Changing The Boot console

[hrushinale]

HI ,

                          I am  facing the problem related to serial console . The default console given for our board is at UART1 bu I change it to UART 2.For that I made the below changes in U-boot:

#define CONFIG_MXC_UART_BASE    UART2_BASE

#define CONFIG_CONSOLE_DEV        "ttymxc1"

also configured the UART in customboard.c file like

iomux_v3_cfg_t const uart2_pads[] = {

    MX6_PAD_SD3_DAT5__UART2_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),

    MX6_PAD_SD3_DAT4__UART2_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),

    MX6_PAD_SD3_CMD__UART2_RTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),

    MX6_PAD_SD3_CLK__UART2_CTS_B | MUX_PAD_CTRL(UART_PAD_CTRL),

};

static void setup_iomux_uart(void)

{

    imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));

    imx_iomux_v3_setup_multiple_pads(uart2_pads, ARRAY_SIZE(uart2_pads));

}

int board_early_init_f(void)

{

    setup_iomux_uart();

}

After doing all these changes when we connect the board its showing garbage value.. But when kernel is loaded then its showing messages on UART2.Please Suggest the solution.

Regards,

hrushi

[igorpadykov · Accepted solution]

Hi Hrushi

one can debug it using attached Porting Guide

sect.1.4 Debugging, please check uboot/drivers/serial/serial_mxc.c

Best regards

igor

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