Changes
Outdated. See [[AMD: Installing Linux Mint 19]]
== Prepare installation media ==
* A USB DVD-ROM drive or a USB Flash drive of at least 2GB should be used as installation media
* Download [http://www.linuxmint.com/edition.php?id=174 190 Linux Mint 17 .2 "RebeccaRafaela" - MATE Cinnamon (64-bit)"]
* For installation with a USB DVD-ROM - flash the downloaded image directly onto a DVD
* For installation with a USB Flash drive, please follow [http://community.linuxmint.com/tutorial/view/744 How to install Linux Mint via USB] tutorial
== Thermal monitoring ==
* Install tools for monitoring CPU and storage temperature
$ sudo apt-get install lm-sensors hddtemp
== Aggressive Link Power Management (ALPM) ==
* It's a mechanism where a SATA controller can put the disk into a very low power mode during periods of zero I/O activity and into an active power state when work needs to be done. Tests show that this can save around 0.4 Watts of some power and decrease mSATA average temperature.
* Create text file /etc/pm/power.d/sata_alpm
#!/bin/sh
* Make it executable
$ sudo chmod +x /etc/pm/power.d/sata_alpm
* Reboot, check that SATA power management policy have has been changed
$ cat /sys/class/scsi_host/host*/link_power_management_policy
min_power
min_power
== Watchdog ==
* '''NOTE!''' Not supported in mainline Linux kernel yet. [[Fitlet:_Linux:_Kernel:_3.16 | Linux Kernel 3.16 for Fitlet]] should be installed to make this feature work
* The AMD FCH (Fusion Controller Hub) supports a user configurable watchdog
* Once the watchdog is enabled the system restarts once the timeout period elapses, in order to prevent it the user needs to either feed the watchdog or to disable it
$ sudo apt-get install watchdog
* Uncomment watchdog-device line in /etc/watchdog.conf
watchdog-device = /dev/watchdog
* Set responsible kernel module to sp5100_tco in /etc/default/watchdog
watchdog_module="sp5100_tco"
* By default the timeout value is 60 sec and the watchdog deamon feeds the watchdog every 10 sec
* As example you can simulate kernel panic (as root user):
$ echo c > /proc/sysrq-trigger
* As a result, the watchdog is not fed and the system will reboot after 60 sec
== GPIO ==* '''NOTE!''' Not supported in mainline Linux kernel. [[categoryFitlet:fitlet_Linux:_Kernel:_3.16 | Linux Kernel 3.16 for Fitlet]]should be installed to make this feature work* GPIO interface on fitlet consists of 9 GPIOs provided by AMD FCH (Fusion Controller Hub)* The responsible kernel module is gpio_fch* The kernel module uses the following pin naming convention: {| cellpadding="3" border="1" style="border: 1px solid rgb(85, 85, 85); border-collapse: collapse;"|+ GPIO connector pinout|-| Pin Number| Color Code| GPIO name| Power domain| HW source| Notes|-| 1| Brown| GPIO89| 3.3V| SoC| |-| 2| Red| GPIO132| 3.3V| SoC||-| 3| Orange| GPIO65| 3.3V| SoC||-| 4| Yellow| GPIO66| 3.3V| SoC||-| 5| Green| GPIO29| 1.5V| Soc||-| 6| Blue| I2C Clock| 3.3V| SoC| |-| 7| Purple| I2C Data| 3.3V| SoC| |-| 8| Grey| GPIO73| 3.3V| SoC||-| 9| White| GPIO27| 1.5V| SoC||-| 10| Black| GPIO28| 1.5V| SoC||-| 11| Brown| GPIO12| 3.3V| SoC||-| 12| Red| UART Rx| 3.3V| SuperIO| |-| 13| Orange| UART Tx| 3.3V| SuperIO| |-| 14| Yellow| | | GND| |} * The GPIO sysfs interface allows users to manipulate any GPIO from userspace dynamically.* A basic example of GPIO P-1 (Brown) usage (as root user): $ modprobe fch_gpio $ echo 89 > /sys/class/gpio/export $ echo out > /sys/class/gpio/gpio89/direction $ echo 1 > /sys/class/gpio/gpio89/value ## at this point voltage measuring on P-1 (Brown) should give 3.3V $ echo 0 > /sys/class/gpio/gpio89/value ## at this point voltage measuring on P-1 (Brown) should give 0.0V $ echo 89 > /sys/class/gpio/unexport * The GPIO framework and GPIO sysfs interface are documented in https://www.kernel.org/doc/Documentation/gpio/gpio.txt
