topic imx6q change uboot debug uart 1 to uart 2 in i.MX Processors

imx6q change uboot debug uart 1 to uart 2

richarddestiny — Tue, 30 Jun 2015 08:41:10 GMT

Hi，ALL

I want to change imx6q debug uart form uart1 to uart2，and i made the following changes：

board/freescale/mx6qsabresd/mx6qsabresd.c:

iomux_v3_cfg_t const uart4_pads[] = {

MX6_PAD_CSI0_DAT12__UART4_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),

MX6_PAD_CSI0_DAT13__UART4_RXD | 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(uart4_pads, ARRAY_SIZE(uart4_pads));

}

board/freescale/mx6qsabresd/mx6qsabresd.h:

#define CONFIG_MAC_UART_BASE UART4_BASE

#define CONFIG_CONSOLE_DEV "ttymxc3"

but it didn't work, where should I need to change? thanks！

best regards！

Rita_Wang — Tue, 30 Jun 2015 09:12:02 GMT

Hello Richard destiny,

Here I send you a document you can refer to.

Have a nice day.

Best Regards

Dan

richarddestiny — Tue, 30 Jun 2015 10:30:08 GMT

Hi，Dan Wang

thanks for your reply.

the document you send has fix my probem,thank you very mach!

the details：

iomux_v3_cfg_t const uart4_pads[] = {

MX6_PAD_CSI0_DAT12__UART4_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),

MX6_PAD_CSI0_DAT13__UART4_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),

};

change to：

iomux_v3_cfg_t const uart4_pads[] = {

MX6_PAD_KEY_COL0__UART4_TXD | MUX_PAD_CTRL(UART_PAD_CTRL),

MX6_PAD_KEY_ROW0__UART4_RXD | MUX_PAD_CTRL(UART_PAD_CTRL),

};

Best Regards

Richard