I2C Pin Mapping in Jetson

How to know which header pins are mapped to which I2C bus? Is there a table which I can directly reference?
I referred to the pinmux excel sheet but that seems confusing to me. What is difference between signal name and customer usage. When I do i2cdetect -l, the bus list I get, how to know whether they are signal name or customer name and to which pin they are connected to?

Check the SFIO to subtract 1 to get software bus.
For example i2c9_clk that map to i2c8.

Thanks

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