[U-Boot-Users] I can not drive CS8900 on mx1ads by U-boot-1.1.1-imx1

[U-Boot-Users] I can not drive CS8900 on mx1ads by U-boot-1.1.1-imx1

[齐尧]

    I have downloaded u-boot-1.1.1 amd u-boot-1.1.1-imx1.diff,and I have cross-compile them successfully.luckly,the bootloader can init the serial port.then ,I want to enable the CS8900,but failed.
    I used to boot mx1ads by BLOB,and blob can get the ID of cs8900 correctly,so I cpoy these codes in blob to U-boot,but these codes are useless to get the ID of CS8900.The codes are as follows:
    unsigned short  c;

         //set chip select 4 upper control register
        *(volatile P_U32)(0x00220020)  = 0x00000F00;
        //set chip select 4 lower control register
        *(volatile P_U32)(0x00220024)  = 0x80001501;
        //p the GPIO muxing to use Chip Select 4
        *(volatile unsigned int *)(0x0021C020) &= 0xFF3FFFFF;
        *(volatile unsigned int *)(0x0021C038) &= 0xFF3FFFFF;
        //QiYao change the GPIO pin to PortC pin 17
        *((volatile unsigned int * ) 0x0021c220)&=~0x00020000;
        *((volatile unsigned int *)  0x0021c238)&=~0x00020000;

         c = *(volatile unsigned short *)(0x15000300);//The Base address of CS8900
            
        CS8900_PPTR = regno;
        printf("CS8900_PDATA = %x\n",CS8900_PDATA);
        
        I have check the codes for some times ,and i dnot know where the mistake is,so i ask you to help me.

       Qiyao , Beijing Institute of Technology

[U-Boot-Users] I can not drive CS8900 on mx1ads by U-boot-1.1.1-imx1

[齐尧]

Hi
    I have downlodaded the u-boot-1.1.1 and patch for imx1,and i have cross-compiled them successfully!.
    Now ,the u-boot can work well on mx1ads, but the i can not control ethcad cs8900 very well.i can not read the id of cs8900.I have ported the blob to mx1ads ,and i can get the id of cs8900 .now ,i just copy the code in blob to u-boot to get the id of cs8900 ,but i am failed .I do not know why .
    the code related to is as follows :
    //set CS4U 
    *(volatile unsigned long*)(0x00220020)  = 0x00000F00;
    //set CS4L control register
    *(volatile unsigned long*)(0x00220024)  = 0x80001501;

    //set  the GPIO muxing to use Chip Select 4
    *(volatile unsigned long*)(0x0021C020) &= 0xFF3FFFFF;
    *(volatile unsigned long*)(0x0021C038) &= 0xFF3FFFFF;
    //the irq is connect to  GPIO pin to PortC pin 17
    *((volatile unsigned long* ) 0x0021c220)&=~0x00020000;
    *((volatile unsigned long*)  0x0021c238)&=~0x00020000;
    //send the base address of cs8900 on the ADD Bus 
     c = *(volatile unsigned char *)(0x15000300);
     CS8900_PPTR = regno;
     printf("CS8900_PDATA = %x\n",CS8900_PDATA);

the result is always 0x5555 or 0x5575,i do not know why,these codes above can work well in blob.
 I am looking forward your reply,thank ahead!

       Beijing Institute of Technology   Qiyao
       E-mail : qtopia at 126.com
       msn: qiyaobit at hotmail.com