From: 齐尧 <qiyao@bit.edu.cn>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] I can not drive CS8900 on mx1ads by U-boot-1.1.1-imx1
Date: Mon, 20 Sep 2004 13:45:38 +0800 [thread overview]
Message-ID: <295658822.30249@eyou.net> (raw)
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
next reply other threads:[~2004-09-20 5:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-20 5:45 齐尧 [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-09-19 8:35 [U-Boot-Users] I can not drive CS8900 on mx1ads by U-boot-1.1.1-imx1 齐尧
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