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| 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 | |
| parent | 101e8dfa2a8b045c6655bf2b3d6fba8d378453cd (diff) | |
| download | u-boot-imx-ba83a3076523be79e85fd07433f8b3f361e6428b.zip u-boot-imx-ba83a3076523be79e85fd07433f8b3f361e6428b.tar.gz u-boot-imx-ba83a3076523be79e85fd07433f8b3f361e6428b.tar.bz2 | |
Patch by Steven Scholz, 04 Apr 2005:
Make sure that MDIO clock does not exceed 2.5 MHz on AT91
| -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 2ec888f..0bc1d89 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); |