Can I mix the pins of uart1 and uart3 to use them in the same pinctrl later?

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Can I mix the pins of uart1 and uart3 to use them in the same pinctrl later?

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cesar_miguel
Contributor I

I am working with an imx8mm-lpdrr4-evk board and I want to know if it is possible to do this for example.

pinctrl_uart_mix: uartMgrp {
fsl,pins = <
MX8MM_IOMUXC_UART1_RXD_UART1_DCE_RX 0x140
MX8MM_IOMUXC_UART1_TXD_UART1_DCE_TX 0x140
MX8MM_IOMUXC_ECSPI1_SS0_UART3_DCE_RTS_B 0x140
MX8MM_IOMUXC_ECSPI1_MISO_UART3_DCE_CTS_B 0x140
}

To use these lines later in a driver with flow control of uart1 but using the lines of uart3

Can you tell me if it is possible and why or not and why?

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igorpadykov
NXP TechSupport
NXP TechSupport

Hi CESAR

>use these lines later in a driver with flow control of uart1 but using the lines of uart3

>Can you tell me if it is possible and why or not and why?

I am afraid this is not possible as uart1 and uart3 are separate modules and

working independently from each other.

Best regards
igor
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