diff options
Diffstat (limited to 'drivers/net/mxc_fec.c')
| -rw-r--r-- | drivers/net/mxc_fec.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/mxc_fec.c b/drivers/net/mxc_fec.c index 676f89f..218c432 100644 --- a/drivers/net/mxc_fec.c +++ b/drivers/net/mxc_fec.c @@ -88,6 +88,44 @@ DECLARE_GLOBAL_DATA_PTR; +#ifdef CONFIG_MX25 +/* + * * i.MX25 allows RMII mode to be configured via a gasket + * */ +#define FEC_MIIGSK_CFGR_FRCONT (1 << 6) +#define FEC_MIIGSK_CFGR_LBMODE (1 << 4) +#define FEC_MIIGSK_CFGR_EMODE (1 << 3) +#define FEC_MIIGSK_CFGR_IF_MODE_MASK (3 << 0) +#define FEC_MIIGSK_CFGR_IF_MODE_MII (0 << 0) +#define FEC_MIIGSK_CFGR_IF_MODE_RMII (1 << 0) + +#define FEC_MIIGSK_ENR_READY (1 << 2) +#define FEC_MIIGSK_ENR_EN (1 << 1) + +static inline void fec_localhw_setup(volatile fec_t *fecp) +{ + /* + * Set up the MII gasket for RMII mode + */ + printf("FEC: enable RMII gasket\n"); + + /* disable the gasket and wait */ + fecp->fec_miigsk_enr = 0; + while (fecp->fec_miigsk_enr & FEC_MIIGSK_ENR_READY) + udelay(1); + + /* configure the gasket for RMII, 50 MHz, no loopback, no echo */ + fecp->fec_miigsk_cfgr = FEC_MIIGSK_CFGR_IF_MODE_RMII; + + /* re-enable the gasket */ + fecp->fec_miigsk_enr = FEC_MIIGSK_ENR_EN; +} +#else +static inline void fec_localhw_setup(struct fec_t *fecp) +{ +} +#endif + #if defined(CONFIG_CMD_NET) && defined(CONFIG_NET_MULTI) struct fec_info_s fec_info[] = { @@ -574,6 +612,8 @@ int fec_init(struct eth_device *dev, bd_t *bd) fec_reset(dev); + fec_localhw_setup(fecp); + #if defined (CONFIG_CMD_MII) || defined (CONFIG_MII) || \ defined (CONFIG_DISCOVER_PHY) |