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AM437x I2C1 issue on Pinmux tool

Hello there,

I find out a trick of PinMux Tool for AM437x I2C1.
I can see the IOSets while I creat a I2C1 device on PinMux Tool.
Tool show up the I2C1_IOSet_7 is usinng T23 for I2C1_SCL and N20 for I2C1_SDA.


Then I went back to select the T23 for I2C1_SCL, there is no T23 can select in I2C1_SCL dropdown menu.


Is there anythhing wrong?
I try TI Cloud PinMux and offline PinMux ver. 3.0.625, got the same result.

Best Regards
Wayne Kuo