TDA4VM: For estimation of power consumption

Hi,

Can you share the output of the below command:

Cat /sys/class/gpio/*

I want to check the goiochip that corresponds to 601000.gpio.

The number of the gpiochip will need to be exported to control gpio1_0.

Also any changes you have made w.r.t gpio on top of SDK?

Best Regards,

Keerthy 

1. Output of the command

root@tda4vm-sk:/opt/edgeai-gst-apps# cat /sys/class/gpio/*
cat: /sys/class/gpio/export: Permission denied
cat: /sys/class/gpio/gpiochip264: Is a directory
cat: /sys/class/gpio/gpiochip300: Is a directory
cat: /sys/class/gpio/gpiochip428: Is a directory
cat: /sys/class/gpio/unexport: Permission denied

2. No changes made w.r.t gpio on top of SDK

Hi,

Typically we see "Device or resource busy" When it is already hogged by by some dts node.
Have you made any changes in dts?

I believe you are using a TI EVM & can you confirm which SDK version is being used?

Also you can check if the gpio264 is used already with the below command:

'cat /sys/kernel/debug/gpio'

- Keerthy

1. SDKVersion- 08.06.00.11 

No changes made in dts

2.command output

root@tda4vm-sk:/sys/kernel# cat /sys/kernel/debug/gpio
gpiochip2: GPIOs 264-299, parent: platform/601000.gpio, 601000.gpio:
gpio-264 ( |hpd ) in hi
gpio-267 ( |typec-dir ) in hi

gpiochip1: GPIOs 300-427, parent: platform/600000.gpio, 600000.gpio:
gpio-365 ( |standby ) out hi
gpio-366 ( |standby ) out hi
gpio-367 ( |standby ) out hi
gpio-372 ( |reset ) out hi
gpio-411 ( |fixedregulator-dp-pr) out hi
gpio-427 ( |powerdown ) out hi ACTIVE LOW

gpiochip0: GPIOs 428-511, parent: platform/42110000.gpio, 42110000.gpio:
gpio-431 ( |standby ) out hi
gpio-436 ( |fixedregulator-sd ) out lo
gpio-437 ( |tps659411 ) out lo
gpio-439 ( |reset ) out hi

Regards,

Nandu

Hi, 

SK-TDA4VM evaluation board is the one trying to find power measurement.

So there is no way to find power measurement???If any method plz reply..

Regards,

Nandu

Hi,

I will let my hardware design expert comment on this.

- Keerthy

OK 

Can u please tell the estimated time required for getting the reply from them

Regards

Nandu

There is no power measurement integrated into the SK-TDA4VM.  It is included in the TDA4VM EVM.  What type of power measurement are you requesting?  Overall power of the board can be measured using a lab bench supply.  Do you need power for specific voltage rails?

I need to check watt consumption during an inference process(like object detection) and normal board running condition in 

J721EXSKG01EVM (SK-TDA4VM)

If any method plz reply..

-Nandu

We have no on-board power measurement capability.  You can use an external supply will power measurement (lab bench DC supply) to monitor the power consumption of the entire EVM.