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Patch by Steven Scholz, 04 Apr 2005:

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Make sure that MDIO clock does not exceed 2.5 MHz on AT91
This commit is contained in:
wdenk 2005-04-04 12:23:03 +00:00
parent 101e8dfa2a
commit ba83a30765
2 changed files with 8 additions and 0 deletions
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3
CHANGELOG
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@ -2,6 +2,9 @@
Changes for U-Boot 1.1.3: 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 * Fix timer code for ARM systems: make sure that udelay() does not
reset timers so it's save to use udelay() in timeout code. reset timers so it's save to use udelay() in timeout code.

5
cpu/at91rm9200/at91rm9200_ether.c
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@ -210,6 +210,11 @@ int eth_init (bd_t * bd)
p_mac->EMAC_CFG |= AT91C_EMAC_RMII; p_mac->EMAC_CFG |= AT91C_EMAC_RMII;
#endif #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; p_mac->EMAC_CTL |= AT91C_EMAC_TE | AT91C_EMAC_RE;
at91rm92000_GetPhyInterface (& PhyOps); at91rm92000_GetPhyInterface (& PhyOps);