On 3/20/26 08:29, florin.leotescu@oss.nxp.com wrote:
> From: Florin Leotescu <florin.leotescu@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(+)
>