The serial port uart0(H12,G12) isn’t work. we use the nvidia’s base board,and the dts about serial port is the same to nvidia. The uart3(H9,H10), uart1(D9,D10), uart2(B16,B15) all ok.
We found a check(test ?) point at U8,which is in the "P2597_C02_OrCAD_schematics.pdf", at page15, B3(COM1) . The pin always be low. And,I use "Jetson-TX2-Generic-Customer-Pinmux-Template.excel" to set H12 to GPIO3_PT_00(GPIO464), set G12 to GPIO3_PT_01(GPIO465). After enter ubuntu,I set these two pins to 1,but we use Oscilloscope to test it,there are always be low. May be I missed something?