[U-Boot-Users] mii_send error or at least strange

[Ben Warren]

Antonio,

I'm not sure about the 8xx PowerQUICCs, but other Freescale CPUs with
multiple ethernet ports support MII data plane on all ports but only
have one MDIO port (control plane for MII).  Maybe that's why the code
is this way?

regards,
Ben

On Wed, 2006-03-15 at 22:31 +0100, Antonio Di Bacco wrote:

> I had a look to mii_send code in u-boot/cpu/mpc8xx/fec.c . It supports both 
> FEC1 and FEC2 but anyway it seems to write always register mii-data of FEC1, 
> look here: 
>  
> /* send command to phy using mii, wait for result */ 
> static uint  mii_send(uint mii_cmd) 
> { 
> uint mii_reply; 
> volatile fec_t *ep; 
> int cnt; 
>  
> ep = &(((immap_t *)CFG_IMMR)->im_cpm.cp_fec); 
>  
> ep->fec_mii_data = mii_cmd; /* command to phy */ 
>  
> /* wait for mii complete */ 
> cnt = 0; 
> while (!(ep->fec_ievent & FEC_ENET_MII)) { 
> if (++cnt > 1000) { 
> printf("mii_send STUCK!\n"); 
> break; 
> } 
> } 
> mii_reply = ep->fec_mii_data; /* result from phy */ 
> ep->fec_ievent = FEC_ENET_MII; /* clear MII complete */ 
> #if 0 
> printf("%s[%d] %s: sent=0x%8.8x, reply=0x%8.8x\n", 
> __FILE__,__LINE__,__FUNCTION__,mii_cmd,mii_reply); 
> #endif 
> return (mii_reply & 0xffff); /* data read from phy */ 
> } 
> 
> 
> -------------------------------------------------------
> This SF.Net email is sponsored by xPML, a groundbreaking scripting language
> that extends applications into web and mobile media. Attend the live webcast
> and join the prime developer group breaking into this new coding territory!
> http://sel.as-us.falkag.net/sel?cmd=lnk&kid0944&bid$1720&dat1642
> _______________________________________________
> U-Boot-Users mailing list
> U-Boot-Users at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/u-boot-users
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.denx.de/pipermail/u-boot/attachments/20060315/67723504/attachment.htm