成功修改官方uboot，把原厂uboot配置的uart1改为了uart3（COM3口）

Peifeng · 发表于 2020-5-1 13:27:07

成功修改官方uboot，把原厂uboot配置的uart1改为了uart3（COM3口），修改了网卡驱动。原厂uboot的网卡在正点原子的开发板是用不了的。
先发一下uart1---->uart3(COM3):
修改以下这些，就可修改
arch/arm/include/asm/arch-mx6/imx-regs.h
/*
#define CONFIG_MXC_UART_BASE UART1_BASE /*arch/arm/include/asm/arch-mx6/imx-regs.h*/

*/
#define CONFIG_MXC_UART_BASE UART3_BASE

/board/freescal/mx6ullevk.c
/*
static iomux_v3_cfg_t const uart1_pads[] = {
MX6_PAD_UART1_TX_DATA__UART1_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_UART1_RX_DATA__UART1_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
};
*/

static iomux_v3_cfg_t const uart3_pads[] = {
MX6_PAD_UART3_TX_DATA__UART3_DCE_TX | MUX_PAD_CTRL(UART_PAD_CTRL),
MX6_PAD_UART3_RX_DATA__UART3_DCE_RX | MUX_PAD_CTRL(UART_PAD_CTRL),
};

/*
static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
}
*/

static void setup_iomux_uart(void)
{
imx_iomux_v3_setup_multiple_pads(uart3_pads, ARRAY_SIZE(uart3_pads));
}