LTC Connector DE10-Standard FPGA

Hi greenlantern01,

Really sorry for the delay in getting back, was going through my mails after back to office , missed out on the notification.   

From the screenshot, seems it is resetting during kernel loading stage, probably some settings in the dts.

I was checking back on Terasic schematic and notice that there is some differences between DE10-Standard Rev C and Rev D board. Could you help confirm you board revision ( i suppose to be rev C because in schematic I still see the digital accelerometer and HPS_LTC_GPIO connected to TS3A5018, Rev D schematic all these been removed)

Anyway if you're on Rev C, disregard the DTS changes you made first, and

1. Measure the HPS_LTC_GPIO ( can probe R306 resistor and check whether it toggles or switch just to check the pin logic )

I got this from the TS3A5018 datasheet (but the table here seems to indicate the other way round for NO/NC)

From schematic, Gsensor/ digital accelerometer is connected to I2C1 which looks like it is connected to different pin all together , not via TS3A5018 , thus you always can talk to Gsensor regardless of the LTG connector.

After verifying the LTC_GPIO toggles correctly, probably can check whether Linux side have these i2C drivers already initialized, if yes maybe no need add the i2c2 in the DTS for linux-socfpga

Try this command to list the i2c :   i2cdetect -l

You should see something like Synopsys DesignWare

scan the bus to see whether gsensor and your ltc shows up

i2cdetect -y -r <bus number from the list, 0,1,2>

This one to confirm that i2c has gsensor and your LTC device connected.

Thanks

Regards

Kian