Question about GPIO09 usage conflict with the ethO phy reset signal

Autonomous Machines Jetson & Embedded Systems Jetson Xavier NX
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1

Hello:
we have got a problem with our customized carrier which has an audio codec that need config GPIO09 as MCLK , but we also want o make the SOM RTL8211 PHY RESET pin not impact as we want both of these two component workings well.

Any idea we can both make them working normally? thanks

Stephen

2

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3

as above NX design guide , both Audio codec and GBE PHY use GPIO09 , how can we make a custermized carrier board with Audio codec and also make SOM’s PHY RST working at same time ? thanks for advance

5

I think i confuse about the SOC_GPIO09 and GPIO09 on the pinmux table , it is diffrent

SOC_GPIO09 is a name from SOC itself, GPIO09 is pin name of 260 SODIMM golden finger pin name , it is not conflict .
right?

6

Yes, they are different. GPIO09 of SODIMM is AUD_MCLK only. No need to care about the RST of Ethernet PHY in the module. They can be used simultaneously.

7

Thanks a lot , please close this thread