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                            串口1的設備節點在rk3308.dts中可以找到：
![](https://img.kancloud.cn/c2/c9/c2c95d38f7a35845a7b0d358b881edc2_596x242.png =400x)

### 

其中uart1\_cts和uart1\_rts是硬件流控腳，這只代表引腳有配置為相應的功能腳，并不代表使能硬件流控。使能硬件流控需要從運用層設置下來。需要注意的是，如果使能流控，uart1\_cts和uart1\_rts必須同時配上。如果不需要流控，可以把uart1\_cts和uart1\_rts去掉。

### 

需要使用DMA時需要以下配置，如果沒有需要自己手動添加：

* dma-names = "tx", "rx"; 使能DMA發送和接收
* dma-names = "!tx", "!rx"; 禁止DMA發送和接收

### 

補丁路徑：
![](https://img.kancloud.cn/ad/f0/adf093467c0207f5d03ac1c82acb4743_754x186.png =600x)

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進行補丁：./patchloader.sh       卸載補丁：./patchloader.sh -u
然后進行編譯，燒錄更新kernel。
                    
                
        
                
            
        
                
    
                
    
                
        
                
    
                

                







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