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DESK-MX9-L/Deployment/Power Manager

566 bytes added, 2 April
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regulators {
buck1: BUCK1 {
regulator-name = "BUCK1"; regulator-min-microvolt = <600000>; regulator-max-microvolt = <2187500>; regulator-boot-on; regulator-always-on; regulator-ramp-delay = <3125>;...
};
...
By default on <code>Aura SOM</code> this modalities are disabled.
'''Attention''': if you want to add this modalities check if you must change the <code>clock rate </code> of the other peripherals like:
* <code>flexspi1</code> to <code>266000000</code>.
* <code>usdhc1</code> to <code>266000000</code>.
898 MHz, 1.1136 nanosec clock
</pre>
 
=== Operational Mode ===
The typical operating modes envisaged are:
- * Quiet-normal (LPM: Over drive)- * Quiet-nominal (LPM: Nominal drive)- * Stressed-normal (LPM: Over drive)- * Stressed-nominal (LPM: Nominal drive)- * Suspend- * Freeze
==== Quiet-normal (LPM: Over drive) Setup ====
the The measurements were performed with follow device connected to the board (Only the most energy-intensive devices are listed).
* Eth0 interface up.
* Eth1 interface up.
* uSD.
* DSI-HDMI converter and HDMI display up.
 
===== Quiet =====
 
On quiet the core nt have any additional process/task.
 
===== Stressed =====
 
To simulate high consumption, the following energy-intensive operations were performed:
* configured the both eth interface and execute an endless iperf3 with an external server support
* use the camera and stream it to the HDMI display
* execute the <code>sat</code>, is a specialized executable to stress the SOC and RAM memory
 
Then there are four energy-intensive operations.
 
==== Measurements ====
{| class="wikitable"
!Mode
!Caduta misurataCurrent!CorrentePower!PotenzaDiff Normal!DiffStress
|-
|'''Normal modeQuiet-normal (LPM: Over drive)'''|5.0 mV|0,5 A|1.65 W|refNormal reference| -50% (Reference: <code>Stressed-normal (LPM: Over drive)</code>)
|-
|'''Low power modeQuiet-nominal (LPM: Nominal drive)'''|4.69 mV|0.469 A
| 1.55 W
| -6 %
| -32% (Reference: <code>Stressed-nominal (LPM: Nominal drive)</code>)
|-
| '''Stressed-normal (LPM: Over drive)'''
| 0.75 A
| 2.475 W
| +50%
| Stress reference
|-
| '''Stressed-nominal (LPM: Nominal drive)'''
| 0.469 A
| 1.55 W
| +24%
| -17 %
|-
|'''Suspend to RAM'''|0.46 mV|0.046 A|0.152 W
| -91 %
| -93 %
|-
|'''Freeze'''
|1.79 mV
|0.179 A
|0.59 W
| -64 %
| -76 %
|}
 
 
 
uso normale
standby mode
uso sotto stress
LDM attivo (1)
normale
sotto stress
 
<section end=Body/>
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