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Merge branch 'pr-19/helios-4/wiki_update'

This commit is contained in:
Gauthier Provost 2019-07-27 11:30:35 +08:00
parent 81b7b26369 e20d3f7f1c
commit 5dc49cfba4
2 changed files with 29 additions and 27 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";
};

11
docs/sdcard.md
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@ -15,6 +15,9 @@ However, it is not compatible with all cards even though the SD cards are declar
!!! Warning
Enabling High Speed and UHS-I support could lead to unbootable system because of incompatible microSD card.
!!! Important
From *Linux Kernel 4.19* onwards, High Speed and UHS-I modes for Helios4 do NOT work. It requires further work on our side.
## Device Tree Modification
To enable High Speed mode and UHS-I support, Helios4 device tree need to be modified.
@ -30,12 +33,11 @@ Install the dependencies and extract the source into ~/src/linux
```
sudo apt-get -y install build-essential linux-source-4.14.87-next-mvebu
mkdir -p ~/src/linux
tar Jxf /usr/src/linux-source-4.14.87-mvebu.tar.xz -C ~/src/linux
tar Jxf /usr/src/linux-source-$(uname -r).tar.xz -C ~/src/linux
```
!!! note
You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -a**
You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -r**.
### Patching and Compilation
@ -51,6 +53,7 @@ git apply --apply --verbose helios4_dtb_sd_uhs_linux_stable.patch
Compile the device tree into dtb
```
cp /boot/config-$(uname -r) .config
make armada-388-helios4.dtb
cp arch/arm/boot/dts/armada-388-helios4.dtb armada-388-helios4.dtb.uhs
```
@ -118,7 +121,7 @@ To automate the test, a test script named [run_sdcard_test.sh](/files/sdcard/run
**3.** Install iozone and download the test script
```
sudo apt-get -y install iozone
sudo apt-get -y install iozone3
wget https://wiki.kobol.io/files/sdcard/run_sdcard_test.sh
chmod 755 run_sdcard_test.sh