海思串口驱动

本帖最后由 ymir 于 2015-7-10 12:57 编辑

四个串口驱动diff文件
[code]diff --git a/arch/arm/mach-hi3520d/core.c b/arch/arm/mach-hi3520d/core.c
index f57a008..46462e1 100644
--- a/arch/arm/mach-hi3520d/core.c
+++ b/arch/arm/mach-hi3520d/core.c
@@ -309,16 +309,21 @@ struct sys_timer hi3520d_timer = {

HIL_AMBA_DEVICE(uart0, "uart:0",  UART0,    NULL);
HIL_AMBA_DEVICE(uart1, "uart:1",  UART1,    NULL);
-
+////dfl uart2 uart3////
+HIL_AMBA_DEVICE(uart2, "uart:2",  UART2,    NULL);
+HIL_AMBA_DEVICE(uart3, "uart:3",  UART3,    NULL);
+///dfl uart2 uart3////
static struct amba_device *amba_devs[] __initdata = {
        &HIL_AMBADEV_NAME(uart0),
        &HIL_AMBADEV_NAME(uart1),
+        &HIL_AMBADEV_NAME(uart2),
+        &HIL_AMBADEV_NAME(uart3),
};


static struct clk uart_clk;
-static struct clk_lookup lookups[2];
-
+//static struct clk_lookup lookups[2];
+static struct clk_lookup lookups[4];//4个串口
static void  uart_clk_init(unsigned long clk)
{
        uart_clk.rate = clk;
@@ -328,6 +333,12 @@ static void  uart_clk_init(unsigned long clk)

        lookups[1].dev_id = "uart:1";
        lookups[1].clk = &uart_clk;
+
+        lookups[2].dev_id = "uart:2";
+        lookups[2].clk = &uart_clk;
+
+        lookups[3].dev_id = "uart:3";
+        lookups[3].clk = &uart_clk;
}

void __init hi3520d_init(void)
@@ -351,6 +362,16 @@ void __init hi3520d_init(void)
                edb_trace();
                amba_device_register(amba_devs, &iomem_resource);
        }
+        //////dfl uart 2 uart3///////
+        // writel(1, IO_ADDRESS(REG_BASE_IO));
+        // writel(0x, IO_ADDRESS(GPIO1_BASE+0x400));
+
+         writel(1, IO_ADDRESS(IOCONFIG_BASE+0x060));//// UART2_TXD
+         writel(1, IO_ADDRESS(IOCONFIG_BASE+0x05c)); //// UART2_RXD
+
+         writel(1, IO_ADDRESS(IOCONFIG_BASE+0x0b8));//// UART3_TXD
+         writel(1, IO_ADDRESS(IOCONFIG_BASE+0x0bc)); //// UART3_RXD
+        //////dfl uart 2 uart3///////
}

MACHINE_START(HI3520D, "hi3520d")
diff --git a/arch/arm/mach-hi3520d/include/mach/irqs.h b/arch/arm/mach-hi3520d/include/mach/irqs.h
index 5f0a484..2610e17 100644
--- a/arch/arm/mach-hi3520d/include/mach/irqs.h
+++ b/arch/arm/mach-hi3520d/include/mach/irqs.h
@@ -8,6 +8,8 @@

#define UART0_IRQ                (HI3520D_IRQ_START + 8)
#define UART1_IRQ                (HI3520D_IRQ_START + 9)
+#define UART2_IRQ                (HI3520D_IRQ_START + 10)
+#define UART3_IRQ                (HI3520D_IRQ_START + 11)

#define INTNR_L2CACHE_CHK0_INT        (HI3520D_IRQ_START + 29)
#define INTNR_L2CACHE_CHK1_INT        (HI3520D_IRQ_START + 30)
[/code]