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AM2634: lockstep selftest failed

Part Number: AM2634

I'm using teh example dcc_am263x-cc_r5fss0-0_nortos_ti-arm-clang to test lockstep using SDK version  am263x_10_02_00_13 

when I run the example on lunchpad I got the following result (I didn't edit the example)

[Cortex_R5_0] R5 CPU Application
CCM Example Test Started: R5F0
MCU ESM Initialization completed
CCM Test Init completed
CCM Verify Init completed
CCM Functional Test 
CCM self test: starting
CCM self test failed
CCM SelfTest: failure on line no. 337 

CCM Functional Test failed for CCM_R5F0 
CPU Functionality
 Failed.
Some tests have failed.