Migrating console from LPUART1 to LPUART8 in imx93

[Robbi]

Hi team,

                I need to migrate console from lpuart1(default) to lpuart8 in iMX93-11x11EVK  board and test from pins 32&33 in J1001. The change done in below files:

1. Enabled LPUART8 node in u-boot & linux-imx(kernel).
2. Added node in imx93-11x11-evk-uboot.dtsi file.
3. Added lines related to uart8 in imx93_evk.c(const uart_pads)
4. changed default base address in platform_def.h file.

Please guide me any more changes need be done apart from above.

Thanks 

Robbi.

[Manuel_Salas · Accepted solution]

Hello @Robbi 

I hope you are doing very well.

Please try the attached patches.

Then, you should be able to run ATF and U-boot on the LPUART8.

Best regards,

Salas.

[Robbi]

Thanks @Manuel_Salas ,

                               It is working now. And I need solution for the issue as our custom-board is having SD-CARD with slight difference from EVK. we removed GPIO for card detection. So by default DATA3 is used a card detection?.

The modifications done only in u-boot-imx:

&usdhc2 {

pinctrl-names = "default", "state_100mhz", "state_200mhz";

pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>;

pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>;

pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>;

//cd-gpios = <&gpio3 06 GPIO_ACTIVE_LOW>;

vmmc-supply = <&reg_usdhc2_vmmc>;

bus-width = <4>;

broken-cd;

status = "okay";

no-sdio;

no-mmc;

};

Removed cd-gpios by comment & added broken-cd. But after boot SPL was unable to boot from SD. Please go through the log.txt file.

Thanks 

Robbi

[Robbi]

Is this correct approach for SD changes making DAT3 as cd.