P9.15 has pull conflict (Bug #155)


Added by Matthijs van Duin about 2 years ago. Updated about 2 years ago.


Status:New Start date:10/18/2015
Priority:Normal Due date:
Assignee:- % Done:

0%

Category:-
Target version:-

Description

P9.15 is connected to two pins of the am335x:
  • pin 16 / gpio 1.16 / pwm 1 trip
  • pin 34 / gpio 2.00 / mmc 2 cmd / emu 4
    By default however the former has internal pull-down while the latter has internal pull-up. The result is an intermediate voltage level (around 1.2 V iirc), which is generally not appreciated by digital inputs and may negatively affect power consumption and possibly even lifetime.

My suggestion would be to change pin 16 to pull-up in u-boot.


History

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