MPC5200B - Mapping Micrel Ethernet Controller Chip

[Sri nava kala devi Valteti, TLS-Chennai]

Hi,

We are using MPC5200B based custom board. In that we have an external
Micrel's ethernet controller mapped at 0xE0000000. 

We have taken Lite5200 code as a reference to port linux to our new
board. We have integrated the ethernet driver given by the vendor
(Micrel). 

Unfortunately, we are not able to access the chip mapped at 0xE0000000.

 

We performed the following steps to access the chip:

i) We mapped this address range of the Ethernet Controller Chip in
function "mpc52xx_map_io" as

"io_block_mapping(0xE0000000, 0xE0000000, 0x10000000, _PAGE_IO)"

 

ii) We tried to remap the address range using ioremap function, but we
got the same address (Virtual Address similar to IO logical Address)
even after the ioremap.

 

Can any one plz help us on how to map and access our chip?   

 

Thanks,

Kala.



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