Hello and thanks for your reply.

as it turns out I had a pin conflict on pin 49.  The following lead me to 
believe that nothing else was loaded and I should be good to go.

root@beaglebone:~# cat $SLOTS

0: PF----  -1

1: PF----  -1

2: PF----  -1

3: PF----  -1
4: P-O-L-   0 Override Board Name,00A0,Override Manuf,BB-UART2

dmesg showed there was a conflict with the pins and cat 
/sys/kernel/debug/pinctrl/44e10800.pinmux/pingroups showed the conflict 
wiht nxp_hdmi_bonelt_pins

I changed my /boot/uEnv.txt to disable HDMI:
##BeagleBone Black: HDMI (Audio/Video) disabled:
dtb=am335x-boneblack-emmc-overlay.dtb

and it is now working.  thanks again for your support.  

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