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PWM: Update hwmon device list and configuration 

The changes on recent Armbian with LK 4.14 and LK 4.19 make the hwmon
device order changed. pwm-fan become hwmon3 & hwmon4 and board temp
sensor become hwmon2.

Also sync the fancontrol configuration with the one on Armbian.
This commit is contained in:
Aditya Prayoga 2019-07-26 15:50:52 +08:00
parent dcec2456f5
commit 127f60b787
1 changed files with 22 additions and 23 deletions
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45
docs/pwm.md
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@ -143,12 +143,11 @@ List of devices can be checked under /sys/class/hwmon
```
ls -l /sys/class/hwmon/
total 0
lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon0 -> ../../devices/platform/soc/soc:internal-regs/f1072004.mdio/mdio_bus/f1072004.mdio-mii/f1072004.mdio-mii:00/hwmon/hwmon0
lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon1 -> ../../devices/virtual/hwmon/hwmon1
lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon2 -> ../../devices/platform/j10-pwm/hwmon/hwmon2
lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon3 -> ../../devices/platform/j17-pwm/hwmon/hwmon3
lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon4 -> ../../devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c/hwmon/hwmon4
lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon0 -> ../../devices/platform/soc/soc:internal-regs/f1072004.mdio/mdio_bus/f1072004.mdio-mii/f1072004.mdio-mii:00/hwmon/hwmon0
lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon1 -> ../../devices/virtual/thermal/thermal_zone0/hwmon1
lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon2 -> ../../devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c/hwmon/hwmon2
lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon3 -> ../../devices/platform/j10-pwm/hwmon/hwmon3
lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon4 -> ../../devices/platform/j17-pwm/hwmon/hwmon4
```
!!! info
@ -157,20 +156,20 @@ lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon4 -> ../../devices/platform/soc/soc:i
To identify which hwmon belong to fan, look for *j10-pwm* and *j17-pwm*. On above example
```
hwmon2 -> ../../devices/platform/j10-pwm/hwmon/hwmon2
hwmon3 -> ../../devices/platform/j17-pwm/hwmon/hwmon3
hwmon3 -> ../../devices/platform/j10-pwm/hwmon/hwmon3
hwmon4 -> ../../devices/platform/j17-pwm/hwmon/hwmon4
```
To read current PWM
```
cat /sys/class/hwmon2/pwm1
cat /sys/class/hwmon3/pwm1
cat /sys/class/hwmon4/pwm1
```
To set PWM
```
echo NEW_PWM_VALUE > /sys/class/hwmon2/pwm1
echo NEW_PWM_VALUE > /sys/class/hwmon3/pwm1
echo NEW_PWM_VALUE > /sys/class/hwmon4/pwm1
```
### Fancontrol - automated software based fan speed control
@ -196,13 +195,13 @@ fancontrol uses **/etc/fancontrol** as configuration file. Below is an example c
# Helios4 PWM Fan Control Configuration
# Temp source : armada_thermal sensor
INTERVAL=10
DEVPATH=hwmon2=devices/platform/j10-pwm hwmon3=devices/platform/j17-pwm hwmon4=devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c
DEVNAME=hwmon1=armada_thermal
FCTEMPS=hwmon2/pwm1=hwmon1/temp1_input hwmon3/pwm1=hwmon1/temp1_input
MINTEMP=hwmon2/pwm1=60 hwmon3/pwm1=60
MAXTEMP=hwmon2/pwm1=80 hwmon3/pwm1=80
MINSTART=hwmon2/pwm1=20 hwmon3/pwm1=20
MINSTOP=hwmon2/pwm1=29 hwmon3/pwm1=29
DEVPATH=hwmon3=devices/platform/j10-pwm hwmon4=devices/platform/j17-pwm hwmon2=devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c
DEVNAME=hwmon1=f10e4078.thermal
FCTEMPS=hwmon3/pwm1=hwmon1/temp1_input hwmon4/pwm1=hwmon1/temp1_input
MINTEMP=hwmon3/pwm1=40 hwmon4/pwm1=40
MAXTEMP=hwmon3/pwm1=80 hwmon4/pwm1=80
MINSTART=hwmon3/pwm1=20 hwmon4/pwm1=20
MINSTOP=hwmon3/pwm1=29 hwmon4/pwm1=29
MINPWM=20
```
@ -226,7 +225,7 @@ FCTEMPS
Maps PWM outputs to temperature sensors so fancontrol knows which temperature sensors should be used for calculation of new values for the corresponding PWM outputs.
Fans (**hwmon2** & **hwmon3**) are controlled based on CPU thermal sensor (**hwmon1**) reading.
Fans (**hwmon3** & **hwmon4**) are controlled based on CPU thermal sensor (**hwmon1**) reading.
MINSTART
@ -248,13 +247,13 @@ MINTEMP
The temperature below which the fan gets switched to minimum speed.
Fans (hwmon2 & hwmon3) runs in minimum speed if the CPU temperature below **70** degree C.
Fans (hwmon2 & hwmon3) runs in minimum speed if the CPU temperature below **40** degree C.
MAXTEMP
The temperature over which the fan gets switched to maximum speed.
Fans (hwmon2 & hwmon3) runs in maximum speed if the CPU temperature above **90** degree C.
Fans (hwmon2 & hwmon3) runs in maximum speed if the CPU temperature above **80** degree C.
MINPWM
@ -264,7 +263,7 @@ Set minimum PWM value to **0**. On Type-C fan, it would stopped the fan while on
!!! note
The Helios4 fancontrol configuration file can be found [here](https://raw.githubusercontent.com/armbian/build/master/packages/bsp/helios4/fancontrol_pwm-fan-mvebu-next.conf).
The Helios4 fancontrol configuration file can be found [here](https://raw.githubusercontent.com/armbian/build/master/packages/bsp/helios4/fancontrol_pwm-fan.conf).
### Thermal Zone on Device Tree
@ -305,14 +304,14 @@ Below is an example of device tree nodes that can be added to Helios4 device tre
trips {
cpu_active: cpu_active {
/* millicelsius */
temperature = <70000>;
temperature = <40000>;
hysteresis = <2000>;
type = "active";
};
cpu_alert: cpu_alert {
/* millicelsius */
temperature = <90000>;
temperature = <80000>;
hysteresis = <2000>;
type = "hot";
};