commit 209e52d3cdb2b6692002a04f6210f8a48c72d0b9
author developer <developer@mediatek.com> Thu Jun 30 11:32:57 2022 +0800
committer developer <developer@mediatek.com> Mon Jul 04 14:48:25 2022 +0800
tree 5be148eb8be246c5dd0a169864992286bee603c0
parent b3ce86f3fd3e2705c1bab0c91e2a19b2ece92708

[][MT7986a: Fix pwm fan support and update example cooling strategies]

[Description]
Add pwm fan support to mt7986a
example cooling strategies:
over 125  : reboot
120~125   : notify to driver callback (if callback function is set)
115~120   : FAN 100%
85~115    : FAN 50%
bellow 85 : FAN 0%

You need to connect the 'pwm' pin of PWM FAN to 'PWM1' (GPIO22) pin on mt7986,
and set 'status' properties of 'fan' node in the device tree to enable this.

[Release-log]
N/A

Change-Id: I220756e5ac8e154251943ca5d6a0303846b40195
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/6183410