What's rsvd_base?

I am following the Platform Adaptation Bring-Up Guide to use a custom board with my Jetson TX1. To export pinmux for U-Boot, I need to add the following to the csv-to-board.py file:

'<board>': {
 # <board>_pinmux.xlsm worksheet <board>
 'filename': 'csv/<board>.csv',
 'rsvd_0based': False,
 },

However, entries inside the file looks like:

'<board>': {
 # <board>_pinmux.xlsm worksheet <board>
 'filename': 'csv/<board>.csv',
 'rsvd_base': 0,
 'soc': 'tegra210',
 },

I am using a Jetson TX1. So I have added tegra210 as soc. But I am not sure what rsvd_base is and what value is to be assigned. Please guide.

Please assigned it as 0.

Okay. That’s what I have done. But where can I find a better understanding of this parameter?