diff options
| author | wdenk <wdenk> | 2005-04-04 12:23:03 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2005-04-04 12:23:03 +0000 |
| commit | ba83a3076523be79e85fd07433f8b3f361e6428b (patch) | |
| tree | 0a916f274e8999de8f1c9760e7c836d7486cd17a /cpu | |
| parent | 101e8dfa2a8b045c6655bf2b3d6fba8d378453cd (diff) | |
Patch by Steven Scholz, 04 Apr 2005:
Make sure that MDIO clock does not exceed 2.5 MHz on AT91
Diffstat (limited to 'cpu')
| -rw-r--r-- | cpu/at91rm9200/at91rm9200_ether.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/cpu/at91rm9200/at91rm9200_ether.c b/cpu/at91rm9200/at91rm9200_ether.c index 2ec888f213..0bc1d89ed0 100644 --- a/cpu/at91rm9200/at91rm9200_ether.c +++ b/cpu/at91rm9200/at91rm9200_ether.c @@ -210,6 +210,11 @@ int eth_init (bd_t * bd) p_mac->EMAC_CFG |= AT91C_EMAC_RMII; #endif +#if (AT91C_MASTER_CLOCK > 40000000) + /* MDIO clock must not exceed 2.5 MHz, so enable MCK divider */ + p_mac->EMAC_CFG |= AT91C_EMAC_CLK_HCLK_64; +#endif + p_mac->EMAC_CTL |= AT91C_EMAC_TE | AT91C_EMAC_RE; at91rm92000_GetPhyInterface (& PhyOps); |