Changes between Version 24 and Version 25 of malibu/gw3089gblade


Ignore:
Timestamp:
04/18/2023 09:41:52 PM (14 months ago)
Author:
Ron Eisworth
Comment:

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  • malibu/gw3089gblade

    v24 v25  
    8888== Thermal & Cooling Fan
    8989
    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.
     90The 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
     92The 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
     94The PWM values for the four default set points are as follows:
     95
     96Fan Off < 50C
     97Fan On 40% PWM = 50C to 60C
     98Fan On 67% PWM = 60C to 80C
     99Fan On 100% PWM > 80C
     100
     101These can be adjusted through the device tree if required.
    91102
    92103Fan specifications:
     
    108119 * RoHS
    109120
    110 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.
     121
    111122
    112123The GW8901 uses standard Linux cooling-maps, thermal-zones and the pwm-fan driver.