What does gpio-output-low/high means?

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
1

Hi NVIDIA team,

I’m following the JetsonModuleAdaptationAndBringUp pinmux section and at the end it generates a gpio.dtsi file. Wanted to know the purpose of this file since I couldn’t find any information about it.
Also, I saw that the gpios are classified as:

  • gpio-input
  • gpio-output-low
  • gpio-output-high

I suppose that this is the state of the pins, but at what time? It’s during Power On Reset (POR state) or it is an Steady state?

Thanks

3

hello OscarPorras,

you may see-also pinmux spreadsheets.
there’re Input/Output/Bidirectional for the pin direction.
output is to expansion header. Input is from expansion header. bidirectional means two directions are shown.
the following high/low is the settings of the initial state.

4

Hi Jerry,

Thanks for the fast response.

Is this initial state the same as the POR state? If not, how is it different?

5

hello OscarPorras,

please check pinmux spreadsheets for default pin configurations, you may alter the settings by software changes.
here’s developer guide, Pinmux Changes.

7

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