i.MX ProcessorsのトピックRe: mii commands do not work in u-boot

mii commands do not work in u-boot

VincentChou1z — Tue, 01 May 2012 11:12:39 GMT

Hi!

I tried to use mii commands to access PHY information in u-boot. Unfortunately I could only see a FEC0 from "mii device" and no output from other mii commands like "mii info", "mii read" and "mii dump". Could anyone share his/her experience to make these commands work in u-boot environment? We need to test some PHY information in order to customize our FEC interface.

Vincent

Re: mii commands do not work in u-boot

Sasamy — Fri, 07 Sep 2012 12:52:45 GMT

Hi Vincent,

just add two lines, mii commands do not work because these functions are called without initializing

drivers/net/mxc_fec.c:

static int mxc_fec_mii_read(char *devname, unsigned char addr,
                unsigned char reg, unsigned short *value)
{
   struct eth_device *dev = eth_get_dev_by_name(devname);
   struct fec_info_s *info;
   volatile fec_t *fecp;

if (!dev)
return -1;

    info = dev->priv;
   fecp = (fec_t *) (info->iobase);

   fec_reset(dev);
   mxc_fec_mii_init(fecp);

   return __fec_mii_read(fecp, addr, reg, value);
}

static int mxc_fec_mii_write(char *devname, unsigned char addr,
                 unsigned char reg, unsigned short value)
{
   struct eth_device *dev = eth_get_dev_by_name(devname);
   struct fec_info_s *info;
   volatile fec_t *fecp;

if (!dev)
return -1;

    info = dev->priv;
   fecp = (fec_t *) (info->iobase);

   fec_reset(dev);
   mxc_fec_mii_init(fecp);

   return __fec_mii_write(fecp, addr, reg, value);
}

Re: mii commands do not work in u-boot

MaxChou — Fri, 05 Aug 2016 11:11:05 GMT

Dear Sir.

have any MII command patch for u-boot 2014.4 ?

Thanks