"target-rpm"` is specified, the fan speed is set accordingly.
- If `"target-rpm"` is not specified, the previous behavior (full speed
at startup) is retained.
This allows better control over fan speed during system initialization.
Signed-off-by: Naresh Solanki <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>
Diffstat (limited to 'drivers/hwmon/pwm-fan.c')
0 files changed, 0 insertions, 0 deletions