Merge branch 'pr-19/helios-4/wiki_update'
This commit is contained in:
Gauthier Provost
commit
5dc49cfba4
2 changed files with 29 additions and 27 deletions
45
docs/pwm.md
45
docs/pwm.md
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@ -143,12 +143,11 @@ List of devices can be checked under /sys/class/hwmon
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```
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ls -l /sys/class/hwmon/
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total 0
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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
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lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon1 -> ../../devices/virtual/hwmon/hwmon1
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lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon2 -> ../../devices/platform/j10-pwm/hwmon/hwmon2
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lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon3 -> ../../devices/platform/j17-pwm/hwmon/hwmon3
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lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon4 -> ../../devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c/hwmon/hwmon4
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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
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lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon1 -> ../../devices/virtual/thermal/thermal_zone0/hwmon1
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lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon2 -> ../../devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c/hwmon/hwmon2
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lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon3 -> ../../devices/platform/j10-pwm/hwmon/hwmon3
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lrwxrwxrwx 1 root root 0 Jul 26 07:39 hwmon4 -> ../../devices/platform/j17-pwm/hwmon/hwmon4
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```
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!!! info
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@ -157,20 +156,20 @@ lrwxrwxrwx 1 root root 0 Nov 7 07:23 hwmon4 -> ../../devices/platform/soc/soc:i
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To identify which hwmon belong to fan, look for *j10-pwm* and *j17-pwm*. On above example
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```
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hwmon2 -> ../../devices/platform/j10-pwm/hwmon/hwmon2
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hwmon3 -> ../../devices/platform/j17-pwm/hwmon/hwmon3
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hwmon3 -> ../../devices/platform/j10-pwm/hwmon/hwmon3
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hwmon4 -> ../../devices/platform/j17-pwm/hwmon/hwmon4
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```
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To read current PWM
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```
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cat /sys/class/hwmon2/pwm1
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cat /sys/class/hwmon3/pwm1
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cat /sys/class/hwmon4/pwm1
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```
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To set PWM
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```
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echo NEW_PWM_VALUE > /sys/class/hwmon2/pwm1
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echo NEW_PWM_VALUE > /sys/class/hwmon3/pwm1
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echo NEW_PWM_VALUE > /sys/class/hwmon4/pwm1
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```
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### Fancontrol - automated software based fan speed control
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@ -196,13 +195,13 @@ fancontrol uses **/etc/fancontrol** as configuration file. Below is an example c
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# Helios4 PWM Fan Control Configuration
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# Temp source : armada_thermal sensor
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INTERVAL=10
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DEVPATH=hwmon2=devices/platform/j10-pwm hwmon3=devices/platform/j17-pwm hwmon4=devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c
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DEVNAME=hwmon1=armada_thermal
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FCTEMPS=hwmon2/pwm1=hwmon1/temp1_input hwmon3/pwm1=hwmon1/temp1_input
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MINTEMP=hwmon2/pwm1=60 hwmon3/pwm1=60
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MAXTEMP=hwmon2/pwm1=80 hwmon3/pwm1=80
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MINSTART=hwmon2/pwm1=20 hwmon3/pwm1=20
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MINSTOP=hwmon2/pwm1=29 hwmon3/pwm1=29
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DEVPATH=hwmon3=devices/platform/j10-pwm hwmon4=devices/platform/j17-pwm hwmon2=devices/platform/soc/soc:internal-regs/f1011000.i2c/i2c-0/0-004c
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DEVNAME=hwmon1=f10e4078.thermal
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FCTEMPS=hwmon3/pwm1=hwmon1/temp1_input hwmon4/pwm1=hwmon1/temp1_input
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MINTEMP=hwmon3/pwm1=40 hwmon4/pwm1=40
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MAXTEMP=hwmon3/pwm1=80 hwmon4/pwm1=80
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MINSTART=hwmon3/pwm1=20 hwmon4/pwm1=20
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MINSTOP=hwmon3/pwm1=29 hwmon4/pwm1=29
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MINPWM=20
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```
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@ -226,7 +225,7 @@ FCTEMPS
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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.
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Fans (**hwmon2** & **hwmon3**) are controlled based on CPU thermal sensor (**hwmon1**) reading.
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Fans (**hwmon3** & **hwmon4**) are controlled based on CPU thermal sensor (**hwmon1**) reading.
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MINSTART
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@ -248,13 +247,13 @@ MINTEMP
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The temperature below which the fan gets switched to minimum speed.
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Fans (hwmon2 & hwmon3) runs in minimum speed if the CPU temperature below **70** degree C.
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Fans (hwmon2 & hwmon3) runs in minimum speed if the CPU temperature below **40** degree C.
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MAXTEMP
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The temperature over which the fan gets switched to maximum speed.
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Fans (hwmon2 & hwmon3) runs in maximum speed if the CPU temperature above **90** degree C.
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Fans (hwmon2 & hwmon3) runs in maximum speed if the CPU temperature above **80** degree C.
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MINPWM
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@ -264,7 +263,7 @@ Set minimum PWM value to **0**. On Type-C fan, it would stopped the fan while on
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!!! note
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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).
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The Helios4 fancontrol configuration file can be found [here](https://raw.githubusercontent.com/armbian/build/master/packages/bsp/helios4/fancontrol_pwm-fan.conf).
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### Thermal Zone on Device Tree
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@ -305,14 +304,14 @@ Below is an example of device tree nodes that can be added to Helios4 device tre
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trips {
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cpu_active: cpu_active {
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/* millicelsius */
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temperature = <70000>;
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temperature = <40000>;
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hysteresis = <2000>;
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type = "active";
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};
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cpu_alert: cpu_alert {
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/* millicelsius */
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temperature = <90000>;
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temperature = <80000>;
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hysteresis = <2000>;
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type = "hot";
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};
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@ -15,6 +15,9 @@ However, it is not compatible with all cards even though the SD cards are declar
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!!! Warning
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Enabling High Speed and UHS-I support could lead to unbootable system because of incompatible microSD card.
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!!! Important
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From *Linux Kernel 4.19* onwards, High Speed and UHS-I modes for Helios4 do NOT work. It requires further work on our side.
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## Device Tree Modification
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To enable High Speed mode and UHS-I support, Helios4 device tree need to be modified.
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@ -30,12 +33,11 @@ Install the dependencies and extract the source into ~/src/linux
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```
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sudo apt-get -y install build-essential linux-source-4.14.87-next-mvebu
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mkdir -p ~/src/linux
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tar Jxf /usr/src/linux-source-4.14.87-mvebu.tar.xz -C ~/src/linux
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tar Jxf /usr/src/linux-source-$(uname -r).tar.xz -C ~/src/linux
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```
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!!! note
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You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -a**
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You will need to choose the right *linux-source* package that matches the kernel version you are running. Check kernel version with command **uname -r**.
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### Patching and Compilation
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@ -51,6 +53,7 @@ git apply --apply --verbose helios4_dtb_sd_uhs_linux_stable.patch
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Compile the device tree into dtb
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```
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cp /boot/config-$(uname -r) .config
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make armada-388-helios4.dtb
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cp arch/arm/boot/dts/armada-388-helios4.dtb armada-388-helios4.dtb.uhs
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```
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@ -118,7 +121,7 @@ To automate the test, a test script named [run_sdcard_test.sh](/files/sdcard/run
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**3.** Install iozone and download the test script
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```
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sudo apt-get -y install iozone
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sudo apt-get -y install iozone3
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wget https://wiki.kobol.io/files/sdcard/run_sdcard_test.sh
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chmod 755 run_sdcard_test.sh
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