iMX8MM EVK GPIOs on EXP_CN (J1003)

[sreedhar_appala]

Hi,

I am working with iMX8MM EVK board. On checking the schematics of the board EXP_CN

UART3_TXD  PAD  ALT5 function is GPIO_27

UART3_RXD PAD ALT5 function is GPIO_26

I believe we can use them GPIOs in iMX8MM EVK system, adding the below pin control mux

pinctrl_gpiopin3: gpiopin3 {
      fsl,pins = <
      MX8MM_IOMUXC_UART3_RXD_GPIO5_IO26 0x14f
      >;
};

pinctrl_gpiopin2: gpiopin2 {
      fsl,pins = <
      MX8MM_IOMUXC_UART3_TXD_GPIO5_IO27 0x19
      >;
};

Please let me is my understanding is correct and anything more to add.

Thank you,

Sreedhar

[igorpadykov]

Hi Sreedhar

yes your understanding is correct.

Best regards
igor
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[sreedhar_appala]

Thank you igor !!

[andre_rc]

Hello, 

I have some questions.

Why 0x19 and 0x14f?

When I change the dtsi file and run bitbake, it will update the image with my new dtsi file?

Regards.