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6 )

#ifdef CONFIG_DAVINCI_MMC       /*Set the GPIO direction as output */       clrbits_le32((u32*)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 11));        /*Set the output as high */       val= readl(GPIO_BANK0_REG_SET_ADDR);       val|= (0x01 << 11);       writel(val,GPIO_BANK0_REG_SET_ADDR);#endif

7 )

/* GP0[7] is pwm blacklight for LCD to work on TL BOARD */        /*Set the GPIO direction as output */       clrbits_le32((u32*)GPIO_BANK0_REG_DIR_ADDR, (0x01 << 7));        /*Set the output as low */       val= readl(GPIO_BANK0_REG_SET_ADDR);       val&= ~(0x01 << 7);       writel(val,GPIO_BANK0_REG_SET_ADDR);

8）

davinci_emac_mii_mode_sel(HAS_RMII);->davinci_emac_mii_mode_sel(0)->

选0表示为MII mode.

9 ) Power and Emulation Management

/* enable the console UART */    writel((DAVINCI_UART_PWREMU_MGMT_FREE| DAVINCI_UART_PWREMU_MGMT_URRST|DAVINCI_UART_PWREMU_MGMT_UTRST),&davinci_uart2_ctrl_regs->pwremu_mgmt);;->#define DAVINCI_UART_PWREMU_MGMT_FREE     (1 << 0)#define DAVINCI_UART_PWREMU_MGMT_URRST  (1 << 13)#define DAVINCI_UART_PWREMU_MGMT_UTRST  (1 << 14)13位置1，表示使能接收14位置1，表示使能发射0位置1，表示正常工作

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