Orin nano: muxing DP1_AUX as I2C

[maxe777]

Hello,

On a custom based board, I would need to access an I2C peripheral connected to the Orin Nano module pins 98/100, that is to say DP1_AUX_N & DP1_AUX_P.

According to the pinmux config spreadsheet, it should be possible to get these pins the alternate function I2C6 (Address map: 0x31b0000).

However these pins seem to be a bit special (I found related posts, but on different platforms than t23x), and I was not able to get them driven from i2c commands so far. I suspect it requires some specific changes in the device tree.

Could you please provide some guidance?

[WayneWWW]

Does the pinmux spreadsheet give you any difference before and after you modify that pin in pinmux?

Did you remember to disable the display function before using the i2c?

[maxe777]

Hi @WayneWWW,

Thanks for your reply.
No, I will see to check with the spreadsheet. The display function should already be off - any special point you recommend to check about this?
FYI, the spreadsheet is not convenient for Linux users since it the macros do not run properly under LibreOffice.