arm64: dts: freescale: imx93-phyboard-nash: Add pwm-fan overlay

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Add overlay to support PWM fan on the phyBOARD-Nash-i.MX93 board. Fan
can be connected to the FAN (X48) connector on the board and will be
controlled according to the following CPU temperature trips table:

 - bellow 50 degrees - fan is off (<1% duty cycle)
 - between 50 and 58 degrees - low fan speed (~35% duty cycle)
 - between 58 and 65 degrees - fan medium speed (~60% duty cycle)
 - above 65 degrees - fan at full speed (>99% duty cycle)

The output frequency of PWM signal is set to 25 kHz.

Signed-off-by: Primoz Fiser <primoz.fiser@norik.com>
Reviewed-by: Alberto Merciai <alb3rt0.m3rciai@gmail.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

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Primoz Fiser 2025-10-28 12:58:20 +01:00 • committed by Shawn Guo

parent af21bfd1f7

commit 09b33db32e

2 changed files with 77 additions and 0 deletions

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arch/arm64/boot/dts/freescale/Makefile

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75

arch/arm64/boot/dts/freescale/imx93-phyboard-nash-pwm-fan.dtso

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