[PATCH v4 0/2] hwmon: emc2305: Support configurable fan PWM at shutdown

[Guenter Roeck]

On 3/20/26 08:29, florin.leotescu at oss.nxp.com wrote:
> From: Florin Leotescu <florin.leotescu at nxp.com>
> 
> This series adds support for configuring the fan PWM duty cycle applied
> during system shutdown for the EMC2305 fan controller.
> 
> Some platforms require fans to transition to a predefined safe state
> during shutdown or reboot handoff until firmware or the next boot stage
> reconfigures the controller.
> 
> The new optional Device Tree property "fan-shutdown-percent" allows the
> shutdown PWM duty cycle to be configured per fan output.
> 

Sashiko stil finds some problems. Please check.

https://sashiko.dev/#/patchset/20260320152959.1575978-1-florin.leotescu%40oss.nxp.com

Thanks,
Guenter

> Changes in v4:
> - Initialize pwm_shudown array to EMC2305_PWM_SHUTDOWN_UNSET in probe,
>    to avoid treating unconfigured channels as valid and written 0
>    during shutdown
> Changes in v3:
> - Rebased on current upstream
> - Dropped already upstreamed of_node_put(child) fix
> Changes in v2:
> - Address feedback from Guenter Roeck
> - Make shutdown behavior configurable via Device Tree
> - Add optional fan-shutdown-percent property
> - Apply shutdown PWM only for channels defining the property
> 
> Florin Leotescu (2):
>    dt-bindings: hwmon: emc2305: Add fan-shutdown-percent property
>    hwmon: emc2305: Support configurable fan PWM at shutdown
> 
>   .../bindings/hwmon/microchip,emc2305.yaml     |  8 +++++
>   drivers/hwmon/emc2305.c                       | 35 +++++++++++++++++++
>   2 files changed, 43 insertions(+)
>