修改内核源码arch/arm/mach-s3c2440/mach-smdk2440.c
文件的100行,将其改为:
修改drivers/serial/samsung.c
文件的53行添加如下内容:
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| #include <mach/regs-gpio.h>
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然后在397行左右,函数static int s3c24xx_serial_startup(struct uart_port *port)
之前添加
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| extern void s3c2410_gpio_cfgpin(unsigned int pin, unsigned int function); extern void s3c2410_gpio_pullup(unsigned int pin, unsigned int to);
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然后在462行左右添加以下注释说明处的代码:
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| dbg("s3c24xx_serial_startup ok\n"); if (port->line == 2) { s3c2410_gpio_cfgpin(S3C2410_GPIONO(S3C2410_GPIO_BANKH, 6), S3C2410_GPH6_TXD2); s3c2410_gpio_pullup(S3C2410_GPIONO(S3C2410_GPIO_BANKH, 6), 1); s3c2410_gpio_cfgpin(S3C2410_GPIONO(S3C2410_GPIO_BANKH, 7), S3C2410_GPH7_RXD2); s3c2410_gpio_pullup(S3C2410_GPIONO(S3C2410_GPIO_BANKH, 7), 1); } return ret; err: s3c24xx_serial_shutdown(port); return ret;
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下面列出串口配置情况:
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| Device Drivers Character devices Serial drivers <>8250/16550 and compatible serial support ***Non-8250 serial port support*** <*>Samsung SoC serial support [*]Support for console on Samsung SoC serial port <*>Samsung S3C2440/S3C2442 Serial port support
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