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How to enable SPORT as Clock Master in SC-594 ALSA driver



		

			

									
					    swendt
					
							

			
				
									
											
			
			
				
    
			
			
			    	
			                    
                
				                on Jan 11, 2023 
				
			
			
		
    

				
		
    
		    		    
		    
		    		            		        
    Category: Software
    
    		        		            		    
    Product Number:  ADSP-SC594 
    
    		        		    		    	
			
    Hi,
    

    the current ALSA driver for SPORT/I2S4 just support slave mode, so clock and frame sync are generated externally by the audio codec.
    

    How do I enable CBS_CFS mode so the SPORT becomes clock and framesync master ?
    

    

    Regards,
    

    Sebastian
    
								
    

				
				
		
    
			
						
									
									
						
						
			
			
			
			
		
    

        
        

					
    
			
    


    


	















    
	
    
	
    
					



			


				
	









	
      
	

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													+1
							
			
				
									
							        
			
			
			
        
            
			                            
                        
                on Jan 17, 2023 12:46 PM
            
            
					
        
	
        

		
		
        
					
        I have solved it by adding
        

        

            case SND_SOC_DAIFMT_CBS_CFS:
                param.spctl |= (SPORT_CTL_ICLK | SPORT_CTL_IFS);
                param.div =  ((8*sport->wdsize)-1)<<16;
                param.div |= (16-1); //TODO: ADapt to sample rate and sys clkj
                printk("SPORT CLK DIV: %08X\r\n",param.div);
        

        

        to
        

        

        sc5xx_dai_set_dai_fmt
        
			
        

		
		
		
		
	
        
	
        
		
        
			
		
        
	
        
	
        
		
						
				
						
						
				
				
		
		
        
			
		
        
	
        

        

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