How to map TEGRA234_MAIN_GPIO to 40 pin GPIO

[lykaios1203]

For the GPIO pin on 40 pin, how to map TEGRA234_MAIN_GPIO to them?

We expect to add a
gpio = <&tegra_main_gpio TEGRA234_MAIN_GPIO(?,?) GPIO_ACTIVE_LOW>
in our device’s dtsi

We would like to add of_get_named_gpio in kernel driver to retrieve and control it.

[KevinFFF]

Hi lykaios1203,

Are you using the devkit or custom board for Orin Nano?

@lykaios1203

For the GPIO pin on 40 pin, how to map TEGRA234_MAIN_GPIO to them?

You should check the Jetson Orin Nano Developer Kit Carrier
Board and pinmux spreadsheet.

In the carrier board document:

Let me take PIN32 (GPIO07) as example, you could also find more information about this pin in the same document.

and also find it from pinmux spreadsheet:

You could see that it is PG.06 if you use it as GPIO.
So, you could configure TEGRA234_MAIN_GPIO(G, 6) in your device tree.