diff options
| -rw-r--r-- | CHANGELOG | 3 | ||||
| -rw-r--r-- | cpu/at91rm9200/at91rm9200_ether.c | 5 |
2 files changed, 8 insertions, 0 deletions
@@ -2,6 +2,9 @@ Changes for U-Boot 1.1.3: ====================================================================== +* Patch by Steven Scholz, 04 Apr 2005: + Make sure that MDIO clock does not exceed 2.5 MHz on AT91 + * Fix timer code for ARM systems: make sure that udelay() does not reset timers so it's save to use udelay() in timeout code. 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); |