Changes between Version 7 and Version 8 of malibu/gw3089gblade

Timestamp:

04/14/2023 08:56:17 PM (3 years ago)

Author:

Ryan Erbstoesser

Comment:

add more thermal

malibu/gw3089gblade

@@ -49 +49 @@
 == LED
 
-A front panel LED is supported
+A front panel LED is supported.
 
-== Cooling Fan
+When power is applied, the LED will be a solid green. 
 
-The fan runs at specific setpoints.
-Note also the processor will throttle down if the fan isn't able to achieve proper cooling. 
+The LED will present a green heartbeat pattern is shown once the board is booted into Linux.
+
+To disable the heartbeat LED:
+{{{
+root@jammy-malibu:~# echo none > /sys/class/leds/green\:heartbeat/trigger #disable default green heartbeat
+root@jammy-malibu:~# echo 255 > /sys/class/leds/red\:status/brightness #set LED to solid RED
+}}}
+
+To see more Linux LED examples, see here: [wiki:linux/led]
+
+== Thermal & Cooling Fan
+
+The fan runs at specific set points.
+The trip points are set at 50C, 60C and 80C (as shown in the device tree [https://github.com/Gateworks/linux-malibu/blob/v6.1-malibu/arch/arm64/boot/dts/marvell/cn9130-malibu-gw8901.dts#L413 here])
+
+Note also the processor will throttle down if the fan isn't able to achieve proper cooling with the fan.
+
+The GW8901 uses standard Linux cooling-maps, thermal-zones and the pwm-fan driver.
+
+There are several temperature sensors on the board, identified as 'thermal_zones'.
+These are shown in Linux under /sys/class/thermal:
+{{{
+root@jammy-malibu:~# ls -la /sys/class/thermal/
+total 0
+drwxr-xr-x  2 root root 0 Jun 27 18:28 .
+drwxr-xr-x 62 root root 0 Jun 27 18:28 ..
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 cooling_device0 -> ../../devices/virtual/thermal/cooling_device0
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 cooling_device1 -> ../../devices/virtual/thermal/cooling_device1
+lrwxrwxrwx  1 root root 0 Jun 27 18:31 cooling_device2 -> ../../devices/virtual/thermal/cooling_device2
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone0 -> ../../devices/virtual/thermal/thermal_zone0
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone1 -> ../../devices/virtual/thermal/thermal_zone1
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone2 -> ../../devices/virtual/thermal/thermal_zone2
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone3 -> ../../devices/virtual/thermal/thermal_zone3
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone4 -> ../../devices/virtual/thermal/thermal_zone4
+lrwxrwxrwx  1 root root 0 Jun 27 18:28 thermal_zone5 -> ../../devices/virtual/thermal/thermal_zone5
+
+}}}
+
+An example temperature for thermal_zone0 would be 60738, or 60738/1000=60.738 degrees Celsius:
+{{{
+root@jammy-malibu:~# cat /sys/class/thermal/thermal_zone0/temp 
+60738
+}}}
+
+The zones are labeled below. The AP stands for application processor, or the main CPU, with a sensor for each core of the quad core CPU. The CP0 stands for 'co-processor'. 
+{{{
+root@jammy-malibu:~# cat /sys/class/thermal/thermal_zone*/type
+ap-thermal-ic
+ap-thermal-cpu0
+ap-thermal-cpu1
+ap-thermal-cpu2
+ap-thermal-cpu3
+cp0-thermal-ic
+
+}}}
+
+
 
 == 1U Rack Front Plate