| 90 | | The GW3089 uses the industrial temperature quad core Marvell CN9130 processor rated at 2.2GHz. The Tjunction for the processor is -40C to +105C. The GW3089 enclosure contains a built in CUI fan (model CUI CFM-4020BF-095-342-22) to keep the unit cool and provide airflow to the processor. |
| | 90 | The GW3089 uses the industrial temperature quad core Marvell CN9130 processor rated at 2.2GHz. The Tjunction rating for the processor is -40C to +105C. The GW3089 enclosure contains a built in CUI fan (model CUI CFM-4020BF-095-342-22) to keep the unit cool and provide airflow to the processor. When the unit first boots, the fan will turn on to full speed and then once Linux starts it will be under thermal control based on the processors AP core temperature. |
| | 91 | |
| | 92 | 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. |
| | 93 | |
| | 94 | The PWM values for the four default set points are as follows: |
| | 95 | |
| | 96 | Fan Off < 50C |
| | 97 | Fan On 40% PWM = 50C to 60C |
| | 98 | Fan On 67% PWM = 60C to 80C |
| | 99 | Fan On 100% PWM > 80C |
| | 100 | |
| | 101 | These can be adjusted through the device tree if required. |
