I have earlier worked with BBB PRUs, However with new BB AI64, it seems quite complicated.
I have followed steps as discussed in here. The issues I felt are following.
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“vi /opt/source/dtb-5.10-ti-arm64/src/arm64/k3-j721e-beagleboneai64.dts” the mentioned loaction was not found it was someting like “/opt/source/dtb-5.10-ti/src/arm64/k3-j721e-beagleboneai64-bone-buses.dtsi”
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I edited the dtsi file as mentioned to enable PRU GPIO functionalitites.
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Tried to run example code as suggested above, however, it prompted with error : cannot find file j721E_PRU0.cmd, no input section is linked in