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Ethernet: read/write register inside lxt972 with at91rm9200 processor

U-Boot-Users edo01 edo01 1 participant 1 message Jan 24, 2008

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edo01 edo01

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Hi,

I want to change one register inside the LXT971A:
set 0 the parameter PHY_LXT971_DIG_CFG_MII_DRIVE for the register PHY_LXT971_TX_CTRL, this register is define in the file include/lxt971a.h , so I think that I have need to change the file cpu/at91rm9200/lxt972.c . I call the function at91rm9200_EmacWritePhy(p_mac, PHY_LXT971_TX_CTRL, 0) inside the function lxt972_InitPhy but without success, just no ethernet efter my modification. If you have any idea to modify just the parameter PHY_LXT971_DIG_CFG_MII_DRIVE ?
Thanks for your help.

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