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Hi TI team,
I am facing an issue while defining the GPIO direction as output. I am using GPIO2_5 as the LAN PHY reset, which is one of the inputs of the 7UL1T80FU AND logic IC. This pin operates at 1.8V, while the second input and output pins operate at 3.3V.
Commands:
- `$ echo 69 > /sys/class/gpio/export`
- `$ echo out > /sys/class/gpio/gpio69/direction
Device tree configuration:
...
I have applied an internal pull-up, but when I define this pin's direction as output, it immediately goes low, triggering the PHY reset. Could you please help me ensure that this pin remains high whenever I define its direction as output?
Thank you.
Hello,
What SDK version are you using?
I'll try to do some testing on my setup to replicate this behavior. Please allow a few days to follow up.
Best Regards,
Anshu
Hi Jins,
Can you please try to se the pin to '1' before setting the 'out' direction to see if this resolves the issue?
Hi Jins,
Thank you for your patience. I've recreated the behavior but I haven't found a solution yet.
Ping this thread if you don't hear back next week.
Best Regards,
Anshu
Hi Jins,
Thanks for your patience. Instead of 'echo out > /sys/class/gpio/gpio69/direction', can you try 'echo high > /sys/class/gpio/gpio69/direction'? You can also try low just in case.
Best Regards,
Anshu
Hi Anshu,
Thank you for the support. It worked . I request you to kindly close this support ticket