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Question about UART implementation

Question asked by yuichi sato on Apr 26, 2020
Latest reply on May 5, 2020 by Kunal Kotecha

Hi

 

I plan to develop an target board based on the i.MX 8m Mini EVK.
I want to set the UART on the target board as follows:
 UART1 (UART1_RX / UART1_TX / UART1_CTS_B / UART1_RTS_B)
 UART2 (UART2_RX / UART2_TX)
 UART3 (ECSPI1_MISO / ECSPI1_SSO / ECSPI1_SCLK / ECSPI1_MOSI)
 UART4 (UART4_RX / UART4_TX)
I'm not sure how to modify the Linux files.
Do I need to change drivers or DTS files?
Can you please tell me the location of driver and DTS file if you need to change?
Also, I would like to confirm whether each device has the following allocation.
Where should I confirm?
 UART1=/dev/ttyS0
 UART2=/dev/ttyS1
 UART3=/dev/ttyS2
 UART4=/dev/ttyS3

 

Thanks.

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