TDA2x, How can i use GPIO in Linux Usecase?

Taekmin Lee

Expert 1445 points

Hi,

I'm using TDA2x Custom board with VisionSDK 3.07.

I want using GPIO in Linux usecase.

The GPIO I want to use is GPIO7_27.
so UART2_TXD_MUXMODE set to 0xE in CTRL_CORE_PAD_UART2_TXD.

Q1. Is the register setting impossible on Linux? Segmentation fault occurs on Linux. So, I did it at IPU side.

Q2. Is there an example of GPIO provided by TI?

I found some gpio examples. but it runs on RTOS. so i want linux example.

Best regards,
Lee.

Hi,

We don't have example in Linux.

you can refer GPIO settings in .dts or .dtsi files for Linux.

Thanks

Gaviraju

0 Taekmin Lee over 3 years ago in reply to Gaviraju Doddabettahalli Bettegowda

Expert 1445 points

Hi, Gaviraju.
Thanks for answer.

I want use "GPIO7_27".
I checked dra7.dts, I can't find GPIO7_27 related settings.

Don't I need to set the register if I use GPIO on Linux?

Can you help me a little more?

Best regards,
Lee.

0 Gaviraju Doddabettahalli Bettegowda over 3 years ago in reply to Taekmin Lee

Hi,

You have do changes in the .dts file & by default this GPIO changes will not be there.

Refer the below thread for your reference.

Thanks

Gaviraju

Processors forum