How to configure the Jetson 3.0 Tx2 pin multiplexing

I want to configure PIN# A9 GPIO15_AP2MDM_READY as a GPIO , what should I do?
Thanks

hello zhangyongjieaaa33,

please refer to [Tegra Linux Driver Package TX2 Adaptation Guide] for more details.
thanks

hello JerryChang
I looked at the help file downloaded from the official website [Downloads/r27.1/nvl4t_docs/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide/l4t_pinmux.html#wwpID0E0CC0HA], which was configured with GPIO pins, and reused these three files:
Tegra18x-p3310-1000-a03-cvm-config-pinmux.dtsi
Tegra18x-p3310-1000-a03-cvm-config-gpio-default.dtsi
Tegra18x-p3310-1000-a03-cvm-config-padvoltage-default.dtsi

I want to know how to get these three files?

The software version I use is Jetson3.0 Tx2

Thanks

hello zhangyongjieaaa33,

you’re able to found necessary information from [Release 28.1 Development Guide]-> [U-Boot Customization]-> [TX2 Configuring Pinmux GPIO and PAD]