DRA74P: How can I power off 1 GPU core of TDA2x or TDA2Px

Hi Shiju,

DRA74x / DRA75x SoCs have SGX544MP2 GPU with 2 cores while DRA71x / DRA72x SoCs has SGX544MP1 GPU with 1 core. By default, depending on the SoC version, the relevant number of GPU cores are configured.

On DRA74x / DRA75x, 2 GPU cores are configured by default. Sometimes, we may want to measure / simulate the graphics performance with a single GPU core on DRA74x / DRA75x SoCs. In those cases, we can turn off one of the GPU cores by updating the /etc/powervr.ini file on target file system as follows. Save the file and restart the EVM for changes to take effect.

[default]
CoresEnabled=1

The best way to validate is to measure performance using some graphics benchmark. Note that increasing this value beyond what is actually available in Hardware will lead to an assert failure.

Regards,
Anand