TK1 Serial port in Non DMA mode

Hi All,
Is there any way to configure or modify the default L4T serial port driver to work in NON DMA mode (PIO mode)?
We have device tree entry telling DMA in RX and Tx but it is not used in source code to read and configure PIO mode.

Thanks in Advance

Jeslin

Hello, Jeslin:
You can check the driver @ drivers/tty/serial/serial-tegra.c.
Generally, RX works in DMA mode. TX will work in DMA or PIO mode according to data size to be transferred.

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Chenjian

Hi Chenjian,
Yes, I have gone through the code. But I want both RX and TX to operate in non DMA mode.
Is there any possibility of implementing this in simple way?

Thanks and Regards,
Jeslin

Hello, Jeslin:
For RX, you may have to make PIO mode by yourself.

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Chenjian

Hi Chenjian,
I will try that.

Regards,
Jeslin