Hi3519内核配置uart串口

傷城~ 2022-10-07 10:43 216阅读 0赞

单独编译内核文件：  
1、先进入到内核源码目录下：

cd Hi3519AV100_SDK_V2.0.2.0/osdrv/opensource/kernel/linux-4.9.y

2、拷贝对应的配置文件：

cp arch/arm/configs/hi3519av100_xxxxxx_defconfig .config

可选的配置文件如下，也可自行到arch/arm/configs目录下查看

hi3519av100_amp_defconfig       
    hi3519av100_amp_nand_defconfig  
    hi3519av100_amp_emmc_defconfig  
    hi3519av100_smp_defconfig       
    hi3519av100_smp_nand_defconfig
    hi3519av100_smp_emmc_defconfig

3、编译，进入kernel configuration

make ARCH=arm CROSS_COMPILE=arm-himix200-linux- menuconfig

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzc5MzE4MQ_size_16_color_FFFFFF_t_70]

需选择的配置如下：

Device Drivers  --->
    		Character devices  ---> 
    		 		Serial drivers  ---> 
    		 				 <*> ARM AMBA PL011 serial port support                                                                              
                        	  [*]   Support for console on AMBA serial port

保存修改并退出。

修改hi3519av100.dts文件

vi arch/arm/boot/dts/hi3519av100.dts

加入如下内容：

&uart0 { 
            status = "okay";
    };
    
    &uart1 { 								//自行加入
            status = "okay";				//自行加入
    };										//自行加入
    
    &uart2 { 								//自行加入
            status = "okay";				//自行加入
    };										//自行加入
    
    &uart3 { 								//自行加入
            status = "okay";				//自行加入
    };										//自行加入
    
    &uart4 { 								//自行加入
            status = "okay";				//自行加入
    };										//自行加入

修改hi3519av100.dtsi文件

vi arch/arm/boot/dts/hi3519av100.dtsi

修改如下内容：

aliases { 
            serial0 = &uart0;				
            serial1 = &uart1;				//自行加入 
            serial2 = &uart2;				//自行加入
            serial3 = &uart3;				//自行加入
            serial4 = &uart4;				//自行加入
    
    
     amba { 
        	#address-cells = <1>;
            #size-cells = <1>;
            compatible = "arm,amba-bus";
            ranges;
            
            uart0: uart@04540000 { 
                    compatible = "arm,pl011", "arm,primecell";
                    reg = <0x04540000 0x1000>;
                    interrupts = <0 36 4>;
                    clocks = <&clock HI3519AV100_UART0_CLK>;
                    clock-names = "apb_pclk";
                    status = "okay";		//由disable改为okay 
            };
    
            uart1: uart@04541000 { 
                    compatible = "arm,pl011", "arm,primecell";
                    reg = <0x04541000 0x1000>;
                    interrupts = <0 37 4>;
                    clocks = <&clock HI3519AV100_UART1_CLK>;
                    clock-names = "apb_pclk";
                    dmas = <&hiedmacv310_0 2 2>, <&hiedmacv310_0 3 3>;
                    dma-names = "tx","rx";
                    status = "okay";		//由disable改为okay 
            };
    
            uart2: uart@04542000 { 
                    compatible = "arm,pl011", "arm,primecell";
                    reg = <0x04542000 0x1000>;
                    interrupts = <0 38 4>;
                    clocks = <&clock HI3519AV100_UART2_CLK>;
                    clock-names = "apb_pclk";
                    dmas = <&hiedmacv310_0 4 4>, <&hiedmacv310_0 5 5>;
                    dma-names = "tx","rx";
                    status = "okay";		//由disable改为okay 
            };
    
            uart3: uart@04543000 { 
                    compatible = "arm,pl011", "arm,primecell";
                    reg = <0x04543000 0x1000>;
                    interrupts = <0 39 4>;
                    clocks = <&clock HI3519AV100_UART3_CLK>;
                    clock-names = "apb_pclk";
                    dmas = <&hiedmacv310_0 6 6>, <&hiedmacv310_0 7 7>;
                    dma-names = "tx","rx";
                    status = "okay";		//由disable改为okay 
            };
    
            uart4: uart@04544000 { 
                    compatible = "arm,pl011", "arm,primecell";
                    reg = <0x04544000 0x1000>;
                    interrupts = <0 40 4>;
                    clocks = <&clock HI3519AV100_UART4_CLK>;
                    clock-names = "apb_pclk";
                    dmas = <&hiedmacv310_0 8 8>, <&hiedmacv310_0 9 9>;
                    dma-names = "tx","rx";
                    status = "okay";		//由disable改为okay 
            };

4、编译生成uImage

make ARCH=arm CROSS_COMPILE=arm-himix200-linux- uImage

编译通过后uImage内核文件的路径在 arch/arm/boot/，重新烧录到Hi3519中即可实现串口设备的识别。  
![在这里插入图片描述][20210617154316679.png]  
完结，撒花！

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